ImaginaryEvolver

qiskit.algorithms.ImaginaryEvolver

Bases: ABC (opens in a new tab)

Deprecated: Interface for Quantum Imaginary Time Evolution.

The ImaginaryEvolver interface has been superseded by the qiskit.algorithms.time_evolvers.ImaginaryTimeEvolver interface. This interface will be deprecated in a future release and subsequently removed after that.

Deprecated since version 0.24.0

The class qiskit.algorithms.evolvers.imaginary_evolver.ImaginaryEvolver is deprecated as of qiskit 0.24.0. It will be removed no earlier than 3 months after the release date. Instead, use the interface qiskit.algorithms.time_evolvers.ImaginaryTimeEvolver. See https://qisk.it/algo_migration (opens in a new tab) for a migration guide.

Methods

evolve

abstract evolve(evolution_problem)

Perform imaginary time evolution $\exp(-\tau H)|\Psi\rangle$ .

Evolves an initial state $|\Psi\rangle$ for an imaginary time $\tau$ under a Hamiltonian $H$ , as provided in the evolution_problem.

Parameters

evolution_problem (EvolutionProblem) – The definition of the evolution problem.

Returns

Evolution result which includes an evolved quantum state.

Return type

EvolutionResult

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