Simultaneous nonreciprocal unconventional photon blockade via two degenerate optical parametric amplifiers in spinning resonators

TL;DR

This paper proposes a theoretical scheme for achieving simultaneous nonreciprocal unconventional photon blockade in a system of two spinning resonators with degenerate optical parametric amplifiers, enabling direction-dependent control of single-photon transport.

Contribution

It introduces a novel approach combining spinning resonators and optical parametric amplification to realize nonreciprocal photon blockade in multiple modes simultaneously.

Findings

Analytical conditions for optimal photon blockade achieved.

Nonreciprocal blockade demonstrated by adjusting Sagnac-Fizeau shifts.

Potential applications in topological optics and chiral quantum devices.

Abstract

We propose a scheme to achieving simultaneous nonreciprocal unconventional photon blockade in a system of two coupled spining resonators marked by modes a and b, each incorporating an degenerate optical parametric amplifier (DOPA). By rotating the resonators, input light from opposite directions induces opposite Sagnac-Fizeau shifts. These shifts result in the emergence or absence of quantum destructive interference in two-photon excitation processes. Specifically, when destructive quantum interference occurs, photons from one input direction are simultaneously blocked in both resonators, whereas the absence of complete destructive quantum interference causes the blockade effect to vanish for inputs from the opposite direction. We analytically give the optimal parameter conditions to achieve simultaneous strong photon blockade with the parametric amplification. By adjusting the Sagnac-Fizeau shifts, we can make mode a nonreciprocal photon blockade, while mode b exhibits photon blockade in both directions. This work lays a theoretical foundation for the development of multimode simultaneous nonreciprocal unconventional single-photon devices, which hold promising potential in multichannel topological optics and chiral quantum technologies.