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

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 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 photon, phonon, and magnon can be achieved simultaneously even in a weak optomechanical region, but the phonon blockade still requires the cryogenic temperature condition.

Atom‐Mediated Phonon Blockade and Controlled‐Z Gate in Superconducting Circuit System

“…From Figure 1c, in our system, the unconventional photon blockade originates from the destructive interference between the two different paths: a) and b) . After a simple calculation, [ 5 ] we can derive the optimal condition for destructive interference, that is, and . In Figure 6b, we plot the equal‐time second‐order correlation function of the photon with the coupling strength meeting the above optimal conditions.…”

“…The photon blockade effect can be applied as a single-photon source, carrying quantum information and performing quantum computation. [1,2] A lot of attention had been aroused to investigate photon blockade effect in various systems, [3][4][5][6][7][8][9][10][11] which roughly can be classified into the conventional photon blockade resulting from single photon resonance and the unconventional photon blockade owing to destructive interference. [4] In analogy to photon blockade, phonon blockade is a phenomenon in which the appearance of one phonon prevents the excitation of the second phonon in a mechanical oscillator.…”

Superfluid-Mott insulator quantum phase transition in a cavity optomagnonic system

“…In analogy to the cavity optomechanical system, cavity optomagnonic system, a new class of hybrid quantum systems based on collective spin excitations in ferromagnetic materials [35], has received increasing attention in recent years, which provides a new and promising platform for studying macroscopic quantum effects [35][36][37][38][39][40][41][42][43]. The collective spin excitation in ferromagnetic crystals is called a magnon, which can interact coherently with microwaves and optical photons as well as phonons via magnetic dipole, magneto-optical, and magnetostrictive interactions, respectively [44][45][46][47].…”

“…Based on these features of cavity optomagnonic system, many intriguing phenomena have been explored, such as magnon dark modes and gradient memory [51], coher-ent and dissipative magnon-photon interaction [52][53][54][55][56][57][58][59], the high-order sideband generation [60], the self-sustained pscillations and chaos [61][62][63], non-Hermitian physics [55,64,65], entanglement [66][67][68][69][70], magnon-induced nearly perfect absorption [71], magnon Fock state [72], magnon squeezing [73] and so on. Recently, several novel progresses associated with the photon blockade in cavity optomagnonic system are also investigated [74,75,76]. We note that the interplay of the photon blockade and photon hopping is not considered.…”

Entanglement enhanced and one-way steering in PT -symmetric cavity magnomechanics

“…You et al report that the bistability of cavity magnon polaritons [12], G. S. Agarwal et al show that the tripartite entanglement among magnons, photons, and phonons [13]. Besides, the high-order sideband generation [14], magnon Kerr effect [15], the light transmission in cavity-magnon system [16] and others are also studied [17][18][19][20][21][22][23][24][25].…”