Chiral states and nonreciprocal phases in a Josephson junction ring
Rodrigo Asensio-Perea, A. Parra-Rodriguez, Gerhard Kirchmair, E. Solano, E. Rico · Physical review. B./Physical review. B · 2021
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.