54 std::vector<uint8_t>
r;
58 std::vector<BoolVector>
x;
60 std::vector<BoolVector>
z;
87 int64_t ignored3 = -1,
bool useHardwareRNG =
true,
bool ignored4 =
false,
real1_f ignored5 =
REAL1_EPSILON,
160 std::swap(
x[k],
x[i]);
161 std::swap(
z[k],
z[i]);
162 std::swap(
r[k],
r[i]);
167 std::fill(
x[i].begin(),
x[i].end(),
false);
168 std::fill(
z[i].begin(),
z[i].end(),
false);
183 x[i][j] =
x[i][j] ^
x[k][j];
184 z[i][j] =
z[i][j] ^
z[k][j];
214 const std::vector<bitCapInt>& perms,
bitCapInt offset);
218 const real1_f& nrm,
const std::vector<bitCapInt>& bitPowers,
const std::vector<real1_f>& weights);
239 throw std::domain_error(
"QStabilizer::SetAmplitude() not implemented!");
278 bool ForceM(
bitLenInt t,
bool result,
bool doForce =
true,
bool doApply =
true);
296 std::vector<complex>
GetAmplitudes(std::vector<bitCapInt> perms);
306 const std::vector<bitLenInt>& bits,
const std::vector<bitCapInt>& perms,
bitCapInt offset = 0
U);
344 return Compose(std::dynamic_pointer_cast<QStabilizer>(toCopy), start);
349 DecomposeDispose(start, dest->GetQubitCount(), std::dynamic_pointer_cast<QStabilizer>(dest));
366 throw std::out_of_range(
"QStabilizer::Allocate() cannot start past end of register!");
377 return Compose(nQubits, start);
398 return ApproxCompare(std::dynamic_pointer_cast<QStabilizer>(toCompare), error_tol);
406 return GlobalPhaseCompare(std::dynamic_pointer_cast<QStabilizer>(toCompare), error_tol);
412 (std::arg(thisAmpEntry.
amplitude) - std::arg(toCompare->GetAmplitude(thisAmpEntry.
permutation))) /
414 argDiff -= (
real1)(
size_t)argDiff;
415 if (argDiff > (
ONE_R1 / 2)) {
436 MCPhase(controls, mtrx[0
U], mtrx[3U], target);
441 MCInvert(controls, mtrx[1U], mtrx[2U], target);
445 throw std::domain_error(
"QStabilizer::MCMtrx() not implemented for non-Clifford/Pauli cases!");
450 MACPhase(controls, mtrx[0
U], mtrx[3U], target);
455 MACInvert(controls, mtrx[1U], mtrx[2U], target);
459 throw std::domain_error(
"QStabilizer::MACMtrx() not implemented for non-Clifford/Pauli cases!");
467 if (qubit2 < qubit1) {
468 std::swap(qubit1, qubit2);
A "Qrack::QInterface" is an abstract interface exposing qubit permutation state vector with methods t...
Definition: qinterface.hpp:146
bitCapInt maxQPower
Definition: qinterface.hpp:154
virtual bitLenInt Allocate(bitLenInt length)
Allocate new "length" count of |0> state qubits at end of qubit index position.
Definition: qinterface.hpp:434
std::shared_ptr< RdRandom > hardware_rand_generator
Definition: qinterface.hpp:157
virtual bitLenInt Compose(QInterfacePtr toCopy)
Combine another QInterface with this one, after the last bit index of this one.
Definition: qinterface.hpp:338
qrack_rand_gen_ptr rand_generator
Definition: qinterface.hpp:155
bool randGlobalPhase
Definition: qinterface.hpp:149
virtual void SetQubitCount(bitLenInt qb)
Definition: qinterface.hpp:159
std::uniform_real_distribution< real1_s > rand_distribution
Definition: qinterface.hpp:156
bitLenInt qubitCount
Definition: qinterface.hpp:151
Definition: qstabilizer.hpp:45
bitCapInt PermCount()
Definition: qstabilizer.hpp:234
void seed(const bitLenInt &g)
Finds a Pauli operator P such that the basis state P|0...0> occurs with nonzero amplitude in q,...
