47 lines
1.6 KiB
Markdown
47 lines
1.6 KiB
Markdown
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# Qiskit -Nature
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The main cloud application that uses superconducting qubits is qisket. Qisket Nature depends on the main package.
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- [Thermodynamic observable calculations ](https://qiskit.org/documentation/nature/tutorials/06_calculating_thermodynamic_observables.html)with IBM quantum
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### Installation
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```
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pip install qiskit[nature]
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```
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Further instructions can be read [here](https://qiskit.org/documentation/nature/getting_started.html). Installed via xonsh.
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---
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For hydrogen storage notebook --> use the ground state solver docs:
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### 1. Define a molecular system:
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Ask for the electronic part of a hydrogen molecule:
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```
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from qiskit import Aer
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from qiskit_nature.drivers import UnitsType, Molecule
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from qiskit_nature.drivers.second_quantization import (
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ElectronicStructureDriverType,
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ElectronicStructureMoleculeDriver,
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)
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from qiskit_nature.problems.second_quantization import ElectronicStructureProblem
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from qiskit_nature.converters.second_quantization import QubitConverter
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from qiskit_nature.mappers.second_quantization import JordanWignerMapper
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molecule = Molecule(
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geometry=[["H", [0.0, 0.0, 0.0]], ["H", [0.0, 0.0, 0.735]]], charge=0, multiplicity=1
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)
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driver = ElectronicStructureMoleculeDriver(
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molecule, basis="sto3g", driver_type=ElectronicStructureDriverType.PYSCF
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)
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es_problem = ElectronicStructureProblem(driver)
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qubit_converter = QubitConverter(JordanWignerMapper())
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```
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### 2. Define solver:
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A solver aka the algorithm that the ground state is computed with. In chemistry the gound state is found with **variational quantum eignesolver (VQE)**
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### 3.
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