Circuits::MeasurementOperation< Time > Class Template Reference

Measurement operation class. More...

#include <Measurements.h>

Inheritance diagram for Circuits::MeasurementOperation< Time >:

Collaboration diagram for Circuits::MeasurementOperation< Time >:

Public Member Functions
	MeasurementOperation (const std::vector< std::pair< Types::qubit_t, size_t > > &qs={}, Time delay=0)
	Constructor.
std::vector< size_t >	AffectedBits () const override
	Returns the classical bits affected by the measurement.
Types::qubits_vector	AffectedQubits () const override
	Returns the qubits affected by the measurement.
virtual bool	CanAffectQuantumState () const
	Find if the operation can affect the quantum state.
void	Clear ()
	Clears the qubits and classical bits involved in the measurement.
std::shared_ptr< IOperation< Time > >	Clone () const override
	Get a shared pointer to a clone of this object.
void	Execute (const std::shared_ptr< Simulators::ISimulator > &sim, OperationState &state) const override
	Executes the measurement on the given simulator.
const std::vector< size_t > &	GetBitsIndices () const
	Returns the classical bits where the measurement results are stored.
Types::time_type	GetDelay () const
	Get the delay of the operation.
virtual size_t	GetNumQubits () const
	Get the number of qubits affected by the operation.
std::shared_ptr< IOperation< Types::time_type > >	getptr ()
	Get a shared pointer to this object.
const Types::qubits_vector &	GetQubits () const
	Returns the qubits that are to be measured.
OperationType	GetType () const override
	Get the type of the operation.
virtual bool	IsBranching () const
	Checks if the operation is a branching one.
bool	IsClifford () const override
	Checks if the operation is a Clifford one.
virtual bool	IsConditional () const
	Find if the operation is a conditional operation.
virtual bool	NeedsEntanglementForDistribution () const
	Find if the operation needs entanglement for distribution.
std::shared_ptr< IOperation< Time > >	Remap (const std::unordered_map< Types::qubit_t, Types::qubit_t > &qubitsMap, const std::unordered_map< Types::qubit_t, Types::qubit_t > &bitsMap={}) const override
	Get a shared pointer to a remapped operation.
void	Sample (const std::shared_ptr< Simulators::ISimulator > &sim, OperationState &state) const
	Samples the measurement on the given simulator.
void	SetBit (size_t index, Types::qubit_t bit)
	Set the classical bit to index.
void	SetDelay (Types::time_type d)
	Set the delay of the operation.
void	SetQubit (size_t index, Types::qubit_t qubit)
	Set the qubit to measure.
void	SetQubits (const std::vector< std::pair< Types::qubit_t, size_t > > &qs)
	Sets the qubits and classical bits involved in the measurement.
void	SetStateFromSample (const std::vector< bool > &measurements, OperationState &state) const

Detailed Description

template<typename Time = Types::time_type>
class Circuits::MeasurementOperation< Time >

Measurement operation class.

Implementation of an operation that does a qubits measurements on a simulator. The results are stored in a classical 'state'. Each qubit has a corresponding classical 'bit' where the measurement result is stored.

Template Parameters

Time	The time type used for the simulation.

See also

IOperation

Definition at line 37 of file Measurements.h.

Constructor & Destructor Documentation

MeasurementOperation()

template<typename Time = Types::time_type>

Circuits::MeasurementOperation< Time >::MeasurementOperation ( const std::vector< std::pair< Types::qubit_t, size_t > > & qs = {}, Time delay = 0 )

inline

Constructor.

Creates a measurement operation that measures the given qubits and stores the results in the given bits.

Parameters

qs	The qubits to measure and the classical bits where the result is stored, specified as pairs.
delay	The duration of the operation.

See also

IOperation

Definition at line 49 of file Measurements.h.

Member Function Documentation

AffectedBits()

template<typename Time = Types::time_type>

std::vector< size_t > Circuits::MeasurementOperation< Time >::AffectedBits ( ) const

inlineoverridevirtual

Returns the classical bits affected by the measurement.

Returns the classical bits affected by the measurement.

Returns

The classical bits affected by the measurement.

Reimplemented from Circuits::IOperation< Types::time_type >.

Definition at line 193 of file Measurements.h.

References GetBitsIndices().

AffectedQubits()

template<typename Time = Types::time_type>

Types::qubits_vector Circuits::MeasurementOperation< Time >::AffectedQubits ( ) const

inlineoverridevirtual

Returns the qubits affected by the measurement.

Returns the qubits affected by the measurement.

Returns

The qubits affected by the measurement.

Reimplemented from Circuits::IOperation< Types::time_type >.

Definition at line 185 of file Measurements.h.