Definition: qstabilizer.cpp:240
void S(bitLenInt qubitIndex)
Apply a phase gate (|0>->|0>, |1>->i|1>, or "S") to qubit b.
Definition: qstabilizer.cpp:1170
bool TrySeparate(bitLenInt qubit1, bitLenInt qubit2)
Two-qubit TrySeparate()
Definition: qstabilizer.hpp:465
bool CanDecomposeDispose(const bitLenInt start, const bitLenInt length)
Definition: qstabilizer.cpp:1497
void Decompose(bitLenInt start, QInterfacePtr dest)
Minimally decompose a set of contiguous bits from the separably composed unit, into "destination".
Definition: qstabilizer.hpp:347
real1_f ExpectationFloatsFactorized(const std::vector< bitLenInt > &bits, const std::vector< real1_f > &weights)
Get expectation qubits, interpreting each permutation as a floating-point value.
Definition: qstabilizer.cpp:648
void MCInvert(const std::vector< bitLenInt > &controls, complex topRight, complex bottomLeft, bitLenInt target)
Apply a single bit transformation that reverses bit probability and might effect phase,...
Definition: qstabilizer.cpp:2112
bool GlobalPhaseCompare(QStabilizerPtr toCompare, real1_f error_tol=TRYDECOMPOSE_EPSILON)
Definition: qstabilizer.hpp:408
std::vector< uint8_t > r
Definition: qstabilizer.hpp:54
void CZ(bitLenInt control, bitLenInt target)
Apply a CZ gate with control and target.
Definition: qstabilizer.cpp:882
void ParFor(StabilizerParallelFunc fn, std::vector< bitLenInt > qubits)
Definition: qstabilizer.cpp:58
void setBasisState(const real1_f &nrm, complex *stateVec)
Returns the result of applying the Pauli operator in the "scratch space" of q to |0....
Definition: qstabilizer.cpp:305
real1_f ProbMask(bitCapInt mask, bitCapInt permutation)
Direct measure of masked permutation probability.
Definition: qstabilizer.cpp:730
friend std::ostream & operator<<(std::ostream &os, const QStabilizerPtr s)
Definition: qstabilizer.cpp:2272
void SetQuantumState(const complex *inputState)
Set an arbitrary pure quantum state representation.
Definition: qstabilizer.cpp:1723
void MCPhase(const std::vector< bitLenInt > &controls, complex topLeft, complex bottomRight, bitLenInt target)
Apply a single bit transformation that only effects phase, with arbitrary control bits.
Definition: qstabilizer.cpp:1978
bool TrySeparate(const std::vector< bitLenInt > &qubits, real1_f ignored)
Qrack::QUnit types maintain explicit separation of representations of qubits, which reduces memory us...
Definition: qstabilizer.cpp:2253
void NormalizeState(real1_f nrm=REAL1_DEFAULT_ARG, real1_f norm_thresh=REAL1_DEFAULT_ARG, real1_f phaseArg=ZERO_R1_F)
Apply the normalization factor found by UpdateRunningNorm() or on the fly by a single bit gate.
Definition: qstabilizer.hpp:380
void MACPhase(const std::vector< bitLenInt > &controls, complex topLeft, complex bottomRight, bitLenInt target)
Apply a single bit transformation that only effects phase, with arbitrary (anti-)control bits.
Definition: qstabilizer.cpp:2045
void AntiCY(bitLenInt control, bitLenInt target)
Apply an (anti-)CY gate with control and target.
Definition: qstabilizer.cpp:850
void ISwap(bitLenInt qubitIndex1, bitLenInt qubitIndex2)
Swap values of two bits in register, and apply phase factor of i if bits are different.
