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test_operators.cpp
4314 lines (3407 loc) · 187 KB
/
test_operators.cpp
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#include "catch.hpp"
#include "QuEST.h"
#include "utilities.hpp"
/** Prepares the needed data structures for unit testing some operators.
* This creates a statevector and density matrix of the size NUM_QUBITS,
* and corresponding QVector and QMatrix instances for analytic comparison.
*/
#define PREPARE_TEST(quregVec, quregMatr, refVec, refMatr) \
Qureg quregVec = createQureg(NUM_QUBITS, QUEST_ENV); \
Qureg quregMatr = createDensityQureg(NUM_QUBITS, QUEST_ENV); \
initDebugState(quregVec); \
initDebugState(quregMatr); \
QVector refVec = toQVector(quregVec); \
QMatrix refMatr = toQMatrix(quregMatr);
/** Destroys the data structures made by PREPARE_TEST */
#define CLEANUP_TEST(quregVec, quregMatr) \
destroyQureg(quregVec, QUEST_ENV); \
destroyQureg(quregMatr, QUEST_ENV);
/* allows concise use of Contains in catch's REQUIRE_THROWS_WITH */
using Catch::Matchers::Contains;
// largest valid phaseFunc enum, used by input validation tests
enum phaseFunc MAX_INDEX_PHASE_FUNC = SCALED_INVERSE_SHIFTED_WEIGHTED_DISTANCE;
/** @sa applyDiagonalOp
* @ingroup unittest
* @author Tyson Jones
*/
TEST_CASE( "applyDiagonalOp", "[operators]" ) {
PREPARE_TEST( quregVec, quregMatr, refVec, refMatr );
SECTION( "correctness" ) {
// try 10 random operators
GENERATE( range(0,10) );
// make a totally random (non-Hermitian) diagonal oeprator
DiagonalOp op = createDiagonalOp(NUM_QUBITS, QUEST_ENV);
for (long long int i=0; i<op.numElemsPerChunk; i++) {
op.real[i] = getRandomReal(-5, 5);
op.imag[i] = getRandomReal(-5, 5);
}
syncDiagonalOp(op);
SECTION( "state-vector" ) {
QVector ref = toQMatrix(op) * refVec;
applyDiagonalOp(quregVec, op);
REQUIRE( areEqual(quregVec, ref) );
}
SECTION( "density-matrix" ) {
QMatrix ref = toQMatrix(op) * refMatr;
applyDiagonalOp(quregMatr, op);
REQUIRE( areEqual(quregMatr, ref, 100*REAL_EPS) );
}
destroyDiagonalOp(op, QUEST_ENV);
}
SECTION( "input validation" ) {
SECTION( "mismatching size" ) {
DiagonalOp op = createDiagonalOp(NUM_QUBITS + 1, QUEST_ENV);
REQUIRE_THROWS_WITH( applyDiagonalOp(quregVec, op), Contains("equal number of qubits"));
REQUIRE_THROWS_WITH( applyDiagonalOp(quregMatr, op), Contains("equal number of qubits"));
destroyDiagonalOp(op, QUEST_ENV);
}
}
CLEANUP_TEST( quregVec, quregMatr );
}
/** @sa applyFullQFT
* @ingroup unittest
* @author Tyson Jones
*/
TEST_CASE( "applyFullQFT", "[operators]" ) {
PREPARE_TEST( quregVec, quregMatr, refVec, refMatr );
SECTION( "correctness" ) {
// try 10 times for each kind of input
GENERATE( range(0,10) );
SECTION( "state-vector" ) {
SECTION( "normalised" ) {
refVec = getRandomStateVector(NUM_QUBITS);
toQureg(quregVec, refVec);
refVec = getDFT(refVec);
applyFullQFT(quregVec);
REQUIRE( areEqual(quregVec, refVec) );
}
SECTION( "unnormalised" ) {
refVec = getRandomQVector(1 << NUM_QUBITS);
toQureg(quregVec, refVec);
refVec = getDFT(refVec);
applyFullQFT(quregVec);
REQUIRE( areEqual(quregVec, refVec) );
}
}
SECTION( "density-matrix" ) {
SECTION( "pure" ) {
/* a pure density matrix should be mapped to a pure state
* corresponding to the state-vector DFT
*/
refVec = getRandomStateVector(NUM_QUBITS);
refMatr = getPureDensityMatrix(refVec);
toQureg(quregMatr, refMatr);
applyFullQFT(quregMatr);
refVec = getDFT(refVec);
refMatr = getPureDensityMatrix(refVec);
REQUIRE( areEqual(quregMatr, refMatr) );
}
SECTION( "mixed" ) {
/* a mixed density matrix, conceptualised as a mixture of orthogonal
* state-vectors, should be mapped to an equally weighted mixture
* of DFTs of each state-vector (because QFT is unitary and hence
* maintains state orthogonality)
*/
int numStates = (1 << NUM_QUBITS)/4; // quarter as many states as possible
std::vector<QVector> states = getRandomOrthonormalVectors(NUM_QUBITS, numStates);
std::vector<qreal> probs = getRandomProbabilities(numStates);
// set qureg to random mixture
