Template Class ObservableTNCuda¶
Defined in File ObservablesTNCuda.hpp
Inheritance Relationships¶
Derived Types¶
public Pennylane::LightningTensor::TNCuda::Observables::HamiltonianTNCuda< TensorNetT >(Template Class HamiltonianTNCuda)public Pennylane::LightningTensor::TNCuda::Observables::HermitianObsTNCuda< TensorNetT >(Template Class HermitianObsTNCuda)public Pennylane::LightningTensor::TNCuda::Observables::NamedObsTNCuda< TensorNetT >(Template Class NamedObsTNCuda)public Pennylane::LightningTensor::TNCuda::Observables::TensorProdObsTNCuda< TensorNetT >(Template Class TensorProdObsTNCuda)
Class Documentation¶
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template<class TensorNetT>
class ObservableTNCuda¶ A base class for observable classes of cutensornet backends.
We note that the observable classes for cutensornet backends have the same user interface as the observable classes for the statevector backends across the lightning ecosystem.
- Template Parameters
TensorNetT – tensor network class.
Subclassed by Pennylane::LightningTensor::TNCuda::Observables::HamiltonianTNCuda< TensorNetT >, Pennylane::LightningTensor::TNCuda::Observables::HermitianObsTNCuda< TensorNetT >, Pennylane::LightningTensor::TNCuda::Observables::NamedObsTNCuda< TensorNetT >, Pennylane::LightningTensor::TNCuda::Observables::TensorProdObsTNCuda< TensorNetT >
Public Types
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using PrecisionT = typename TensorNetT::PrecisionT¶
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using ComplexT = typename TensorNetT::ComplexT¶
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using MetaDataT = std::tuple<std::string, std::vector<PrecisionT>, std::vector<ComplexT>>¶
Public Functions
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virtual ~ObservableTNCuda() = default¶
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virtual auto getObsName() const -> std::string = 0¶
Get the name of the observable.
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virtual auto getWires() const -> std::vector<std::size_t> = 0¶
Get the wires the observable applies to.
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inline auto getNumTensors() const -> const vector1D<std::size_t>&¶
Get the number of tensors in each term (For non-Hamiltonian observables, the size of std::vector return is 1).
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inline auto getNumStateModes() const -> const vector2D<std::size_t>&¶
Get the number of state modes of each tensor in each term.
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inline auto getStateModes() const -> const vector3D<std::size_t>&¶
Get the state modes of each tensor in each term.
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inline auto getMetaData() const -> const vector2D<MetaDataT>&¶
Get the meta data of each tensor in each term on host.
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inline auto getCoeffs() const -> const vector1D<PrecisionT>&¶
Get the coefficients of a observable.
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inline auto operator==(const ObservableTNCuda<TensorNetT> &other) const -> bool¶
Test whether this object is equal to another object.
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inline auto operator!=(const ObservableTNCuda<TensorNetT> &other) const -> bool¶
Test whether this object is different from another object.
Protected Functions
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ObservableTNCuda() = default¶
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ObservableTNCuda(const ObservableTNCuda&) = default¶
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ObservableTNCuda(ObservableTNCuda&&) noexcept = default¶
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ObservableTNCuda &operator=(const ObservableTNCuda&) = default¶
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ObservableTNCuda &operator=(ObservableTNCuda&&) noexcept = default¶