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Quantum Downconversion and Multipartite Entanglement via a Mesoscopic Superconducting Quantum Interference Device Ring

journal contribution
posted on 2023-06-08, 00:39 authored by P B Stiffell, M J Everitt, TD Clark, C J Harland, J F Ralph
In this paper we study, by analogy with quantum optics, the superconducting quantum interference device (SQUID) ring mediated quantum mechanical interaction of an input electromagnetic field oscillator mode with two or more output oscillator modes at subintegers of the input frequency. We show that through the nonlinearity of the SQUID ring multiphoton downconversion can take place between the input and output modes with the resultant output photons being created in an entangled state. We also demonstrate that the degree of this entanglement can be adjusted by means of a static magnetic flux which controls the strength of the interaction between these modes via the SQUID ring.

History

Publication status

  • Published

Journal

Physical Review B

ISSN

1098-0121

Publisher

American Physical Society

Issue

1

Volume

72

Page range

014508

Department affiliated with

  • Engineering and Design Publications

Notes

Quantum downconversion and multipartite entanglement via a mesoscopic superconducting quantum interference device ring

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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