51 lines
1.9 KiB
Plaintext
51 lines
1.9 KiB
Plaintext
---
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title: SciPyRealEvolver
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description: API reference for qiskit.algorithms.SciPyRealEvolver
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in_page_toc_min_heading_level: 1
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python_api_type: class
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python_api_name: qiskit.algorithms.SciPyRealEvolver
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---
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# SciPyRealEvolver
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<Class id="qiskit.algorithms.SciPyRealEvolver" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.24/qiskit/algorithms/time_evolvers/classical_methods/scipy_real_evolver.py" signature="SciPyRealEvolver(num_timesteps)" modifiers="class">
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Bases: [`RealTimeEvolver`](qiskit.algorithms.RealTimeEvolver "qiskit.algorithms.time_evolvers.real_time_evolver.RealTimeEvolver")
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Classical Evolver for real time evolution.
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Evolves an initial state $|\Psi\rangle$ for a time $t$ under a Hamiltonian $H$, as provided in the `evolution_problem`. Note that the precision of the evolver does not depend on the number of timesteps taken.
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**Parameters**
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**num\_timesteps** (*int*) – The number of timesteps in the simulation.
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**Raises**
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**ValueError** – If steps is not a positive integer.
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## Methods
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<span id="qiskit-algorithms-scipyrealevolver-evolve" />
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### evolve
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<Function id="qiskit.algorithms.SciPyRealEvolver.evolve" signature="SciPyRealEvolver.evolve(evolution_problem)">
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Perform real time evolution $\exp(-i t H)|\Psi\rangle$.
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Evolves an initial state $|\Psi\rangle$ for a time $t$ under a Hamiltonian $H$, as provided in the `evolution_problem`.
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**Parameters**
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**evolution\_problem** ([*TimeEvolutionProblem*](qiskit.algorithms.TimeEvolutionProblem "qiskit.algorithms.time_evolvers.time_evolution_problem.TimeEvolutionProblem")) – The definition of the evolution problem.
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**Returns**
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Evolution result which includes an evolved quantum state.
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**Return type**
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[*TimeEvolutionResult*](qiskit.algorithms.TimeEvolutionResult "qiskit.algorithms.time_evolvers.time_evolution_result.TimeEvolutionResult")
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</Function>
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</Class>
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