CanAffectQuantumState()

virtual bool Circuits::IOperation< Types::time_type >::CanAffectQuantumState ( ) const

inlinevirtualinherited

Find if the operation can affect the quantum state.

Returns true if the operation can affect the quantum state, false otherwise.

Returns

True if the operation can affect the quantum state, false otherwise.

Reimplemented in Circuits::Circuit< Time >, and Circuits::Circuit< Types::time_type >.

Definition at line 429 of file Operations.h.

Clear()

template<typename Time = Types::time_type>

void Circuits::MeasurementOperation< Time >::Clear ( )

inline

Clears the qubits and classical bits involved in the measurement.

Clears the qubits and classical bits involved in the measurement.

Definition at line 78 of file Measurements.h.

Clone()

template<typename Time = Types::time_type>

std::shared_ptr< IOperation< Time > > Circuits::MeasurementOperation< Time >::Clone ( ) const

inlineoverridevirtual

Get a shared pointer to a clone of this object.

Returns a shared pointer to a copy of this object.

Returns

A shared pointer to this object.

Implements Circuits::IOperation< Types::time_type >.

Definition at line 170 of file Measurements.h.

References Circuits::IOperation< Time >::GetDelay().

Execute()

template<typename Time = Types::time_type>

void Circuits::MeasurementOperation< Time >::Execute ( const std::shared_ptr< Simulators::ISimulator > & sim, OperationState & state ) const

inlineoverridevirtual

Executes the measurement on the given simulator.

Executes the measurement on the given simulator.

Parameters

sim	The simulator to execute the measurement on.
state	The classical state for the simulator.

See also

ISimulator

OperationState

Implements Circuits::IOperation< Types::time_type >.

Definition at line 126 of file Measurements.h.

References SetStateFromSample().

GetBitsIndices()

template<typename Time = Types::time_type>

const std::vector< size_t > & Circuits::MeasurementOperation< Time >::GetBitsIndices ( ) const

inline

Returns the classical bits where the measurement results are stored.

Returns the classical bits where the measurement results are stored.

Returns

The classical bits where the measurement results are stored.

Definition at line 114 of file Measurements.h.

Referenced by AffectedBits().

GetDelay()

Types::time_type Circuits::IOperation< Types::time_type >::GetDelay ( ) const

inlineinherited

Get the delay of the operation.

Returns the delay due of the execution time of the operation.

Returns

The delay of the operation.

Definition at line 497 of file Operations.h.

Referenced by Circuits::NoOperation< Time >::Clone().

GetNumQubits()

template<typename Time = Types::time_type>

virtual size_t Circuits::MeasurementOperation< Time >::GetNumQubits ( ) const

inlinevirtual

Get the number of qubits affected by the operation.

Returns the number of qubits affected by the operation.

Returns

The number of qubits affected by the operation.

Definition at line 71 of file Measurements.h.

getptr()

std::shared_ptr< IOperation< Types::time_type > > Circuits::IOperation< Types::time_type >::getptr ( )

inlineinherited

Get a shared pointer to this object.

Returns a shared pointer to this object. The object needs to be already wrapped in a shared pointer.

Returns

A shared pointer to this object.

Definition at line 487 of file Operations.h.

GetQubits()

template<typename Time = Types::time_type>

const Types::qubits_vector & Circuits::MeasurementOperation< Time >::GetQubits ( ) const

inline

Returns the qubits that are to be measured.

Returns the qubits that are to be measured.

Returns

The qubits to measure.

Definition at line 106 of file Measurements.h.

GetType()

template<typename Time = Types::time_type>

OperationType Circuits::MeasurementOperation< Time >::GetType ( ) const

inlineoverridevirtual

Get the type of the operation.

Returns the type of the operation, in this case, measurement.

Returns

The type of the operation.

See also

OperationType

Reimplemented from Circuits::IOperation< Types::time_type >.

Definition at line 63 of file Measurements.h.

References Circuits::kMeasurement.

IsBranching()

virtual bool Circuits::IOperation< Types::time_type >::IsBranching ( ) const

inlinevirtualinherited

Checks if the operation is a branching one.

Checks if the operation is a branching one, meaning that it can lead to splitting paths (relevant for the path integral simulator).

Returns

True if it branches a path, false otherwise.

Reimplemented in Circuits::CHGate< Time >, Circuits::Circuit< Time >, Circuits::Circuit< Types::time_type >, Circuits::CRxGate< Time >, Circuits::CRyGate< Time >, Circuits::CSxDagGate< Time >, Circuits::CSxGate< Time >, Circuits::CUGate< Time >, Circuits::HadamardGate< Time >, Circuits::IConditionalOperation< Time >, Circuits::IConditionalOperation< Types::time_type >, Circuits::KGate< Time >, Circuits::RxGate< Time >, Circuits::RyGate< Time >, Circuits::SxDagGate< Time >, Circuits::SxGate< Time >, and Circuits::UGate< Time >.