refMatr = getMixedDensityMatrix(probs, states);
toQureg(quregMatr, refMatr);
// apply QFT to mixture
applyFullQFT(quregMatr);
// compute dft of mixture, via dft of each state
refMatr = getZeroMatrix(1 << NUM_QUBITS);
for (int i=0; i<numStates; i++)
refMatr += probs[i] * getPureDensityMatrix(getDFT(states[i]));
REQUIRE( areEqual(quregMatr, refMatr) );
}
SECTION( "unnormalised" ) {
/* repeat method above, except that we use unnormalised vectors,
* and mix them with arbitrary complex numbers instead of probabilities,
* yielding an unnormalised density matrix
*/
int numVecs = (1 << NUM_QUBITS)/4; // quarter as many states as possible
std::vector<QVector> vecs;
std::vector<qcomp> coeffs;
for (int i=0; i<numVecs; i++) {
vecs.push_back(getRandomQVector(1 << NUM_QUBITS));
coeffs.push_back(getRandomComplex());
}
// produce unnormalised matrix
refMatr = getZeroMatrix(1 << NUM_QUBITS);
for (int i=0; i<numVecs; i++)
refMatr += coeffs[i] * getPureDensityMatrix(vecs[i]);
toQureg(quregMatr, refMatr);
applyFullQFT(quregMatr);
// compute target matrix via dft of each unnormalised vector
refMatr = getZeroMatrix(1 << NUM_QUBITS);
for (int i=0; i<numVecs; i++)
refMatr += coeffs[i] * getPureDensityMatrix(getDFT(vecs[i]));
REQUIRE( areEqual(quregMatr, refMatr) );
}
}
}
SECTION( "input validation" ) {
SUCCEED( );
}
CLEANUP_TEST( quregVec, quregMatr );
}
/** @sa applyGateMatrixN
* @ingroup unittest
* @author Tyson Jones
*/
TEST_CASE( "applyGateMatrixN", "[operators]" ) {
PREPARE_TEST( quregVec, quregMatr, refVec, refMatr );
// figure out max-num (inclusive) targs allowed by hardware backend
int maxNumTargs = calcLog2(quregVec.numAmpsPerChunk);
SECTION( "correctness" ) {
// generate all possible qubit arrangements
int numTargs = GENERATE_COPY( range(1,maxNumTargs+1) ); // inclusive upper bound
int* targs = GENERATE_COPY( sublists(range(0,NUM_QUBITS), numTargs) );
// for each qubit arrangement, use a new random unitary
QMatrix op = getRandomQMatrix(1 << numTargs);
ComplexMatrixN matr = createComplexMatrixN(numTargs);
toComplexMatrixN(op, matr);
SECTION( "state-vector" ) {
applyGateMatrixN(quregVec, targs, numTargs, matr);
applyReferenceOp(refVec, targs, numTargs, op);
REQUIRE( areEqual(quregVec, refVec) );
}
SECTION( "density-matrix" ) {
applyGateMatrixN(quregMatr, targs, numTargs, matr);
applyReferenceOp(refMatr, targs, numTargs, op);
REQUIRE( areEqual(quregMatr, refMatr, 1E4*REAL_EPS) );
}
destroyComplexMatrixN(matr);
}
SECTION( "input validation" ) {
SECTION( "number of targets" ) {
// there cannot be more targets than qubits in register
int numTargs = GENERATE( -1, 0, NUM_QUBITS+1 );
int targs[NUM_QUBITS+1]; // prevents seg-fault if validation doesn't trigger
ComplexMatrixN matr = createComplexMatrixN(NUM_QUBITS+1); // prevent seg-fault
REQUIRE_THROWS_WITH( applyGateMatrixN(quregVec, targs, numTargs, matr), Contains("Invalid number of target"));
destroyComplexMatrixN(matr);
}
SECTION( "repetition in targets" ) {
int numTargs = 3;
int targs[] = {1,2,2};
ComplexMatrixN matr = createComplexMatrixN(numTargs); // prevents seg-fault if validation doesn't trigger
REQUIRE_THROWS_WITH( applyGateMatrixN(quregVec, targs, numTargs, matr), Contains("target") && Contains("unique"));
destroyComplexMatrixN(matr);
}
SECTION( "qubit indices" ) {
int numTargs = 3;
int targs[] = {1,2,3};
ComplexMatrixN matr = createComplexMatrixN(numTargs); // prevents seg-fault if validation doesn't trigger
int inv = GENERATE( -1, NUM_QUBITS );
targs[GENERATE_COPY( range(0,numTargs) )] = inv; // make invalid target
REQUIRE_THROWS_WITH( applyGateMatrixN(quregVec, targs, numTargs, matr), Contains("Invalid target") );
destroyComplexMatrixN(matr);
}
SECTION( "matrix creation" ) {
int numTargs = 3;
int targs[] = {1,2,3};
/* compilers don't auto-initialise to NULL; the below circumstance
* only really occurs when 'malloc' returns NULL in createComplexMatrixN,
* which actually triggers its own validation. Hence this test is useless
* currently.