Definition: qstabilizer.cpp:969
bool Rand()
Definition: qstabilizer.hpp:116
friend std::istream & operator>>(std::istream &is, const QStabilizerPtr s)
Definition: qstabilizer.cpp:2295
real1_f ProbPermRdm(bitCapInt perm, bitLenInt ancillaeStart)
Under assumption of a QStabilizerHybrid ancillary buffer, trace out the permutation probability of th...
Definition: qstabilizer.cpp:688
QStabilizerPtr CloneEmpty()
void SetDevice(int64_t dID)
Set the device index, if more than one device is available.
Definition: qstabilizer.hpp:114
void SetRandGlobalPhase(bool isRand)
Definition: qstabilizer.hpp:242
void SetPhaseOffset(real1_f phaseArg)
Definition: qstabilizer.hpp:68
unsigned rawRandBoolsRemaining
Definition: qstabilizer.hpp:48
void rowmult(const bitLenInt &i, const bitLenInt &k)
Left-multiply row i by row k - does not change the logical state.
Definition: qstabilizer.hpp:179
unsigned rawRandBools
Definition: qstabilizer.hpp:47
void AntiCNOT(bitLenInt control, bitLenInt target)
Apply an (anti-)CNOT gate with control and target.
Definition: qstabilizer.cpp:790
void UpdateRunningNorm(real1_f norm_thresh=REAL1_DEFAULT_ARG)
Force a calculation of the norm of the state vector, in order to make it unit length before the next ...
Definition: qstabilizer.hpp:387
virtual bitLenInt Compose(QInterfacePtr toCopy)
Combine another QInterface with this one, after the last bit index of this one.
Definition: qinterface.hpp:338
void IS(bitLenInt qubitIndex)
Apply an inverse phase gate (|0>->|0>, |1>->-i|1>, or "S adjoint") to qubit b.
Definition: qstabilizer.cpp:1200
void MCMtrx(const std::vector< bitLenInt > &controls, const complex *mtrx, bitLenInt target)
Apply an arbitrary single bit unitary transformation, with arbitrary control bits.
Definition: qstabilizer.hpp:433
void Y(bitLenInt qubitIndex)
Apply a Pauli Y gate to target.
Definition: qstabilizer.cpp:1124
void rowset(const bitLenInt &i, bitLenInt b)
Sets row i equal to the bth observable (X_1,...X_n,Z_1,...,Z_n)
Definition: qstabilizer.hpp:165
virtual void H(bitLenInt qubit)
Apply a Hadamard gate to target.
Definition: qinterface.hpp:876
bool ForceM(bitLenInt t, bool result, bool doForce=true, bool doApply=true)
Measure qubit t.
Definition: qstabilizer.cpp:1303
bitLenInt gaussian()
Do Gaussian elimination to put the stabilizer generators in the following form: At the top,...
Definition: qstabilizer.cpp:177
bool IsSeparableY(const bitLenInt &target)
Returns "true" if target qubit is a Y basis eigenstate.
Definition: qstabilizer.cpp:1269
AmplitudeEntry GetQubitAmplitude(bitLenInt t, bool m)
Get any single basis state amplitude where qubit "t" has value "m".
Definition: qstabilizer.cpp:573
real1_f Prob(bitLenInt qubit)
Direct measure of bit probability to be in |1> state.
Definition: qstabilizer.cpp:1740
real1_f SumSqrDiff(QInterfacePtr toCompare)
Definition: qstabilizer.hpp:392
bitLenInt Compose(QStabilizerPtr toCopy)
Definition: qstabilizer.hpp:341
std::function< void(void)> DispatchFn
Definition: qstabilizer.hpp:63
void Z(bitLenInt qubitIndex)
Apply a phase gate (|0>->|0>, |1>->-|1>, or "Z") to qubit b.
