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Physica Scripta

The photon blockade in a three-wave mixing system coupled with a quantum dot

Tong Mao, Zhihai Yao, Hui Min Yang

Published Mar 15, 2024• 6 citations
Publisher

Abstract

Abstract In this paper, the photon blockade effect in a three-wave mixing coupling system with a quantum dot has been studied. By using analytical calculation and numerical analysis, we find that both the conventional photon blockade and the unconventional photon blockade effects could be realized in this system in strong-coupling regime just by one driving. Besides, compared with Jaynes–Cummings model, this hybrid system shows other obvious advantages in realizing the photon blockade, like blockading photon of more different frequencies, stronger antibunching effect. All the results may provide useful theoretical references for the single-photon devices design by using quantum dot and three-wave mixing system in future experiments and applications.

DOI
10.1088/1402-4896/ad3489

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Abstract In this paper, the photon blockade effect in a three-wave mixing coupling system with a quantum dot has been studied. By using analytical calculation and numerical analysis, we find that both the conventional photon blockade and the unconventional photon blockade effects could be realized in this system in strong-coupling regime just by one driving. Besides, compared with Jaynes–Cummings model, this hybrid system shows other obvious advantages in realizing the photon blockade, like blockading photon of more different frequencies, stronger antibunching effect. All the results may provide useful theoretical references for the single-photon devices design by using quantum dot and three-wave mixing system in future experiments and applications.
In this paper, the photon-pair blockade effect in a three-wave mixing system with Kerr nonlinearity has been studied. By analytical calculation and numerical analysis, we find that the conventional photon blockade and unconventional photon blockade of the photon pair could be realized simultaneously in the strong-coupling regime in this system, and the photon-pair blockade effect could be enhanced strongly by the combination of them. The combination could also lead to a much stronger photon-pair blockade effect in this hybrid system than in a three-wave mixing system, which may contribute to construction of single photon-pair sources with much higher purity without the loss of brightness. In addition, both the same-frequency and different-frequency photon-pair blockades could be realized in this scheme, which may contribute to construction of the same-frequency or different-frequency photon-pair sources or devices. All the results may provide useful theoretical references for the design of correlated photon-pair sources or devices in future experiments and applications.
In this paper, the two-photon blockade effect in an atom-cavity system, by two-photon Jaynes–Cummings coupling, has been studied. In this hybrid system, that is, a three-wave-mixing system with an atom, by means of analytical calculations and numerical simulations, we show that the two-photon blockade effect can be realized. The presence of an atom by two-photon Jaynes–Cummings coupling could make the blockade effect much stronger than that in a three-wave-mixing system. Furthermore, the increase in two-photon Jaynes–Cummings coupling strength could further enhance the blockade effect. All of these may provide useful references for future experimental or application studies of two-photon sources or devices.
Abstract We have investigated the unconventional photon blockade (UPB) in a hybrid system consisting of a Jaynes–Cummings model nonlinearly coupled with two other modes via a three-wave mixing interaction, operating in the weak coupling regime (compared with the decay rates of the system). We present both analytical and numerical results, obtained by solving the Schrödinger equation and the quantum master equation, respectively. The results show that the numerical simulations agree well with the analytical predictions and that the UPB effect would occur in this hybrid system both in the cavity-driven and atom-driven conditions. Under both driving conditions, the hybrid system could exhibit superior performance over the Jaynes–Cummings model under the same driving condition, i.e. achieve a stronger photon blockade effect. The influences of driving strength and coupling coefficient on photon blockade effect have also been discussed. Our finding may have potential applications in single-photon sources design.
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.
In this study, we explore the photon blockade effect in a hybrid quantum dot-optomechanical system with three-wave mixing. Based on this theoretical model, the system’s Hamiltonian is constructed to derive optimal conditions for photon blockade, which are validated through numerical solutions of the master equation in the steady-state limit. The agreement between analytical and numerical results confirms the feasibility of photon blockade. Furthermore, we discuss in detail the effects of several parameters on the realization of photon blockade. The results show that the photon blockade could be enhanced by tuning the coupling strength between the quantum dot and cavity.
The conventional photon blockade is studied in a three-wave-mixing system. The analytic conditions for realizing the photon blockade are obtained by analyzing the eigenvalues of the system Hamiltonian, which is expanded by an effective single excited space for the high-frequency mode. The numerical results are calculated by solving the master equation in a truncated Fock space, which agrees well with the analytic conditions. Different from the other schemes of the conventional photon blockade, photon antibunching can be realized in the three modes of the three-wave-mixing system simultaneously due to the nature of the system.