*/
ComplexMatrixN matr;
matr.real = NULL;
matr.imag = NULL;
REQUIRE_THROWS_WITH( applyGateMatrixN(quregVec, targs, numTargs, matr), Contains("created") );
}
SECTION( "matrix dimensions" ) {
int targs[2] = {1,2};
ComplexMatrixN matr = createComplexMatrixN(3); // intentionally wrong size
REQUIRE_THROWS_WITH( applyGateMatrixN(quregVec, targs, 2, matr), Contains("matrix size"));
destroyComplexMatrixN(matr);
}
SECTION( "matrix fits in node" ) {
// pretend we have a very limited distributed memory (judged by matr size)
quregVec.numAmpsPerChunk = 1;
int qb[] = {1,2};
ComplexMatrixN matr = createComplexMatrixN(2); // prevents seg-fault if validation doesn't trigger
REQUIRE_THROWS_WITH( applyGateMatrixN(quregVec, qb, 2, matr), Contains("targets too many qubits"));
destroyComplexMatrixN(matr);
}
}
CLEANUP_TEST( quregVec, quregMatr );
}
/** @sa applyGateSubDiagonalOp
* @ingroup unittest
* @author Tyson Jones
*/
TEST_CASE( "applyGateSubDiagonalOp", "[unitaries]" ) {
PREPARE_TEST( quregVec, quregMatr, refVec, refMatr );
SECTION( "correctness" ) {
// generate all possible targets
int numTargs = GENERATE( range(1,NUM_QUBITS+1) );
int* targs = GENERATE_COPY( sublists(range(0,NUM_QUBITS), numTargs) );
// initialise a random non-unitary diagonal op
SubDiagonalOp op = createSubDiagonalOp(numTargs);
for (long long int i=0; i<op.numElems; i++) {
op.real[i] = getRandomReal(-10,10);
op.imag[i] = getRandomReal(-10,10);
}
QMatrix opMatr = toQMatrix(op);
SECTION( "state-vector" ) {
applyGateSubDiagonalOp(quregVec, targs, numTargs, op);
applyReferenceOp(refVec, targs, numTargs, opMatr);
REQUIRE( areEqual(quregVec, refVec) );
}
SECTION( "density-matrix" ) {
applyGateSubDiagonalOp(quregMatr, targs, numTargs, op);
applyReferenceOp(refMatr, targs, numTargs, opMatr);
REQUIRE( areEqual(quregMatr, refMatr, 1E4*REAL_EPS) );
}
destroySubDiagonalOp(op);
}
SECTION( "input validation" ) {
SECTION( "diagonal dimension" ) {
int numTargs = 3;
SubDiagonalOp op = createSubDiagonalOp(numTargs);
int badNumTargs = GENERATE_COPY( numTargs-1, numTargs+1 );
int badTargs[NUM_QUBITS+1];
REQUIRE_THROWS_WITH( applyGateSubDiagonalOp(quregVec, badTargs, badNumTargs, op), Contains("incompatible dimension") );
destroySubDiagonalOp(op);
}
SECTION( "number of targets" ) {
// make too many targets (which are otherwise valid)
SubDiagonalOp badOp = createSubDiagonalOp(NUM_QUBITS + 1);
int targs[NUM_QUBITS + 1];
for (int t=0; t<badOp.numQubits; t++)
targs[t] = t;
for (int i=0; i<badOp.numElems; i++)
badOp.real[i] = 1;
REQUIRE_THROWS_WITH( applyGateSubDiagonalOp(quregVec, targs, badOp.numQubits, badOp), Contains("Invalid number of target qubits") );
destroySubDiagonalOp(badOp);
}
SECTION( "repetition in targets" ) {
// make a valid unitary diagonal op
SubDiagonalOp op = createSubDiagonalOp(3);
for (int i=0; i<op.numElems; i++)
op.real[i] = 1;
// make a repetition in the target list
int targs[] = {2,1,2};
REQUIRE_THROWS_WITH( applyGateSubDiagonalOp(quregVec, targs, op.numQubits, op), Contains("target qubits must be unique") );
destroySubDiagonalOp(op);
}
SECTION( "qubit indices" ) {
// make a valid unitary diagonal op
SubDiagonalOp op = createSubDiagonalOp(3);
for (int i=0; i<op.numElems; i++)
op.real[i] = 1;
int targs[] = {0,1,2};
// make each target in-turn invalid
int badIndex = GENERATE( range(0,3) );
int badValue = GENERATE( -1, NUM_QUBITS );
targs[badIndex] = badValue;
REQUIRE_THROWS_WITH( applyGateSubDiagonalOp(quregVec, targs, op.numQubits, op), Contains("Invalid target qubit") );
destroySubDiagonalOp(op);
}
}
CLEANUP_TEST( quregVec, quregMatr );
}
/** @sa applyMatrix2
* @ingroup unittest
* @author Tyson Jones
*/
TEST_CASE( "applyMatrix2", "[operators]" ) {
