Chiral states and nonreciprocal phases in a Josephson junction ring

R. Asensio-Perea, A. Parra-Rodriguez, G. Kirchmair, E. Solano, and E. Rico
Phys. Rev. B 103, 224525 – Published 22 June 2021

Abstract

In this work, we propose how to load and manipulate chiral states in a Josephson junction ring in the so-called transmon regime. We characterize these states by their symmetry properties under time-reversal and parity transformations. We describe an explicit protocol to load and detect the states within a realistic set of circuit parameters and show simulations that reveal the chiral nature. Finally, we explore the utility of these states in quantum technological nonreciprocal devices.

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  • Received 28 September 2020
  • Revised 21 May 2021
  • Accepted 4 June 2021

DOI:https://doi.org/10.1103/PhysRevB.103.224525

©2021 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & Technology

Authors & Affiliations

R. Asensio-Perea1,2, A. Parra-Rodriguez3, G. Kirchmair4,5, E. Solano1,6,7,8, and E. Rico1,8

  • 1Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain
  • 2Quantum Mads, Uribitarte Kalea, 6, Paseo Uribitarte, 3, 48001 Bilbao, Spain
  • 3Department of Physics, University of the Basque Country UPV/EHU, Apartado 644, 48080 Bilbao, Spain
  • 4Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria
  • 5Institute for Experimental Physics, University of Innsbruck, A-6020 Innsbruck, Austria
  • 6Kipu Quantum, Kurwenalstrasse 1, 80804 Munich, Germany
  • 7International Center of Quantum Artificial Intelligence for Science and Technology (QuArtist) and Department of Physics, Shanghai University, 200444 Shanghai, China
  • 8IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain

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Issue

Vol. 103, Iss. 22 — 1 June 2021

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