Nonreciprocity via Nonlinearity and Synthetic Magnetism

Abstract

We propose how to realize nonreciprocity for a weak input optical field via nonlinearity and synthetic magnetism. We show that the photons transmitting from a linear cavity to a nonlinear cavity (i.e., an asymmetric nonlinear optical molecule) exhibit nonreciprocal photon blockade but no clear nonreciprocal transmission. Both nonreciprocal transmission and nonreciprocal photon blockade can be observed, when one or two auxiliary modes are coupled to the asymmetric nonlinear optical molecule to generate an artificial magnetic field. Similar method can be used to create and manipulate nonreciprocal transmission and nonreciprocal photon blockade for photons bi-directionally transport in a symmetric nonlinear optical molecule. Additionally, a photon circulator with nonreciprocal photon blockade is designed based on nonlinearity and synthetic magnetism. The combination of nonlinearity and synthetic magnetism provides us an effective way towards the realization of quantum nonreciprocal devices, e.g., nonreciprocal single-photon sources and single-photon diodes.

Dissipation-induced nonreciprocal magnon blockade in a magnon-based hybrid system

“…Moreover, our approach is experimentally implementable with the state-of-the-art technologies. It offers a new way to develop nonreciprocal quantum devices based on the nonreciprocal magnon blockade, and may find promising applications in chiral quantum technologies [47][48][49][50][51].…”

“…[45] and [46] have proposed to engineer the nonreciprocal photon blockade in a spinning Kerr cavity and the nonreciprocal phonon blockade in a composite spin-phononic system, respectively. In chiral quantum technologies, quantum nonreciprocal devices are crucial elements and have received extensive attention [47][48][49][50][51]. However, up to now, the nonreciprocal magnon blockade has not yet been investigated.…”

Static synthetic gauge field control of double optomechanically induced transparency in a closed-contour interaction scheme

“…Going beyond the so-called static gauge field, in cases where the field freely evolves and behaves like a limitcycle oscillator, it can acquire a dynamical degree of freedom of its own [50,51]. Both static and dynamical synthetic gauge fields have been employed in optomechanics [50,[52][53][54][55][56][57][58] and other hybrid systems involving atoms [59] and spins [60].…”

Static synthetic gauge field control of double optomechanically induced transparency in a closed-contour interaction scheme

“…Going beyond the so-called static gauge field, in cases where the field freely evolves and behaves like a limit-cycle oscillator, it can acquire a dynamical degree of freedom of its own [40,41]. Both static and dynamical synthetic gauge fields have been utilized in optomechanics [40,[42][43][44][45][46][47][48], and other hybrid systems involving atoms [49], and spins [50].…”