Realization of the unconventional photon blockade based on a three-wave mixing system

Abstract

In this paper, the unconventional photon blockade is studied in a three-wave-mixing system with a non-degenerate parametric amplification. A method of only retaining the Fock-state basis in the interference path is used to calculate the optimal analytic conditions of unconventional photon blockade. The numerical results agree well with the analytic conditions, which verifies the validity of this method. Our calculations indicate that the strong photon antibunching can be obtained in the high-frequency mode of the three-wave mixing. And the influence of system parameters on photon blockade is also discussed.

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.…”

“…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. photon [43,44] and phonon [38,39] unconventional blockade. Our proposal of HMM is developed in a weak optomechanical coupling regime and hence to enhance the quantum nonlinearity in the HMM we propose to connect the mechanical oscillator (MO) to a squeezed phonon reservoir.…”

Conventional photon blockade in a four-wave mixing system with Kerr nonlinearity

“…The other method is unconventional photon blockade (UPB), which leads to quantum destructive interference between distinct driven-dissipative pathways, and a strong photon anti-bunching can be realized with small non-linearity in the system of UPB. Up to now, the UPB has been predicted in many systems, such as optical cavities with a quantum dot [30][31][32], coupled single mode cavities with second-order or third-order non-linearity [33][34][35][36], semiconductor cavities [37,38], and so on. The second-order correlation function can be used to judge whether PB can be generated.…”