Purification and switching protocols for dissipatively stabilized entangled qubit states

Sven M. Hein, Camille Aron, Hakan E. Türeci

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Pure dephasing processes limit the fidelities achievable in driven-dissipative schemes for stabilization of entangled states of qubits. We propose a scheme which, combined with already existing entangling methods, purifies the desired entangled state by driving out of equilibrium auxiliary dissipative cavity modes coupled to the qubits. We lay out the specifics of our scheme and compute its efficiency in the particular context of two superconducting qubits in a cavity-QED architecture, where the strongly coupled auxiliary modes provided by collective cavity excitations can drive and sustain the qubits in maximally entangled Bell states with fidelities reaching 90% for experimentally accessible parameters.

Original languageEnglish (US)
Article number062331
JournalPhysical Review A
Volume93
Issue number6
DOIs
StatePublished - Jun 23 2016

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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