Dissipative entanglement generation between two qubits parametrically driven and coupled to a resonator

Sebastián Luciano Gallardo, Daniel Domínguez, and María José Sánchez
Phys. Rev. A 105, 052413 – Published 9 May 2022

Abstract

An entangled-state generation protocol for a system of two qubits driven with an ac signal and coupled through a resonator is introduced. We explain the mechanism of entanglement generation in terms of an interplay between unitary Landau-Zener-Stückelberg (LZS) transitions, induced for appropriate frequencies and strong amplitudes of the applied ac signal and dissipative processes dominated by photon loss. In this way, we find that the steady state of the system can be tuned to be arbitrarily close to a Bell state, which is stable against photon loss. Effective two-qubit Hamiltonians that reproduce the resonance patterns associated with LZS transitions are derived.

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  • Received 23 November 2021
  • Revised 14 February 2022
  • Accepted 15 April 2022

DOI:https://doi.org/10.1103/PhysRevA.105.052413

©2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Sebastián Luciano Gallardo1, Daniel Domínguez1, and María José Sánchez1,2

  • 1Centro Atómico Bariloche and Instituto Balseiro (Universidad Nacional de Cuyo), 8400 San Carlos de Bariloche, Río Negro, Argentina
  • 2Instituto de Nanociencia y Nanotecnología (INN), CONICET-CNEA, Argentina

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Issue

Vol. 105, Iss. 5 — May 2022

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