Robust Encoding of a Qubit in a Molecule

By Victor V. Albert, J. Covey, John Preskill. Physical Review X, 2019

135 citations recorded by the source corpus.

We construct quantum error-correcting codes that embed a finite-dimensional code space in the infinite-dimensional Hilbert state space of rotational states of a rigid body. These codes, which protect against both drift in the body's orientation and small changes in its angular momentum, may be well suited for robust storage and coherent processing of quantum information using rotational states of a polyatomic molecule. Extensions of such codes to rigid bodies with a symmetry axis are compatible with rotational states of diatomic molecules, as well as nuclear states of molecules and atoms. We also describe codes associated with general nonabelian compact Lie groups and develop orthogonality relations for coset spaces, laying the groundwork for quantum information processing with exotic configuration spaces.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/7d73fa9811c7f5ed45ede70a3176e7cd70678dbd

Citations in the corpus

• Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe (2022, unknown): “interest [11], have been identified [82, 367, 469].”