High-efficiency single-photon router in a network with multiple outports based on chiral waveguide–emitter couplings

Wang, Xin; Wu, Zhen; Li, Ling; Li, Xiyun; Yang, Wen-Xing

doi:10.1088/1612-202x/abdfc9

Cited by 5 publications

(2 citation statements)

References 47 publications

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“…Directional routing can output the required information more accurately and quickly, while non-reciprocal transmission can be used as a means of information filtering, closing the bidirectional transmission of specific information, so that it can only be one-way transmission. In general, single-photon quantum router is mainly composed of two coupled-resonator waveguide and a single quantum transmitter [37]. In the multi-channel quantum router model of this configuration, incident photons are output symmetrically at four ports, and the maximum routing probability is only 50% [38].…”

Section: Introductionmentioning

confidence: 99%

Directional router and controllable non-reciprocity transmission based on phase and pathway coherence

Yang,

Tan,

Liu

2023

Phys. Scr.

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A multi-channel quantum router with four nodal cavities is constructed by two coupled-resonator waveguides and four single cavities. We can achieve directional routing by adjusting the probability of photon exiting from the specified port to close to 100% based on multiple pathways between the photon from the incident port to the outgoing port in this hybrid system. Under the effect of phase difference between two classical light fields, the mutual interference between different pathways can be adjusted to destructive interference or constructive interference, which lays the foundation for the increase and decrease of the routing probability. The influence of different parameter values on single photon routing probability is also studied. By studying the analytic formula of probability amplitude, we get the physical mechanism of exiting ports being closed under certain parameter conditions and the phase relationship between the backward transmission and the original direction transmission of photons. Furthermore the non-reciprocal transmission and directional routing beyond chiral coupling can also be realized, which provides new possibilities for the study of quantum routers and new insights for the study of photon transmission characteristics.

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Section: Introductionmentioning

confidence: 99%

Directional router and controllable non-reciprocity transmission based on phase and pathway coherence

Yang,

Tan,

Liu

2023

Phys. Scr.

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“…Optical nonreciprocity means that the properties of transmitted fields become asymmetry when exchanging the positions of source and detector. [10] Various nonreciprocal phenomena have been intensively investigated, including nonreciprocal transmission and amplification, [11][12][13][14][15][16] nonreciprocal (unconventional) photon blockade, [17][18][19][20] nonreciprocal signal routing, [21][22][23] and nonreciprocal quantum entanglement, [24][25][26] etc. The strategies for realization of nonreciprocity cover magneto-optical materials in conjunction with a magnetic field, [27,28] time modulation of the optical properties, [29] optical nonlinearity, [13,30,31] and synthetic magnetism, [32] etc.…”

Section: Introductionmentioning

confidence: 99%

Nonreciprocal two-photon transmission and statistics in a chiral waveguide QED system

et al. 2022

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We study the nonreciprocal properties of transmitted photons in the chiral waveguide QED system, including single- and two-photon transmissions and second-order correlations. For the single-photon transmission, the nonreciprocity is induced by the effects of chiral coupling and atomic dissipation in the weak coupling region. It vanishes in the strong coupling regime when the effect of atomic dissipation becomes ignorable. In the case of two-photon transmission, there exist two ways of going through the emitter: independently as plane waves and formation of bound state. Besides the nonreciprocal behavior of plane waves, the bound state that differs in two directions also alters transmission probabilities. In addition, the second-order correlation of transmitted photons depends on the interference between plane wave and bound state. The destructive interference leads to the strong antibunching in the weak coupling region, while the effective formation of bound state leads to the strong bunching in the intermediate coupling region. However, the negligible interactions for left-propagating photons hardly change the statistics of the input coherent state.

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Phase-modulated single-photon nonreciprocal transport and directional router in a waveguide–cavity–emitter system beyond the chiral coupling

Wang¹,

Yang²,

Chen³

et al. 2022

Quantum Sci. Technol.

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We propose a potentially practical scheme for the controllable single-photon transport via waveguides which are coupled to a microcavity-emitter system. The microcavity-emitter system consists of a V-type three-level emitter and two or one single-mode microcavity. A driving ﬁeld is used to drive a hyperﬁne transition between two upper excited states of the V-type three-level emitter. Beyond chiral coupling between waveguides and microcavity-emitter system, we show that the perfectly nonreciprocal single-photon transport in a single waveguide and the single-photon router with 100% routing probability in two waveguides can be achieved. Interesting enough, whether the nonreciprocal single-photon transport or the single-photon router can be switched periodically by adjusting the phase associated with microcavity-emitter coupling strength and the driving ﬁeld. The complete physical explanation of the underlying mechanism is presented.

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High-efficiency single-photon router in a network with multiple outports based on chiral waveguide–emitter couplings

Cited by 5 publications

References 47 publications

Directional router and controllable non-reciprocity transmission based on phase and pathway coherence

Directional router and controllable non-reciprocity transmission based on phase and pathway coherence

Nonreciprocal two-photon transmission and statistics in a chiral waveguide QED system

Phase-modulated single-photon nonreciprocal transport and directional router in a waveguide–cavity–emitter system beyond the chiral coupling

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