Definition at line 526 of file Operations.h.

IsClifford()

template<typename Time = Types::time_type>

bool Circuits::MeasurementOperation< Time >::IsClifford ( ) const

inlineoverridevirtual

Checks if the operation is a Clifford one.

Checks if the operation is a Clifford one, allowing to be simulated in a stabilizers simulator.

Returns

True if it can be applied in a stabilizers simulator, false otherwise.

Reimplemented from Circuits::IOperation< Types::time_type >.

Definition at line 241 of file Measurements.h.

IsConditional()

virtual bool Circuits::IOperation< Types::time_type >::IsConditional ( ) const

inlinevirtualinherited

Find if the operation is a conditional operation.

Returns true if the operation is conditional, false otherwise.

Returns

True if the operation is conditional, false otherwise.

Definition at line 458 of file Operations.h.

NeedsEntanglementForDistribution()

virtual bool Circuits::IOperation< Types::time_type >::NeedsEntanglementForDistribution ( ) const

inlinevirtualinherited

Find if the operation needs entanglement for distribution.

Returns true if the operation needs entanglement for distribution, false otherwise.

Returns

True if the operation needs entanglement for distribution, false otherwise.

Reimplemented in Circuits::Circuit< Time >, and Circuits::Circuit< Types::time_type >.

Definition at line 446 of file Operations.h.

Remap()

template<typename Time = Types::time_type>

std::shared_ptr< IOperation< Time > > Circuits::MeasurementOperation< Time >::Remap ( const std::unordered_map< Types::qubit_t, Types::qubit_t > & qubitsMap, const std::unordered_map< Types::qubit_t, Types::qubit_t > & bitsMap = {} ) const

inlineoverridevirtual

Get a shared pointer to a remapped operation.

Returns a shared pointer to a copy of the operation with qubits and classical bits changed according to the provided maps.

Parameters

qubitsMap	The map of qubits to remap.
bitsMap	The map of classical bits to remap.

Returns

A shared pointer to the remapped object.

Implements Circuits::IOperation< Types::time_type >.

Definition at line 205 of file Measurements.h.

Sample()

template<typename Time = Types::time_type>

void Circuits::MeasurementOperation< Time >::Sample ( const std::shared_ptr< Simulators::ISimulator > & sim, OperationState & state ) const

inline

Samples the measurement on the given simulator.

Samples the measurement on the given simulator. Should not apply the measurement.

Parameters

sim	The simulator to sample the measurement on.
state	The classical state for the simulator.

See also

ISimulator

OperationState

Definition at line 146 of file Measurements.h.

References SetStateFromSample().

SetBit()

template<typename Time = Types::time_type>

void Circuits::MeasurementOperation< Time >::SetBit ( size_t index, Types::qubit_t bit )

inline

Set the classical bit to index.

This method sets the classical bit index at the specified index.

Parameters

index	The index of the classical bit index.
bit	The classical bit index to set.

Definition at line 261 of file Measurements.h.

SetDelay()

void Circuits::IOperation< Types::time_type >::SetDelay ( Types::time_type d )

inlineinherited

Set the delay of the operation.

Sets the delay due of the execution time of the operation.

Parameters

d	The delay of the operation.

Definition at line 505 of file Operations.h.

SetQubit()

template<typename Time = Types::time_type>

void Circuits::MeasurementOperation< Time >::SetQubit ( size_t index, Types::qubit_t qubit )

inline

Set the qubit to measure.

This method sets the qubit to measure at the specified index.

Parameters

index	The index of the qubit to measure.
qubit	The qubit to measure.

Definition at line 250 of file Measurements.h.

SetQubits()

template<typename Time = Types::time_type>

void Circuits::MeasurementOperation< Time >::SetQubits ( const std::vector< std::pair< Types::qubit_t, size_t > > & qs )

inline

Sets the qubits and classical bits involved in the measurement.

Sets the qubits and classical bits involved in the measurement, specified as pairs.

Parameters

qs	The qubits to measure and the classical bits where the result is stored, specified as pairs.

Definition at line 91 of file Measurements.h.

SetStateFromSample()

template<typename Time = Types::time_type>

void Circuits::MeasurementOperation< Time >::SetStateFromSample ( const std::vector< bool > & measurements, OperationState & state ) const

inline

Definition at line 155 of file Measurements.h.

References Circuits::OperationState::SetBit().

Referenced by Execute(), and Sample().

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The documentation for this class was generated from the following file:

• Measurements.h