Definition: qstabilizer.cpp:1145
bitLenInt maxStateMapCacheQubitCount
Definition: qstabilizer.hpp:50
AmplitudeEntry getBasisAmp(const real1_f &nrm)
Helper for setBasisState() and setBasisProb()
Definition: qstabilizer.cpp:271
real1_f ApproxCompareHelper(QStabilizerPtr toCompare, real1_f error_tol=TRYDECOMPOSE_EPSILON, bool isDiscrete=false)
Definition: qstabilizer.cpp:1622
void DecomposeDispose(const bitLenInt start, const bitLenInt length, QStabilizerPtr toCopy)
Definition: qstabilizer.cpp:1549
void SetRandomSeed(uint32_t seed)
Definition: qstabilizer.hpp:107
real1_f ExpectationBitsFactorized(const std::vector< bitLenInt > &bits, const std::vector< bitCapInt > &perms, bitCapInt offset=0U)
Get expectation qubits, interpreting each permutation as an unsigned integer.
Definition: qstabilizer.cpp:609
void Mtrx(const complex *mtrx, bitLenInt target)
Apply an arbitrary single bit unitary transformation.
Definition: qstabilizer.cpp:1750
real1 phaseOffset
Definition: qstabilizer.hpp:49
virtual void X(bitLenInt qubit)
Apply an X (or NOT) gate to target.
Definition: qinterface.hpp:1054
QInterfacePtr Clone()
Clone this QInterface.
Definition: qstabilizer.cpp:74
real1_f getExpectation(const real1_f &nrm, const std::vector< bitCapInt > &bitPowers, const std::vector< bitCapInt > &perms, bitCapInt offset)
Returns the (partial) expectation value from a state vector amplitude.
Definition: qstabilizer.cpp:332
std::vector< bool > BoolVector
Definition: qstabilizer.hpp:56
std::function< void(const bitLenInt &)> StabilizerParallelFunc
Definition: qstabilizer.hpp:62
void SetPermutation(bitCapInt perm, complex phaseFac=CMPLX_DEFAULT_ARG)
Set to a specific permutation of all qubits.
Definition: qstabilizer.cpp:90
bool IsSeparableZ(const bitLenInt &target)
Returns "true" if target qubit is a Z basis eigenstate.
Definition: qstabilizer.cpp:1232
uint8_t IsSeparable(const bitLenInt &target)
Returns: 0 if target qubit is not separable 1 if target qubit is a Z basis eigenstate 2 if target qub...
Definition: qstabilizer.cpp:1285
bool IsSeparableX(const bitLenInt &target)
Returns "true" if target qubit is an X basis eigenstate.
Definition: qstabilizer.cpp:1257
void AntiCZ(bitLenInt control, bitLenInt target)
Apply an (anti-)CZ gate with control and target.
Definition: qstabilizer.cpp:916
bitCapInt GetMaxQPower()
Get the maximum number of basis states, namely for qubits.
Definition: qstabilizer.hpp:100
void Phase(complex topLeft, complex bottomRight, bitLenInt target)
Apply a single bit transformation that only effects phase.
Definition: qstabilizer.cpp:1899
void CNOT(bitLenInt control, bitLenInt target)
Apply a CNOT gate with control and target.
Definition: qstabilizer.cpp:762
std::map< bitCapInt, complex > GetQuantumState()
Convert the state to sparse ket notation.
Definition: qstabilizer.cpp:421
std::vector< BoolVector > x
Definition: qstabilizer.hpp:58
void ResetPhaseOffset()
Definition: qstabilizer.hpp:102
complex GetPhaseOffset()
Definition: qstabilizer.hpp:103
std::vector< complex > GetAmplitudes(std::vector< bitCapInt > perms)
Get a single basis state amplitude.
Definition: qstabilizer.cpp:514
bitLenInt Compose(QInterfacePtr toCopy, bitLenInt start)
Definition: qstabilizer.hpp:342
bool GlobalPhaseCompare(QInterfacePtr toCompare, real1_f error_tol=TRYDECOMPOSE_EPSILON)
Definition: qstabilizer.hpp:404
bool ApproxCompare(QInterfacePtr toCompare, real1_f error_tol=TRYDECOMPOSE_EPSILON)
Compare state vectors approximately, component by component, to determine whether this state vector i...
