Work

Josephson photonics with simultaneous resonances

Year: 2021

Type: article

Abstract: Inelastic Cooper pair tunneling across a voltage-biased Josephson junction in series with one or more microwave cavities can generate photons via resonant processes in which the energy lost by the Cooper pair matches that of the photon(s) produced. We generalize previous theoretical treatments of such systems to analyze cases where two or more different photon generation processes are resonant simultaneously. We also explore in detail a specific case where the generation of a single photon in one cavity mode is simultaneously resonant with the generation of two photons in a second mode. We find that the coexistence of the two resonances leads to effective couplings between the modes which in turn generate entanglement.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.104.155424

Authors: Kieran Wood, Andrew D. Armour, Ben Lang

Institution: University of Nottingham

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funder: Leverhulme Trust

Award: G6816718762