CS-VQE Ansatz Builder

Based on the foundational CS-VQE work of https://quantum-journal.org/papers/q-2021-05-14-456/, making use of the original code found at https://github.com/wmkirby1/ContextualSubspaceVQE.

What is included

• All of the original functionality of ContextualSubspaceVQE;
• Qubit tapering funtionality making use of Qiskit Nature;
• Qubit conversion between Qiskit, OpenFermion and AQASM representations;
• Circuit class for constructing and executing CS-VQE Ansatz circuits;
• An implementation of the noncontextual projection Ansatz

How to cite

When you use ContextualSubspaceVQE in a publication or other work, please cite as:

Kirby, William M., Andrew Tranter, and Peter J. Love. "Contextual Subspace Variational Quantum Eigensolver." Quantum 5 (2021): 456., DOI: 10.22331/q-2021-05-14-456.

How to use

Refer to usage.ipynb for an overview of the basic functionality.