Definition: qstabilizer.hpp:396
void rowswap(const bitLenInt &i, const bitLenInt &k)
Swaps row i and row k - does not change the logical state.
Definition: qstabilizer.hpp:154
void GetProbs(real1 *outputProbs)
Get all probabilities corresponding to ket notation.
Definition: qstabilizer.cpp:451
bitLenInt Allocate(bitLenInt start, bitLenInt length)
Allocate new "length" count of |0> state qubits at specified qubit index start position.
Definition: qstabilizer.hpp:359
bool isClifford()
Returns "true" if current state is identifiably within the Clifford set, or "false" if it is not or c...
Definition: qstabilizer.hpp:95
void FSim(real1_f theta, real1_f phi, bitLenInt qubit1, bitLenInt qubit2)
The 2-qubit "fSim" gate, (useful in the simulation of particles with fermionic statistics)
Definition: qstabilizer.cpp:2234
void MACInvert(const std::vector< bitLenInt > &controls, complex topRight, complex bottomLeft, bitLenInt target)
Apply a single bit transformation that reverses bit probability and might effect phase,...
Definition: qstabilizer.cpp:2173
void CY(bitLenInt control, bitLenInt target)
Apply a CY gate with control and target.
Definition: qstabilizer.cpp:818
bitLenInt Compose(QInterfacePtr toCopy)
Combine another QInterface with this one, after the last bit index of this one.
Definition: qstabilizer.hpp:340
bool ApproxCompare(QStabilizerPtr toCompare, real1_f error_tol=TRYDECOMPOSE_EPSILON)
Definition: qstabilizer.hpp:400
void IISwap(bitLenInt qubitIndex1, bitLenInt qubitIndex2)
Inverse ISwap - Swap values of two bits in register, and apply phase factor of -i if bits are differe...
Definition: qstabilizer.cpp:1008
bool isUnitarityBroken
Definition: qstabilizer.hpp:51
std::vector< BoolVector > z
Definition: qstabilizer.hpp:60
void MACMtrx(const std::vector< bitLenInt > &controls, const complex *mtrx, bitLenInt target)
Apply an arbitrary single bit unitary transformation, with arbitrary (anti-)control bits.
Definition: qstabilizer.hpp:447
uint8_t clifford(const bitLenInt &i, const bitLenInt &k)
Return the phase (0,1,2,3) when row i is LEFT-multiplied by row k.
Definition: qstabilizer.cpp:132
bitLenInt GetQubitCount()
Get the count of bits in this register.
Definition: qstabilizer.hpp:98
bool TrySeparate(bitLenInt qubit)
Single-qubit TrySeparate()
Definition: qstabilizer.hpp:464
void SetAmplitude(bitCapInt perm, complex amp)
Sets the representational amplitude of a full permutation.
Definition: qstabilizer.hpp:237
void Dispose(bitLenInt start, bitLenInt length, bitCapInt ignored)
Dispose a a contiguous set of qubits that are already in a permutation eigenstate.
Definition: qstabilizer.hpp:353
void Invert(complex topRight, complex bottomLeft, bitLenInt target)
Apply a single bit transformation that reverses bit probability and might effect phase.
Definition: qstabilizer.cpp:1937
AmplitudeEntry GetAnyAmplitude()
Get any single basis state amplitude.
Definition: qstabilizer.cpp:560
void Dispose(bitLenInt start, bitLenInt length)
Minimally decompose a set of contiguous bits from the separably composed unit, and discard the separa...
Definition: qstabilizer.hpp:352
void Swap(bitLenInt qubitIndex1, bitLenInt qubitIndex2)
Swap values of two bits in register.
Definition: qstabilizer.cpp:949
void setBasisProb(const real1_f &nrm, real1 *outputProbs)
Returns the probability from applying the Pauli operator in the "scratch space" of q to |0....