PREPARE_TEST( quregVec, quregMatr, refVec, refMatr );
// every test will use a unique random matrix
QMatrix op = getRandomQMatrix(2); // 2-by-2
ComplexMatrix2 matr = toComplexMatrix2(op);
SECTION( "correctness" ) {
int target = GENERATE( range(0,NUM_QUBITS) );
// reference boilerplate
int* ctrls = NULL;
int numCtrls = 0;
int targs[] = {target};
int numTargs = 1;
SECTION( "state-vector" ) {
applyMatrix2(quregVec, target, matr);
applyReferenceMatrix(refVec, ctrls, numCtrls, targs, numTargs, op);
REQUIRE( areEqual(quregVec, refVec) );
}
SECTION( "density-matrix" ) {
applyMatrix2(quregMatr, target, matr);
applyReferenceMatrix(refMatr, ctrls, numCtrls, targs, numTargs, op);
REQUIRE( areEqual(quregMatr, refMatr, 10*REAL_EPS) );
}
}
SECTION( "input validation" ) {
SECTION( "qubit indices" ) {
int target = GENERATE( -1, NUM_QUBITS );
REQUIRE_THROWS_WITH( applyMatrix2(quregVec, target, matr), Contains("Invalid target") );
}
}
CLEANUP_TEST( quregVec, quregMatr );
}
/** @sa applyMatrix4
* @ingroup unittest
* @author Tyson Jones
*/
TEST_CASE( "applyMatrix4", "[operators]" ) {
PREPARE_TEST( quregVec, quregMatr, refVec, refMatr );
// in distributed mode, each node must be able to fit all amps modified by matrix
REQUIRE( quregVec.numAmpsPerChunk >= 4 );
// every test will use a unique random matrix
QMatrix op = getRandomQMatrix(4); // 4-by-4
ComplexMatrix4 matr = toComplexMatrix4(op);
SECTION( "correctness" ) {
int targ1 = GENERATE( range(0,NUM_QUBITS) );
int targ2 = GENERATE_COPY( filter([=](int t){ return t!=targ1; }, range(0,NUM_QUBITS)) );
// reference boilerplate
int* ctrls = NULL;
int numCtrls = 0;
int targs[] = {targ1, targ2};
int numTargs = 2;
SECTION( "state-vector" ) {
applyMatrix4(quregVec, targ1, targ2, matr);
applyReferenceMatrix(refVec, ctrls, numCtrls, targs, numTargs, op);
REQUIRE( areEqual(quregVec, refVec) );
}
SECTION( "density-matrix" ) {
applyMatrix4(quregMatr, targ1, targ2, matr);
applyReferenceMatrix(refMatr, ctrls, numCtrls, targs, numTargs, op);
REQUIRE( areEqual(quregMatr, refMatr, 10*REAL_EPS) );
}
}
SECTION( "input validation" ) {
SECTION( "qubit indices" ) {
int targ1 = GENERATE( -1, NUM_QUBITS );
int targ2 = 0;
REQUIRE_THROWS_WITH( applyMatrix4(quregVec, targ1, targ2, matr), Contains("Invalid target") );
REQUIRE_THROWS_WITH( applyMatrix4(quregVec, targ2, targ1, matr), Contains("Invalid target") );
}
SECTION( "repetition of targets" ) {
int qb = 0;
REQUIRE_THROWS_WITH( applyMatrix4(quregVec, qb, qb, matr), Contains("target") && Contains("unique") );
}
SECTION( "matrix fits in node" ) {
// pretend we have a very limited distributed memory
quregVec.numAmpsPerChunk = 1;
REQUIRE_THROWS_WITH( applyMatrix4(quregVec, 0, 1, matr), Contains("targets too many qubits"));
}
}
CLEANUP_TEST( quregVec, quregMatr );
}
/** @sa applyMatrixN
* @ingroup unittest
* @author Tyson Jones
*/
TEST_CASE( "applyMatrixN", "[operators]" ) {
PREPARE_TEST( quregVec, quregMatr, refVec, refMatr );
// figure out max-num (inclusive) targs allowed by hardware backend
int maxNumTargs = calcLog2(quregVec.numAmpsPerChunk);
SECTION( "correctness" ) {
// generate all possible qubit arrangements
int numTargs = GENERATE_COPY( range(1,maxNumTargs+1) ); // inclusive upper bound
int* targs = GENERATE_COPY( sublists(range(0,NUM_QUBITS), numTargs) );
// for each qubit arrangement, use a new random matrix
QMatrix op = getRandomQMatrix(1 << numTargs);
ComplexMatrixN matr = createComplexMatrixN(numTargs);
toComplexMatrixN(op, matr);
// reference boilerplate
int* ctrls = NULL;
int numCtrls = 0;
SECTION( "state-vector" ) {
applyMatrixN(quregVec, targs, numTargs, matr);
applyReferenceMatrix(refVec, ctrls, numCtrls, targs, numTargs, op);
