arXiv:1912.05246 · Physical Review A

Photon blockade in a bimode nonlinear nanocavity embedded with a quantum dot

Xinyun Liang, Zhenglu Duan, Qin Guo, Shengguo Guan, Min Xie, Cunjin Liu

Published Nov 13, 2020• 42 citations

Abstract

We study the photon antibunching effect in a bimode nano-optical cavity filled with the second-order nonlinear material and embedded with a quantum dot. Analytical results show that both the conventional photon blockade (CPB) induced by the nonlinear interaction between polaritons and the unconventional photon blockade (UCPB) induced by the quantum interference appear in our model. In particular, we find that CPB and UCPB can simultaneously occur in an overlapped parameter regime, which allows one to prepare a single-photon source with high purity and high brightness in the strong-coupling regime. Furthermore, owing to the multipathway interference in this composite model, the photon antibunching effect is significantly enhanced compared to that in the Jaynes-Cummings model and in the degenerate optical parametric amplifier in the weak-coupling regime.

DOI: 10.1103/physreva.102.053713

Related papers

Strong antibunching effect under the combination of conventional and unconventional photon blockade

Hongyan Zhu, Xiaomiao Li, Zigeng Li +2 more

Photon blockade (PB), an effective method of generating antibunching effect, is a critical way to construct a single photon source. The PB effect can be divided into conventional PB effect (CPB) and unconventional PB effect (UPB). Most studies focus on designing systems to successfully enhance CPB or UPB effect individually. However, CPB extremely depends on the nonlinearity strength of the Kerr materials to achieve strong antibunching effect while UPB relies on quantum interference beset with the high probability of the vacuum state. Here, we propose a method to utilize the relevance and complementarity of CPB and UPB to realize these two types simultaneously. We employ a hybrid Kerr nonlinearity two-cavity system. Because of the mutual assistance of two cavities, CPB and UPB can coexist in the system under certain states. In this way, for the same Kerr material, we reduce the value of the second-order correlation function due to CPB by three orders of magnitude without losing the mean photon number due to the presence of UPB, so the advantages of both PB effects are fully reflected in our system, which is a huge performance boost for single photons.

Optics ExpressMay 24, 202316 citations

Photon Blockade in a Jaynes–Cummings Hybrid System With Kerr Nonlinearity

Yuxuan Wang, Shen Zhao, Hui Yang +1 more

We investigate the photon blockade effect in a Jaynes-Cummings hybrid system with Kerr nonlinearity. Specifically, the hybrid system consists of a Jaynes-Cummings model nonlinearly coupled to two other optical modes. Our results, supported by both analytical calculations and numerical simulations, show that strong photon antibunching can occur in this system. Compared with a system without Kerr nonlinearity, the proposed system exhibits a stronger photon blockade effect due to the superposition of unconventional (quantum interference) and conventional (Kerr-induced anharmonicity) blockade mechanisms. Furthermore, we discuss the influences of Jaynes-Cummings coupling and driving strength on the photon blockade. Our findings may contribute to the design and application of single-photon source devices.

IEEE AccessJan 1, 20260 citations

Conventional and unconventional photon blockade effects in quantum optomechanics

Xiang-Xiang Lu, Jia Ni, Feng-Chao Wang +2 more

We theoretically study the photon blockade (PB) effect in a double-cavity optomechanical system with the two-photon driving. By analytical calculations and numerical simulations, the physical mechanisms of conventional photon blockade (CPB) and unconventional photon blockade (UPB) are discussed in detail. And then we obtain the optimal parameter conditions for PB. In our work, there exist both the CPB induced by strong nonlinear interaction and the UPB caused by quantum interference. In particular, we find that CPB and UPB can occur simultaneously under the same parameters. In addition, we also prove that the appropriate values of nonreciprocal coupling and two-photon driving are favorable to the improvement of PB. Our proposal provides an idea for simultaneously realizing CPB and UPB in the optomechanical system and offers a route for constructing high-quality single-photon sources.

Frontiers of PhysicsJul 23, 20252 citations

Robust Universal Photon Blockade in a Bimodal Jaynes-Cummings Model via Kerr Nonlinearity

Guohao Chang, Hunduz Halemjan, Shangyun Liu +2 more

Universal photon blockade in a two-mode Jaynes-Cummings model incorporating third-order Kerr nonlinearity is demonstrated with a single two-level atom coupled to a waveguide microcavity. Realization of this universal photon blockade is attributed to the cooperative effects of field-atom coupling and Kerr nonlinearity. More importantly, this antibunching is found to be robust against the atomic spontaneous emission, driving field strength, and defect-induced cavity mode coupling. The strong antibunching effect in this resonance-driven scheme is essentially different from those without Kerr nonlinearity. Moreover, this work expands the platform for achieving universal photon blockade and reveals the cooperative advantages of nonlinearities in enhancing the purity and brightness of single-photon sources, representing a novel strategy toward high-performance single-photon sources in integrated quantum optical devices.

quant-pharXiv:2604.03838Physical Review AApr 7, 20260 citations

Unconventional Photon Blockade in Quantum‐Well Microcavities with Squeezed Light

Houcem Jabri, Hichem Eleuch

The single‐photon blockade effect arising in a cavity containing a quantum well and interacting with squeezed light, resulting from a down‐conversion process through a nonlinear medium, is investigated. Optical parametric oscillator (OPO) materials with positive and negative second‐order susceptibilities are considered. By solving the master equation analytically in the weak‐driving limit and calculating the second‐order equal‐time correlation function, it is found that strong photon antibunching can be achieved in this system with weak excitonic nonlinearity or squeezed light via a destructive quantum interference mechanism. The optimal conditions for the photon blockade are derived analytically and discussed in details. Unlike the excitonic nonlinearity, a strong photon blockade occurs with the squeezed light at total or quasitotal resonance, even in the weak coupling regime, using an OPO material with negative second‐order nonlinear susceptibility. By acting on the driving coherent pump frequency, the control of the cavity output is achieved and the scheme can serve as a tunable single‐photon emission source.

physica status solidi (b)May 13, 20212 citations

Quantum-interference-assisted photon blockade in a cavity via parametric interactions

Bijita Sarma, Amarendra K. Sarma

We propose a scheme to achieve a strong photon antibunching with a degenerate optical parametric amplifier coupled to a cavity via unconventional photon blockade. The photon blockade occurs as a result of the suppression of two-photon excitation due to a quantum interference effect between different transition paths. Via analytical calculations, we find out the conditions for optimized photon antibunching in terms of parametric gain and the parametric amplifier pump phase. Calculations of second-order correlation function demonstrate strong photon antibunching. The numerical results are compared with the analytical results and both are in complete agreement. Under the optimal parameters, the system can be used to generate sub-Poissonian light.

Physical Review ANov 13, 201788 citations