Definition: qstabilizer.cpp:326
void rowcopy(const bitLenInt &i, const bitLenInt &k)
Sets row i equal to row k.
Definition: qstabilizer.hpp:143
QStabilizer(bitLenInt n, bitCapInt perm=0U, qrack_rand_gen_ptr rgp=nullptr, complex phaseFac=CMPLX_DEFAULT_ARG, bool doNorm=false, bool randomGlobalPhase=true, bool ignored2=false, int64_t ignored3=-1, bool useHardwareRNG=true, bool ignored4=false, real1_f ignored5=REAL1_EPSILON, std::vector< int64_t > ignored6={}, bitLenInt ignored7=0U, real1_f ignored8=FP_NORM_EPSILON_F)
Definition: qstabilizer.cpp:39
~QStabilizer()
Definition: qstabilizer.hpp:90
bool isClifford(bitLenInt qubit)
Returns "true" if current qubit state is identifiably within the Clifford set, or "false" if it is no...
Definition: qstabilizer.hpp:96
complex GetAmplitude(bitCapInt perm)
Get a single basis state amplitude.
Definition: qstabilizer.cpp:480
void Dispatch(DispatchFn fn)
Definition: qstabilizer.hpp:64
void Clear()
Definition: qstabilizer.hpp:131
Half-precision floating-point type.
Definition: half.hpp:2222
virtual void H(bitLenInt qubit)
Hadamard gate.
Definition: qinterface.hpp:876
virtual void X(bitLenInt qubit)
X gate.
Definition: qinterface.hpp:1054
virtual void U(bitLenInt target, real1_f theta, real1_f phi, real1_f lambda)
General unitary gate.
Definition: rotational.cpp:18
virtual void Dump()
If asynchronous work is still running, let the simulator know that it can be aborted.
Definition: qinterface.hpp:2588
Definition: complex16x2simd.hpp:25
std::complex< half_float::half > complex
Definition: qrack_types.hpp:62
std::shared_ptr< QInterface > QInterfacePtr
Definition: qinterface.hpp:28
QRACK_CONST real1_f TRYDECOMPOSE_EPSILON
Definition: qrack_types.hpp:244
constexpr real1_f ZERO_R1_F
Definition: qrack_types.hpp:152
constexpr real1_f FP_NORM_EPSILON_F
Definition: qrack_types.hpp:245
const real1 ONE_R1
Definition: qrack_types.hpp:153
half_float::half real1
Definition: qrack_types.hpp:63
QRACK_CONST real1 FP_NORM_EPSILON
Definition: qrack_types.hpp:243
bitCapInt pow2(const bitLenInt &p)
Definition: qrack_functions.hpp:22
const real1 REAL1_DEFAULT_ARG
Definition: qrack_types.hpp:155
const real1 PI_R1
Definition: qrack_types.hpp:158
const real1 ZERO_R1
Definition: qrack_types.hpp:151
float real1_f
Definition: qrack_types.hpp:64
QRACK_CONST complex CMPLX_DEFAULT_ARG
Definition: qrack_types.hpp:242
std::shared_ptr< QStabilizer > QStabilizerPtr
Definition: qstabilizer.hpp:42
const real1 REAL1_EPSILON
Definition: qrack_types.hpp:157
HALF_CONSTEXPR half abs(half arg)
Absolute value.
Definition: half.hpp:2975
#define bitsInByte
Definition: qrack_types.hpp:144
#define bitLenInt
Definition: qrack_types.hpp:44
#define qrack_rand_gen_ptr
Definition: qrack_types.hpp:146
#define bitCapInt
Definition: qrack_types.hpp:105
#define IS_NORM_0(c)
Definition: qrack_types.hpp:27
Definition: qstabilizer.hpp:31
bitCapInt permutation
Definition: qstabilizer.hpp:32
complex amplitude
Definition: qstabilizer.hpp:33
AmplitudeEntry(const bitCapInt &p, const complex &a)
Definition: qstabilizer.hpp:35