Polarization-based plug-and-play measurement-device-independent quantum key distribution

Hu, Min; Zhang, Litao; Guo, Banghong; Li, Jun

doi:10.1007/s11082-018-1736-1

Cited by 6 publications

(7 citation statements)

References 35 publications

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“…For the sake of completeness, we describe the polarization encoding scheme. Polarization is perhaps the best known and most used of all possible photonic encodings, and A-MDI schemes involving it have already been proposed [30]. Still, we describe it here for two reasons in addition to the mentioned completeness.…”

Section: A-mdi-qkd System With Polarization Modesmentioning

confidence: 99%

“…Still, we describe it here for two reasons in addition to the mentioned completeness. The first one is because we do it using a different autocompensating device (a closed cycle with a HWP) to the one used in reference [30] where Faraday mirrors are used. The second, and most important, is because in SM-FMF for space division multiplexing, as for example an elliptical FMFs, spatial modes are separated but polarization modes are close [20].…”

Section: A-mdi-qkd System With Polarization Modesmentioning

confidence: 99%

“…10, the range at which we can transmit secure information depends critically on the value of α opt . The values for the parameters used in the simulation were taken across the relevant literature [15,30,33,34] and are detailed in Fig. 10.…”

Section: Secret Key Rate Analysismentioning

confidence: 99%

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Autocompensating measurement-device-independent quantum cryptography in space division multiplexing optical fibers

Liñares

Carral

Prieto-Blanco

et al. 2021

J. Eur. Opt. Soc.-Rapid Publ.

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Single photon or biphoton states propagating in optical fibers or in free space are affected by random perturbations and imperfections that disturb the information encoded in such states and accordingly quantum key distribution is prevented. We propose three different systems for autocompensating such random perturbations and imperfections when a measurement-device-independent protocol is used. These systems correspond to different optical fibers intended for space division multiplexing and supporting collinear modes, polarization modes or codirectional modes such as few-mode optical fibers and multicore optical fibers. Accordingly, we propose different Bell-states measurement devices located at Charlie system and present simulations that confirm the importance of autocompensation. Moreover, these types of optical fibers allow the use of several transmission channels, which compensates the reduction of the bit rate due to losses.

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Section: A-mdi-qkd System With Polarization Modesmentioning

confidence: 99%

Section: A-mdi-qkd System With Polarization Modesmentioning

confidence: 99%

See 1 more Smart Citation

Autocompensating measurement-device-independent quantum cryptography in space division multiplexing optical fibers

Liñares

Carral

Prieto-Blanco

et al. 2021

J. Eur. Opt. Soc.-Rapid Publ.

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show abstract

“…For the sake of completeness, we describe the polarization encoding scheme. Polarization is perhaps the best known and most used of all possible photonic encodings, and A-MDI schemes involving it have already been proposed [25]. Still, we describe it here for two reasons apart from the mentioned completeness.…”

Section: A-mdi-qkd System With Polarization Modesmentioning

confidence: 99%

“…Still, we describe it here for two reasons apart from the mentioned completeness. The first one is because we do it using a different autocompensating device (a closed cycle with a HWP) to the one used in reference [25] where Farday mirrors are used. The second, and most important, is because in SM-FMF for space division multiplexing, as for example an elliptical FMFs, spatial modes are separated but polarization modes are close [26].…”

Section: A-mdi-qkd System With Polarization Modesmentioning

confidence: 99%

Autocompensating Measurement-Device-Independent Quantum Cryptography in Space Division Multiplexing Optical Fibers

Liñares

Carral

Prieto-Blanco

et al. 2021

Preprint

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Single photon or biphoton states propagating in optical bers or in free space are affected by random perturbations or imperfections along optical bers or free space that disturb the information encoded in such states and accordingly quantum key distribution is prevented. We propose three different systems for autocompensating such random perturbations and imperfections when a measurement-device-independent protocol is used. These systems correspond to different optical bers intended for space division multiplexing and supporting collinear modes, polarization modes or codirectional modes such as few-mode optical bers and multicore optical bers. Accordingly, we propose different Bell-states measurement devices. Finally, these types of optical bers allow the use of several transmission channels what compensates the reduction of the bit rate due to losses.

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2×N twin-field quantum key distribution network configuration based on polarization, wavelength, and time division multiplexing

et al. 2022

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Developing quantum key distribution (QKD) has been recently directed toward distance extension and network expansion for real-world secure communications. Considering a recent report on a quantum communication network over 4,600 km, it seems that QKD networks using conventional protocols have been sufficiently studied. However, although the twin-field QKD (TF-QKD) proposed for long-distance QKD has been studied deeply enough to succeed the demonstrations over 428- and 511-km deployed fibers, TF-QKD networks have been verified only for a ring network. In this work, we propose a star topological 2 × N TF-QKD network scheme, where the coherence maintenance issue, being the primary obstacle to implementing TF-QKD, can be minimized by the automatic mode-matching feature of the Sagnac-based plug-and-play architecture. A lower number of active controllers is required for our scheme in comparison with one-way TF-QKD networks. Moreover, our scheme adopts a cost-effective configuration that requires only a single pair of single-photon detectors for the entire network system. We conducted a proof-of-concept experiment over a 50-km fiber successfully, achieving an average secret key rate of 1.31 × 10−4 bit per pulse (1.52 bit per second) with the finite-size effect.

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Polarization-based plug-and-play measurement-device-independent quantum key distribution

Cited by 6 publications

References 35 publications

Autocompensating measurement-device-independent quantum cryptography in space division multiplexing optical fibers

Autocompensating measurement-device-independent quantum cryptography in space division multiplexing optical fibers

Autocompensating Measurement-Device-Independent Quantum Cryptography in Space Division Multiplexing Optical Fibers

2×N twin-field quantum key distribution network configuration based on polarization, wavelength, and time division multiplexing

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