REQUIRE( areEqual(quregVec, refVec) );
}
SECTION( "density-matrix" ) {
applyMatrixN(quregMatr, targs, numTargs, matr);
applyReferenceMatrix(refMatr, ctrls, numCtrls, targs, numTargs, op);
REQUIRE( areEqual(quregMatr, refMatr, 100*REAL_EPS) );
}
destroyComplexMatrixN(matr);
}
SECTION( "input validation" ) {
SECTION( "number of targets" ) {
// there cannot be more targets than qubits in register
int numTargs = GENERATE( -1, 0, NUM_QUBITS+1 );
int targs[NUM_QUBITS+1]; // prevents seg-fault if validation doesn't trigger
ComplexMatrixN matr = createComplexMatrixN(NUM_QUBITS+1); // prevent seg-fault
REQUIRE_THROWS_WITH( applyMatrixN(quregVec, targs, numTargs, matr), Contains("Invalid number of target"));
destroyComplexMatrixN(matr);
}
SECTION( "repetition in targets" ) {
int numTargs = 3;
int targs[] = {1,2,2};
ComplexMatrixN matr = createComplexMatrixN(numTargs); // prevents seg-fault if validation doesn't trigger
REQUIRE_THROWS_WITH( applyMatrixN(quregVec, targs, numTargs, matr), Contains("target") && Contains("unique"));
destroyComplexMatrixN(matr);
}
SECTION( "qubit indices" ) {
int numTargs = 3;
int targs[] = {1,2,3};
ComplexMatrixN matr = createComplexMatrixN(numTargs); // prevents seg-fault if validation doesn't trigger
int inv = GENERATE( -1, NUM_QUBITS );
targs[GENERATE_COPY( range(0,numTargs) )] = inv; // make invalid target
REQUIRE_THROWS_WITH( applyMatrixN(quregVec, targs, numTargs, matr), Contains("Invalid target") );
destroyComplexMatrixN(matr);
}
SECTION( "matrix creation" ) {
int numTargs = 3;
int targs[] = {1,2,3};
/* compilers don't auto-initialise to NULL; the below circumstance
* only really occurs when 'malloc' returns NULL in createComplexMatrixN,
* which actually triggers its own validation. Hence this test is useless
* currently.
*/
ComplexMatrixN matr;
matr.real = NULL;
matr.imag = NULL;
REQUIRE_THROWS_WITH( applyMatrixN(quregVec, targs, numTargs, matr), Contains("created") );
}
SECTION( "matrix dimensions" ) {
int targs[2] = {1,2};
ComplexMatrixN matr = createComplexMatrixN(3); // intentionally wrong size
REQUIRE_THROWS_WITH( applyMatrixN(quregVec, targs, 2, matr), Contains("matrix size"));
destroyComplexMatrixN(matr);
}
SECTION( "matrix fits in node" ) {
// pretend we have a very limited distributed memory (judged by matr size)
quregVec.numAmpsPerChunk = 1;
int qb[] = {1,2};
ComplexMatrixN matr = createComplexMatrixN(2); // prevents seg-fault if validation doesn't trigger
REQUIRE_THROWS_WITH( applyMatrixN(quregVec, qb, 2, matr), Contains("targets too many qubits"));
destroyComplexMatrixN(matr);
}
}
CLEANUP_TEST( quregVec, quregMatr );
}
/** @sa applyMultiControlledGateMatrixN
* @ingroup unittest
* @author Tyson Jones
*/
TEST_CASE( "applyMultiControlledGateMatrixN", "[operators]" ) {
PREPARE_TEST( quregVec, quregMatr, refVec, refMatr );
// figure out max-num targs (inclusive) allowed by hardware backend
int maxNumTargs = calcLog2(quregVec.numAmpsPerChunk);
if (maxNumTargs >= NUM_QUBITS)
maxNumTargs = NUM_QUBITS - 1; // leave room for min-number of control qubits
SECTION( "correctness" ) {
// try all possible numbers of targets and controls
int numTargs = GENERATE_COPY( range(1,maxNumTargs+1) );
int maxNumCtrls = NUM_QUBITS - numTargs;
int numCtrls = GENERATE_COPY( range(1,maxNumCtrls+1) );
// generate all possible valid qubit arrangements
int* targs = GENERATE_COPY( sublists(range(0,NUM_QUBITS), numTargs) );
int* ctrls = GENERATE_COPY( sublists(range(0,NUM_QUBITS), numCtrls, targs, numTargs) );
// for each qubit arrangement, use a new random unitary
QMatrix op = getRandomQMatrix(1 << numTargs);
ComplexMatrixN matr = createComplexMatrixN(numTargs);
toComplexMatrixN(op, matr);
SECTION( "state-vector" ) {
