3 papers
quant-ph2021
A low-loss ferrite circulator as a tunable chiral quantum system
Ying-Ying Wang, Sean van Geldern, Thomas Connolly +5
Ferrite microwave circulators allow one to control the directional flow of microwave signals and noise, and thus play a crucial role in present-day superconducting quantum technolo…
quant-ph2020
Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics
Alexander McDonald, Aashish A. Clerk
We study how unique features of non-Hermitian lattice systems can be harnessed to improve Hamiltonian parameter estimation in a fully quantum setting. While the so-called non-Hermi…
cond-mat.mes-hall2018
Phase-dependent chiral transport and effective non-Hermitian dynamics in a bosonic Kitaev-Majorana chain
Alexander McDonald, T. Pereg-Barnea, A. A. Clerk
We study a 1D chain of non-interacting bosonic cavities which are subject to nearest-neighbour parametric driving. With a suitable choice of drive phases, this model is strongly an…