80 lines
3.1 KiB
Plaintext
80 lines
3.1 KiB
Plaintext
---
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title: TimeEvolutionResult
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description: API reference for qiskit.algorithms.TimeEvolutionResult
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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.TimeEvolutionResult
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---
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# TimeEvolutionResult
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<Class id="qiskit.algorithms.TimeEvolutionResult" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.23/qiskit/algorithms/time_evolvers/time_evolution_result.py" signature="TimeEvolutionResult(evolved_state, aux_ops_evaluated=None, observables=None, times=None)" modifiers="class">
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Bases: `qiskit.algorithms.algorithm_result.AlgorithmResult`
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Class for holding time evolution result.
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### evolved\_state
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<Attribute id="qiskit.algorithms.TimeEvolutionResult.evolved_state">
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An evolved quantum state.
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**Type**
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[QuantumCircuit](qiskit.circuit.QuantumCircuit "qiskit.circuit.QuantumCircuit")|[Statevector](qiskit.quantum_info.Statevector "qiskit.quantum_info.Statevector")
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</Attribute>
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### aux\_ops\_evaluated
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<Attribute id="qiskit.algorithms.TimeEvolutionResult.aux_ops_evaluated">
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Optional list of observables for which expected values on an evolved state are calculated. These values are in fact tuples formatted as (mean, standard deviation).
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**Type**
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ListOrDict\[tuple\[complex, complex]] | None
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</Attribute>
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### observables
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<Attribute id="qiskit.algorithms.TimeEvolutionResult.observables">
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Optional list of observables for which expected on an evolved state are calculated at each timestep. These values are in fact lists of tuples formatted as (mean, standard deviation).
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**Type**
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ListOrDict\[tuple\[np.ndarray, np.ndarray]] | None
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</Attribute>
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### times
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<Attribute id="qiskit.algorithms.TimeEvolutionResult.times">
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Optional list of times at which each observable has been evaluated.
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**Type**
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np.array | None
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</Attribute>
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**Parameters**
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* **evolved\_state** ([*QuantumCircuit*](qiskit.circuit.QuantumCircuit "qiskit.circuit.QuantumCircuit") *|*[*Statevector*](qiskit.quantum_info.Statevector "qiskit.quantum_info.Statevector")) – An evolved quantum state.
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* **aux\_ops\_evaluated** (*ListOrDict\[tuple\[complex, complex]] | None*) – Optional list of observables for which expected values on an evolved state are calculated. These values are in fact tuples formatted as (mean, standard deviation).
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* **observables** (*ListOrDict\[tuple\[np.ndarray, np.ndarray]] | None*) – Optional list of observables for which expected values for each timestep. These values are in fact tuples formatted as (mean array, standard deviation array).
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* **times** (*np.ndarray | None*) – Optional list of times at which each observable has been evaluated.
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## Methods
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### combine
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<Function id="qiskit.algorithms.TimeEvolutionResult.combine" signature="TimeEvolutionResult.combine(result)">
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Any property from the argument that exists in the receiver is updated. :type result: `AlgorithmResult` :param result: Argument result with properties to be set.
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**Raises**
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**TypeError** – Argument is None
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**Return type**
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`None`
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</Function>
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</Class>
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