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Entangling gates using Josephson circuits coupled through non-classical microwaves.

By R. Migliore, Anastasia Konstadopoulou, Apostolos Vourdas, T.P. Spiller and A. Messina

Abstract

NoA system consisting of two Josephson qubits coupled through a quantum monochromatic electromagnetic field mode of a resonant tank circuit is studied. It is shown that for certain values of the parameters, it can be used as an entangling gate, which entangles the two qubits whilst the electromagnetic field remains disentangled. The gate operates with decent fidelity to a gate and could form the basis for initial experimental investigations of coupled superconducting qubits

Topics: Quantum information, Quantum computing, Entanglement and quantum nonlocality, Superconducting Quantum Interference Devices (SQUIDs)
Year: 2003
DOI identifier: 10.1016/j.physleta.2003.10.013
OAI identifier: oai:bradscholars.brad.ac.uk:10454/3891
Provided by: Bradford Scholars
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