Nonreciprocity Steered with a Spinning Resonator

Abstract

An approach is presented to study the controllable nonreciprocal transmission in a spinning resonator. It has been demonstrated in optomechanics that an optical signal field can only be affected when it propagates in the same direction as the driving field. We show that such an optomechanically induced nonreciprocity can be controlled by rotating the resonator, which introduces a frequency shift with different signs for clockwise and counterclockwise optical fields in the resonator. In our scheme, the transmission probabilities of the clockwise and counterclockwise input signal fields can be reversed by tuning the rotation velocity of the resonator. By studying the transmission spectra of the signal field, we also reveal that the nonreciprocity response can be realized in the spinning resonators in the absence of optomechanical coupling, which extends its utility.

Unidirectional Reflectionlessness and Transmissionlessness in Indirectly Coupled Whispering‐Gallery Mode Resonators

“…In recent years, lots of researches based on WGM resonator focused on exploring the transmission characteristics in nonreciprocal systems. [31][32][33][34][35][36][37][38][39] For example, in 2011, Mi et al successfully achieved asymmetric transmission and reflection by using a WGM resonator system embedded with Zeeman split quantum dot. [32] They also analyzed the effects of some system parameters on scattering characteristics.…”

“…In recent years, lots of researches based on WGM resonator focused on exploring the transmission characteristics in nonreciprocal systems. [ 31–39 ] For example, in 2011, Mi $$et\nobreakspace al$$. successfully achieved asymmetric transmission and reflection by using a WGM resonator system embedded with Zeeman split quantum dot.…”

Multiterminal nonreciprocal routing in an optomechanical plaquette via synthetic magnetism

“…Recently, in order to satisfy the demand of on-chip integrated information processing, the research of magnetic-free optical nonreciprocity scheme has attracted a lot of attention. As one of the most promising magnetic-free nonreciprocal schemes, optomechanically induced nonreciprocity has attracted much interest in the past decade [5][6][7], and various nonreciprocal mechanisms based on optomechanical interactions are proposed theoretically and demonstrated experimentally, such as direction-dependent optomechanical nonlinearity [8][9][10][11], microring with unidirectional pumping [12][13][14][15][16][17][18], stimulated Brillouin scattering [19][20][21], dynamically encircling an exceptional point [22][23][24], Sagnac effect in spinning resonator [25][26][27][28][29][30][31][32], and quantum interference based on synthetic magnetism [33][34][35].…”