Simultaneous blockade of a photon phonon, and magnon induced by a two-level atom

TL;DR

This paper explores how introducing a two-level atom into a hybrid microwave optomechanical-magnetic system enables simultaneous blockade of photons, phonons, and magnons, advancing quantum information processing capabilities.

Contribution

It demonstrates that a two-level atom can induce simultaneous blockade of photon, phonon, and magnon excitations, even in weak coupling regimes, under specific resonance conditions.

Findings

Simultaneous blockade of photon, phonon, and magnon achieved

Unconventional blockade cannot block both photon and magnon alone

Phonon blockade requires cryogenic temperatures

Abstract

The hybrid microwave optomechanical-magnetic system has recently emerged as a promising candidate for coherent information processing because of the ultrastrong microwave photon-magnon coupling and the longlife of the magnon and phonon. As a quantum information processing device, the realization of a single excitation holds special meaning for the hybrid system. In this paper, we introduce a single two-level atom into the optomechanical-magnetic system and show that an unconventional blockade due to destructive interference cannot offer a blockade of both the photon and magnon. Meanwhile, under the condition of single excitation resonance, the blockade of the photon, phonon, and magnon can be achieved simultaneously even in a weak optomechanical region, but the phonon blockade still requires the cryogenic temperature condition.