Quantum information-holding single-photon router based on spontaneous emission

Yan, Guo-An; Qiao, Huijie; Lü, Hua; Chen, Ai-Xi

doi:10.1007/s11433-017-9059-3

Cited by 17 publications

(7 citation statements)

References 50 publications

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“…Quantum nodes, which generate, process and store quantum information, are connected by long-distance quantum channels, while quantum repeaters establish and distribute entanglement. As one kind of node devices, quantum routers [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] are a key component of quantum network, which can transmit information continuously between remote quantum nodes. Photons play significant roles in the construction of quantum router because they are relatively free of the decoherence [23,24]that plagues other quantum systems, and can be manipulated and detected easily.…”

Section: Introductionmentioning

confidence: 99%

Realization of Tunable Highly-Efficient Quantum Routing in Chiral Waveguides

Yan

Lü

2022

Front. Phys.

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The chiral interaction between single photons in waveguides and quantum emitters has gained considerable attention. Here, we proposed a tunable quantum routing scheme with a chiral quantum system by coupling an emitter to two chiral waveguides. Conventional quantum routers can only be achieved with each port output probability no larger than 25%. But our scheme can transfer quantum information arbitrarily from an input port to another, and each port’s output probability is 100%. Besides, we investigated the influence of the Purcell factor in quantum routing properties. No matter how to change the size of the directionalities Sj or set a specific value to the dissipation of the emitter, we always found that the quantum routing has very high efficiency. Moreover, we also used a superconducting qubit coupled to two resonators to show the present scheme is pretty feasible for experimental implementation.

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Section: Introductionmentioning

confidence: 99%

Realization of Tunable Highly-Efficient Quantum Routing in Chiral Waveguides

Yan

Lü

2022

Front. Phys.

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“…Recently, the rapid development of photon transport technology in coupled-resonator waveguide (CRW) systems [11][12][13][14][15] provides an ideal platform for single-photon quantum routing, in which the CRW is utilized as a quantum channel for optical signal transmission, and the quantum emitter coupled to the CRW is used to route photons to each channel. Currently, considerable attention has been paid to photon quantum routing that has been implemented in many systems including a whispering-gallery-mode resonator [16], quantum dot [17], cavity quantum electrodynamics [18][19][20][21][22], and optomechanical system [23].…”

Section: Introductionmentioning

confidence: 99%

“…However, in the current routing system, the routing rate of the routers from the main channel to other channels is not more than 50% [18][19][20], which may limit its more potential applications. A high routing rate can achieve an efficient expected allocation of information between channels.…”

Section: Introductionmentioning

confidence: 99%

Single-photon quantum router based on asymmetric intercavity couplings

Li¹,

Li²,

Yan³

2020

Commun. Theor. Phys.

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As a special quantum node in a quantum network, the quantum router plays an important role in storing and transferring quantum information. In this paper, we propose a quantum router scheme based on asymmetric intercavity couplings and a three-level Λ-type atomic system. This scheme implements the quantum routing capability very well. It can perfectly transfer quantum information from one quantum channel to another. Compared with the previous quantum routing scheme, our proposed scheme can achieve the transfer rate of single photons from one quantum channel to another quantum channel reaching 100%, the high transfer rate is located in the almost quadrant regions with negative values of the two variables λa and λb, and their maximum values emerge in the center point λa = λb = −1. Therefore, it is possibly feasible to efficiently enhance the routing capability of the single photons between two channels by adjusting the inter-resonator couplings, and the asymmetric intercavity coupling provides a new method for achieving high-fidelity quantum routers.

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“…Two similar linear optical processes, named "quantum jointing" and "quantum splitting," have been demonstrated. [30] Various single-photon routing schemes based on photonic qubits, [31][32][33] cross-Kerr nonlinearity, [34] atom-cavity, [35][36][37] coupled resonators, [38,39] or optomechanical systems [40] have been proposed or demonstrated. [41] Recently, some schemes [42][43][44][45][46] have been proposed for the construction of single-photon quantum routers based on the nonlinear interaction of the photon-atom in a cavity quantum electrodynamics (QED) system.…”

Section: Introductionmentioning

confidence: 99%

Error-detected single-photon quantum routing using a quantum dot and a double-sided microcavity system

et al. 2019

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Based on a hybrid system consisting of a quantum dot coupled with a double-sided micropillar cavity, we investigate the implementation of an error-detected photonic quantum routing controlled by the other photon. The computational errors from unexpected experimental imperfections are heralded by single photon detections, resulting in a unit fidelity for the present scheme, so that this scheme is intrinsically robust. We discuss the performance of the scheme with currently achievable experimental parameters. Our results show that the present scheme is efficient. Furthermore, our scheme could provide a promising building block for quantum networks and distributed quantum information processing in the future.

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Quantum information-holding single-photon router based on spontaneous emission

Cited by 17 publications

References 50 publications

Realization of Tunable Highly-Efficient Quantum Routing in Chiral Waveguides

Realization of Tunable Highly-Efficient Quantum Routing in Chiral Waveguides

Single-photon quantum router based on asymmetric intercavity couplings

Error-detected single-photon quantum routing using a quantum dot and a double-sided microcavity system

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