Plug-and-play round-robin differential phase-shift quantum key distribution

Mao, Qianping; Wang, Le; Zhao, Shengmei

doi:10.1038/s41598-017-15777-9

Cited by 17 publications

(8 citation statements)

References 38 publications

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“…An interesting variation of this scheme uses photons traveling back and forth to improve the stability of the interferometer, as phase distortions are compensated, however at the cost of a reduced communication distance. [37,38] Several other encoding schemes exist, such as encoding in the relative phase between sidebands of a central optical frequency, [39] the photon path, [40] or using correlations between time bins and photon energy, enabling high-dimensional encoding. [41] Also, several ways exist to convert the different encoding types into each other.…”

Section: Introductionmentioning

confidence: 99%

Quantum Communication Using Semiconductor Quantum Dots

et al. 2022

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Worldwide, enormous efforts are directed toward the development of the so-called quantum internet. Turning this long-sought-after dream into reality is a great challenge that will require breakthroughs in quantum communication and computing. To establish a global, quantum-secured communication infrastructure, photonic quantum technologies will doubtlessly play a major role, by providing and interfacing essential quantum resources, for example, flying-and stationary qubits or quantum memories. Over the last decade, significant progress has been made in the engineering of on-demand quantum light sources based on semiconductor quantum dots, which enable the generation of close-to-ideal single-and entangled-photon states, useful for applications in quantum information processing. This review focuses on implementations of, and building blocks for, quantum communication using quantum-light sources based on epitaxial semiconductor quantum dots. After reviewing the main notions of quantum communication and introducing the devices used for single-photon and entangled-photon generation, an overview of experimental implementations of quantum key distribution protocols using quantum dot based quantum light sources is provided. Furthermore, recent progress toward quantum-secured communication networks as well as building blocks thereof is summarized. The article closes with an outlook, discussing future perspectives in the field and identifying the main challenges to be solved.

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Section: Introductionmentioning

confidence: 99%

Quantum Communication Using Semiconductor Quantum Dots

et al. 2022

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“…The first QKD protocol named BB84 was proposed in 1984 by Bennett and Brassard [1]. Ever since then, plenty of QKD protocols, such as decoystate QKD protocols [2-4], measurement-device-independent quantum key distribution (MDI-QKD) protocols [5][6][7][8][9][10], round-robin differential-phase-shift quantum key distribution (RRDPS-QKD) protocols [11][12][13], etc., have been proposed to overcome the obstacles in the QKD's development.…”

Section: Introductionmentioning

confidence: 99%

Prefixed-Threshold Real-Time Selection for Free-Space Sending-or-Not Twin-Field Quantum Key Distribution

Wang

et al. 2022

Entropy

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As a variant of the twin-field quantum key distribution (TF-QKD), the sending-or-not twin-field quantum key distribution (SNS TF-QKD) is famous for its higher tolerance of misalignment error, in addition to the capacity of surpassing the rate–distance limit. Importantly, the free-space SNS TF-QKD will guarantee the security of the communications between mobile parties. In the paper, we first discuss the influence of atmospheric turbulence (AT) on the channel transmittance characterized by the probability distribution of the transmission coefficient (PDTC). Then, we present a method called prefixed-threshold real-time selection (P-RTS) to mitigate the interference of AT on the free-space SNS TF-QKD. The simulations of the free-space SNS TF-QKD with and without P-RTS are both given for comparison. The results showed that it is possible to share the secure key by using the free-space SNS TF-QKD. Simultaneously, the P-RTS method can make the free-space SNS TF-QKD achieve better and more stable performance at a short distance.

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“…Up to now, there are a lot of published works concerning the RRDPS-QKD protocol [15][16][17][18][19][20][21][22][23][24]. The RRDPS-QKD protocol with the heralded pair-coherent source [20], the one with a passive decoy state method [21], and the one with a combination of the wavelength division multiplexing technique and the orbital angular momentum (OAM) theory [24] were demonstrated to improve both the key rate and the transmission distance greatly.…”

Section: Introductionmentioning

confidence: 99%

Efficient quantum key distribution based on hybrid degrees of freedom

2019

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Round-robin differential-phase-shift (RRDPS) quantum key distribution (QKD) protocol is a practical QKD protocol without monitoring the signal disturbance. However, how to further increase the secure key rate is still a challenge in practice. In the paper, we propose a high efficient QKD protocol based on RRDPS-QKD, where the photon-states are encoded in two degrees of freedom (DOFs), phase and polarization. The key generation rate and the security of the proposal protocol are analyzed. The simulation results show that the secure key rate is greatly improved in comparison with the original RRDPS-QKD protocol by breaking the limitation of quantum state in a single DOF. Moreover, our protocol can still maintain the high error tolerance of RRDPS-QKD protocol.

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Plug-and-play round-robin differential phase-shift quantum key distribution

Cited by 17 publications

References 38 publications

Quantum Communication Using Semiconductor Quantum Dots

Quantum Communication Using Semiconductor Quantum Dots

Prefixed-Threshold Real-Time Selection for Free-Space Sending-or-Not Twin-Field Quantum Key Distribution

Efficient quantum key distribution based on hybrid degrees of freedom

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