Generation of single entangled photon-phonon pairs via an atom-photon-phonon interaction

Abstract

Quantum blockade and entanglement play important roles in quantum information and quantum communication as quantum blockade is an effective mechanism to generate single photons (phonons) and entanglement is a crucial resource for quantum information processing. In this work, we propose a method to generate single entangled photon-phonon pairs in a hybrid optomechanical system. We show that photon blockade, phonon blockade, and photon-phonon correlation and entanglement can be observed via the atom-photon-phonon (tripartite) interaction, under the resonant atomic driving. The correlated and entangled single photons and single phonons, i.e., single entangled photonphonon pairs, can be generated in both the weak and strong tripartite interaction regimes. Our results may have important applications in the development of highly complex quantum networks.

Phonon trapping states as a witness for generation of phonon blockade in a hybrid micromaser system

“…In the following we discuss how to realize the effect of phonon blockade and its relation to the trapping states. As was mentioned in the Introduction, to get the phonon blockade, according to the recent studies [30,33,34,[38][39][40] two mechanisms can be used: i) conventional -by a strong driven phonon nonlinearity in the system, or ii) unconventional -by the destructive interference between different paths which restrict the higher than one-phonon excitations.…”

“…The hybrid systems considering interactions between cavities, atoms and mechanical resonators, nowadays are of great importance for many applications in quantum technologies [21][22][23] as well are the promising candidates to probe the foundations of the quantum mechanics, e.g. macroscopic quantum superpositions [24][25][26][27], quantum correlations at macroscopic scales [28,29], phonon and photon blockade effects [30][31][32][33][34][35][36][37][38][39][40].…”

“…Another quantum effect which attracted our interest is the phonon blockade (antibunching). The effects of phonon and photon blockade were intensively studied the last decade, particularly in the hybrid setups [30][31][32][33][34][35][36][37][38][39][40]. In order to realize such an effect commonly one needs a quantum strong nonlineariry in the system, i.e.…”

“…In order to realize such an effect commonly one needs a quantum strong nonlineariry in the system, i.e. for the photon blockade it can be a strong Jaynes-Cummings interaction [41], strong optomechanical coupling [42], Kerr-type nonlinearity [31]; for the phonon blockade could be a strong effective atom-cavity-mechanics interaction [33], strong opto/spin-mechanical coupling [30,34] or the nonlinear phonon term similar to the Kerr one [40]. An alternative mechanism to stimulate the blockade effect, which is known as unconventional, is based on the destructive quantum interference between different paths so that the two-quanta and higher order excitations are blocked, e.g.…”

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

“…From Eq. ( 12), although the thermal phonon can be in the state |n , the states of photon and magnon still can be in |0 or |1 , which means the blockade of modes a and m still exists, but phonon blockade will be destroyed (n > 1) [42,[50][51][52], and the correlation function of the phonon will close to the that of thermal field. But, the blockade of the photon and magnon is affected slightly by the thermal environment because of the change in the single excitation resonance for |ψ n [25].…”