applyMultiControlledGateMatrixN(quregVec, ctrls, numCtrls, targs, numTargs, matr);
applyReferenceOp(refVec, ctrls, numCtrls, targs, numTargs, op);
REQUIRE( areEqual(quregVec, refVec) );
}
SECTION( "density-matrix" ) {
applyMultiControlledGateMatrixN(quregMatr, ctrls, numCtrls, targs, numTargs, matr);
applyReferenceOp(refMatr, ctrls, numCtrls, targs, numTargs, op);
REQUIRE( areEqual(quregMatr, refMatr, 1E4*REAL_EPS) );
}
destroyComplexMatrixN(matr);
}
SECTION( "input validation" ) {
SECTION( "number of targets" ) {
// there cannot be more targets than qubits in register
// (numTargs=NUM_QUBITS is caught elsewhere, because that implies ctrls are invalid)
int numTargs = GENERATE( -1, 0, NUM_QUBITS+1 );
int targs[NUM_QUBITS+1]; // prevents seg-fault if validation doesn't trigger
int ctrls[] = {0};
ComplexMatrixN matr = createComplexMatrixN(NUM_QUBITS+1); // prevent seg-fault
toComplexMatrixN(getRandomUnitary(NUM_QUBITS+1), matr); // ensure unitary
REQUIRE_THROWS_WITH( applyMultiControlledGateMatrixN(quregVec, ctrls, 1, targs, numTargs, matr), Contains("Invalid number of target"));
destroyComplexMatrixN(matr);
}
SECTION( "repetition in targets" ) {
int ctrls[] = {0};
int numTargs = 3;
int targs[] = {1,2,2};
ComplexMatrixN matr = createComplexMatrixN(numTargs); // prevents seg-fault if validation doesn't trigger
toComplexMatrixN(getRandomUnitary(numTargs), matr); // ensure unitary
REQUIRE_THROWS_WITH( applyMultiControlledGateMatrixN(quregVec, ctrls, 1, targs, numTargs, matr), Contains("target") && Contains("unique"));
destroyComplexMatrixN(matr);
}
SECTION( "number of controls" ) {
int numCtrls = GENERATE( -1, 0, NUM_QUBITS, NUM_QUBITS+1 );
int ctrls[NUM_QUBITS+1]; // avoids seg-fault if validation not triggered
int targs[1] = {0};
ComplexMatrixN matr = createComplexMatrixN(1);
toComplexMatrixN(getRandomUnitary(1), matr); // ensure unitary
REQUIRE_THROWS_WITH( applyMultiControlledGateMatrixN(quregVec, ctrls, numCtrls, targs, 1, matr), Contains("Invalid number of control"));
destroyComplexMatrixN(matr);
}
SECTION( "repetition in controls" ) {
int ctrls[] = {0,1,1};
int targs[] = {3};
ComplexMatrixN matr = createComplexMatrixN(1);
toComplexMatrixN(getRandomUnitary(1), matr); // ensure unitary
REQUIRE_THROWS_WITH( applyMultiControlledGateMatrixN(quregVec, ctrls, 3, targs, 1, matr), Contains("control") && Contains("unique"));
destroyComplexMatrixN(matr);
}
SECTION( "control and target collision" ) {
int ctrls[] = {0,1,2};
int targs[] = {3,1,4};
ComplexMatrixN matr = createComplexMatrixN(3);
toComplexMatrixN(getRandomUnitary(3), matr); // ensure unitary
REQUIRE_THROWS_WITH( applyMultiControlledGateMatrixN(quregVec, ctrls, 3, targs, 3, matr), Contains("Control") && Contains("target") && Contains("disjoint"));
destroyComplexMatrixN(matr);
}
SECTION( "qubit indices" ) {
// valid inds
int numQb = 2;
int qb1[2] = {0,1};
int qb2[2] = {2,3};
ComplexMatrixN matr = createComplexMatrixN(numQb);
toComplexMatrixN(getRandomUnitary(numQb), matr); // ensure unitary
// make qb1 invalid
int inv = GENERATE( -1, NUM_QUBITS );
qb1[GENERATE_COPY(range(0,numQb))] = inv;
REQUIRE_THROWS_WITH( applyMultiControlledGateMatrixN(quregVec, qb1, numQb, qb2, numQb, matr), Contains("Invalid control") );
REQUIRE_THROWS_WITH( applyMultiControlledGateMatrixN(quregVec, qb2, numQb, qb1, numQb, matr), Contains("Invalid target") );
destroyComplexMatrixN(matr);
}
SECTION( "matrix creation" ) {
int ctrls[1] = {0};
int targs[3] = {1,2,3};
/* compilers don't auto-initialise to NULL; the below circumstance
* only really occurs when 'malloc' returns NULL in createComplexMatrixN,
* which actually triggers its own validation. Hence this test is useless
* currently.
