Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session C26: Superconducting Circuits: Josephson Amplifiers and Non-reciprocal Devices
2:30 PM–5:30 PM,
Monday, March 4, 2019
BCEC
Room: 160B
Sponsoring
Unit:
DQI
Chair: Jose Aumentado
Abstract: C26.00004 : Theoretical study of nonreciprocal microwave transmission based on Gebhard-Ruckenstein hopping*
3:06 PM–3:18 PM
Presenter:
Shumpei Masuda
(Tokyo Medical and Dental University)
Authors:
Shumpei Masuda
(Tokyo Medical and Dental University)
Shingo Kono
(The University of Tokyo)
Keishi Suzuki
(The University of Tokyo)
Yuuki Tokunaga
(NTT Secure Platform Laboratories, NTT Corporation)
Yasunobu Nakamura
(The University of Tokyo)
Kazuki Koshino
(Tokyo Medical and Dental University)
In this presentation, we theoretically investigate the nonreciprocal microwave transmission based on the Gebhard-Ruckenstein hopping. We consider a superconducting device that consists of microwave resonators and a coupler. The Gebhard-Ruckenstein hopping between the resonators gives rise to a linear energy dispersion, which manifests chiral propagation of microwaves in the device. This device can work as a microscopic circulator when transmission lines are attached. It is shown that our microwave circulator can be robust against detuning of incident microwaves.
*We acknowledge the support from JST ERATO (JPMJER1601) and JSPS KAKENHI (16K05497 and 18K03486).
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