*/
ComplexMatrixN matr;
matr.real = NULL;
matr.imag = NULL;
REQUIRE_THROWS_WITH( applyMultiControlledGateMatrixN(quregVec, ctrls, 1, targs, 3, matr), Contains("created") );
}
SECTION( "matrix dimensions" ) {
int ctrls[1] = {0};
int targs[2] = {1,2};
ComplexMatrixN matr = createComplexMatrixN(3); // intentionally wrong size
toComplexMatrixN(getRandomUnitary(3), matr); // ensure unitary
REQUIRE_THROWS_WITH( applyMultiControlledGateMatrixN(quregVec, ctrls, 1, targs, 2, matr), Contains("matrix size"));
destroyComplexMatrixN(matr);
}
SECTION( "matrix fits in node" ) {
// pretend we have a very limited distributed memory (judged by matr size)
quregVec.numAmpsPerChunk = 1;
int ctrls[1] = {0};
int targs[2] = {1,2};
ComplexMatrixN matr = createComplexMatrixN(2);
toComplexMatrixN(getRandomUnitary(2), matr); // ensure unitary
REQUIRE_THROWS_WITH( applyMultiControlledGateMatrixN(quregVec, ctrls, 1, targs, 2, matr), Contains("targets too many qubits"));
destroyComplexMatrixN(matr);
}
}
CLEANUP_TEST( quregVec, quregMatr );
}
/** @sa applyMultiControlledMatrixN
* @ingroup unittest
* @author Tyson Jones
*/
TEST_CASE( "applyMultiControlledMatrixN", "[operators]" ) {
PREPARE_TEST( quregVec, quregMatr, refVec, refMatr );
// figure out max-num targs (inclusive) allowed by hardware backend
int maxNumTargs = calcLog2(quregVec.numAmpsPerChunk);
if (maxNumTargs >= NUM_QUBITS)
maxNumTargs = NUM_QUBITS - 1; // leave room for min-number of control qubits
SECTION( "correctness" ) {
// try all possible numbers of targets and controls
int numTargs = GENERATE_COPY( range(1,maxNumTargs+1) );
int maxNumCtrls = NUM_QUBITS - numTargs;
int numCtrls = GENERATE_COPY( range(1,maxNumCtrls+1) );
// generate all possible valid qubit arrangements
int* targs = GENERATE_COPY( sublists(range(0,NUM_QUBITS), numTargs) );
int* ctrls = GENERATE_COPY( sublists(range(0,NUM_QUBITS), numCtrls, targs, numTargs) );
// for each qubit arrangement, use a new random unitary
QMatrix op = getRandomQMatrix(1 << numTargs);
ComplexMatrixN matr = createComplexMatrixN(numTargs);
toComplexMatrixN(op, matr);
SECTION( "state-vector" ) {
applyMultiControlledMatrixN(quregVec, ctrls, numCtrls, targs, numTargs, matr);
applyReferenceMatrix(refVec, ctrls, numCtrls, targs, numTargs, op);
REQUIRE( areEqual(quregVec, refVec) );
}
SECTION( "density-matrix" ) {
applyMultiControlledMatrixN(quregMatr, ctrls, numCtrls, targs, numTargs, matr);
applyReferenceMatrix(refMatr, ctrls, numCtrls, targs, numTargs, op);
REQUIRE( areEqual(quregMatr, refMatr, 100*REAL_EPS) );
}
destroyComplexMatrixN(matr);
}
SECTION( "input validation" ) {
SECTION( "number of targets" ) {
// there cannot be more targets than qubits in register
// (numTargs=NUM_QUBITS is caught elsewhere, because that implies ctrls are invalid)
int numTargs = GENERATE( -1, 0, NUM_QUBITS+1 );
int targs[NUM_QUBITS+1]; // prevents seg-fault if validation doesn't trigger
int ctrls[] = {0};
ComplexMatrixN matr = createComplexMatrixN(NUM_QUBITS+1); // prevent seg-fault
toComplexMatrixN(getRandomQMatrix( 1 << (NUM_QUBITS+1)), matr);
REQUIRE_THROWS_WITH( applyMultiControlledMatrixN(quregVec, ctrls, 1, targs, numTargs, matr), Contains("Invalid number of target"));
destroyComplexMatrixN(matr);
}
SECTION( "repetition in targets" ) {
int ctrls[] = {0};
int numTargs = 3;
int targs[] = {1,2,2};
ComplexMatrixN matr = createComplexMatrixN(numTargs); // prevents seg-fault if validation doesn't trigger
toComplexMatrixN(getRandomQMatrix(1 << numTargs), matr);
REQUIRE_THROWS_WITH( applyMultiControlledMatrixN(quregVec, ctrls, 1, targs, numTargs, matr), Contains("target") && Contains("unique"));
destroyComplexMatrixN(matr);
}
SECTION( "number of controls" ) {
int numCtrls = GENERATE( -1, 0, NUM_QUBITS, NUM_QUBITS+1 );
int ctrls[NUM_QUBITS+1]; // avoids seg-fault if validation not triggered
int targs[1] = {0};
ComplexMatrixN matr = createComplexMatrixN(1);
toComplexMatrixN(getRandomQMatrix(1 << 1), matr);
REQUIRE_THROWS_WITH( applyMultiControlledMatrixN(quregVec, ctrls, numCtrls, targs, 1, matr), Contains("Invalid number of control"));
destroyComplexMatrixN(matr);
}
SECTION( "repetition in controls" ) {
int ctrls[] = {0,1,1};
int targs[] = {3};
ComplexMatrixN matr = createComplexMatrixN(1);
toComplexMatrixN(getRandomQMatrix(1 << 1), matr);
REQUIRE_THROWS_WITH( applyMultiControlledMatrixN(quregVec, ctrls, 3, targs, 1, matr), Contains("control") && Contains("unique"));
destroyComplexMatrixN(matr);
}
SECTION( "control and target collision" ) {
int ctrls[] = {0,1,2};
int targs[] = {3,1,4};
ComplexMatrixN matr = createComplexMatrixN(3);
toComplexMatrixN(getRandomQMatrix(1 << 3), matr);
REQUIRE_THROWS_WITH( applyMultiControlledMatrixN(quregVec, ctrls, 3, targs, 3, matr), Contains("Control") && Contains("target") && Contains("disjoint"));
destroyComplexMatrixN(matr);
}
SECTION( "qubit indices" ) {
// valid inds
int numQb = 2;
int qb1[2] = {0,1};
int qb2[2] = {2,3};
ComplexMatrixN matr = createComplexMatrixN(numQb);
toComplexMatrixN(getRandomQMatrix(1 << numQb), matr);
// make qb1 invalid
int inv = GENERATE( -1, NUM_QUBITS );
qb1[GENERATE_COPY(range(0,numQb))] = inv;
REQUIRE_THROWS_WITH( applyMultiControlledMatrixN(quregVec, qb1, numQb, qb2, numQb, matr), Contains("Invalid control") );
REQUIRE_THROWS_WITH( applyMultiControlledMatrixN(quregVec, qb2, numQb, qb1, numQb, matr), Contains("Invalid target") );
destroyComplexMatrixN(matr);
}
SECTION( "matrix creation" ) {
int ctrls[1] = {0};
int targs[3] = {1,2,3};
/* compilers don't auto-initialise to NULL; the below circumstance
* only really occurs when 'malloc' returns NULL in createComplexMatrixN,
* which actually triggers its own validation. Hence this test is useless
* currently.
*/
ComplexMatrixN matr;
matr.real = NULL;
matr.imag = NULL;
REQUIRE_THROWS_WITH( applyMultiControlledMatrixN(quregVec, ctrls, 1, targs, 3, matr), Contains("created") );
}
SECTION( "matrix dimensions" ) {
int ctrls[1] = {0};
int targs[2] = {1,2};
ComplexMatrixN matr = createComplexMatrixN(3); // intentionally wrong size
toComplexMatrixN(getRandomQMatrix(1 << 3), matr);
REQUIRE_THROWS_WITH( applyMultiControlledMatrixN(quregVec, ctrls, 1, targs, 2, matr), Contains("matrix size"));
destroyComplexMatrixN(matr);
}
SECTION( "matrix fits in node" ) {
// pretend we have a very limited distributed memory (judged by matr size)
quregVec.numAmpsPerChunk = 1;
int ctrls[1] = {0};
int targs[2] = {1,2};
ComplexMatrixN matr = createComplexMatrixN(2);
toComplexMatrixN(getRandomQMatrix(1 << 2), matr);
REQUIRE_THROWS_WITH( applyMultiControlledMatrixN(quregVec, ctrls, 1, targs, 2, matr), Contains("targets too many qubits"));
destroyComplexMatrixN(matr);
}
}
CLEANUP_TEST( quregVec, quregMatr );
}
/** @sa applyMultiVarPhaseFunc
* @ingroup unittest
* @author Tyson Jones
*/
TEST_CASE( "applyMultiVarPhaseFunc", "[operators]" ) {
PREPARE_TEST( quregVec, quregMatr, refVec, refMatr );
SECTION( "correctness" ) {
// try every kind of binary encodings
enum bitEncoding encoding = GENERATE( UNSIGNED,TWOS_COMPLEMENT );
// try every possible number of registers
// (between #qubits containing 1, and 1 containing #qubits)
int numRegs;
int maxNumRegs = 0;
if (encoding == UNSIGNED)
maxNumRegs = NUM_QUBITS;
if (encoding == TWOS_COMPLEMENT)
maxNumRegs = NUM_QUBITS/2; // floors
numRegs = GENERATE_COPY( range(1, maxNumRegs+1) );
// try every possible total number of involed qubits
int totalNumQubits;
int minTotalQubits = 0;
if (encoding == UNSIGNED)
// each register must contain at least 1 qubit
minTotalQubits = numRegs;
if (encoding == TWOS_COMPLEMENT)
// each register must contain at least 2 qubits
minTotalQubits = 2*numRegs;
totalNumQubits = GENERATE_COPY( range(minTotalQubits,NUM_QUBITS+1) );
// try every qubits subset and ordering
int* regs = GENERATE_COPY( sublists(range(0,NUM_QUBITS), totalNumQubits) );
// assign each sub-reg its minimum length
int unallocQubits = totalNumQubits;
VLA(int, numQubitsPerReg, numRegs);
for (int i=0; i<numRegs; i++)
if (encoding == UNSIGNED) {
numQubitsPerReg[i] = 1;
unallocQubits -= 1;
}