High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges (Adv. Quantum Technol. 12/2019)

Cozzolino, Daniele; Lio, Beatrice Da; Bacco, Davide; Oxenløwe, Leif Katsuo

doi:10.1002/qute.201970073

Cited by 16 publications

(17 citation statements)

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“…Finally, we perform a rigorous analysis of our resulting key‐rates for various dimensions, showing some fascinating properties of the protocol as the dimension of the quantum signal increases. High‐dimensional quantum states have been shown to be very beneficial to various QKD protocols [ 27,31–41 ] (see [ 42 ] for a recent survey on high‐dimensional quantum communication); we show in this work more evidence that they can also benefit two‐way protocols in the finite key setting (though not to the same extent as in one‐way protocols as our evaluations show). Though the protocol we analyze does not outperform BB84 in the evaluation settings we consider (which is not surprising), the development of new mathematical tools to prove QKD protocols secure, and the study of alternative protocols in general, is still an important task.…”

Section: Introductionsupporting

confidence: 52%

Security of a High Dimensional Two‐Way Quantum Key Distribution Protocol

Krawec

2022

Adv Quantum Tech

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Two-way quantum key distribution (QKD) protocols utilize bi-directional quantum communication to establish a shared secret key. Due to the increased attack surface, security analyses remain challenging. Here a high-dimensional variant of the Ping Pong protocol is investigated and an information theoretic security analysis in the finite-key setting is performed. The main contribution in this work is to show a new proof methodology for two-way quantum key distribution protocols based on the quantum sampling framework of Bouman and Fehr introduced in 2010 and also sampling-based entropic uncertainty relations introduced by the authors in 2019. The PingPong protocol is only investigated here, but these methods may be broadly applicable to other QKD protocols, especially those relying on two-way channels. Along the way, some fascinating benefits to high-dimensional quantum states applied to two-way quantum communication are also showed.

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Section: Introductionsupporting

confidence: 52%

Security of a High Dimensional Two‐Way Quantum Key Distribution Protocol

Krawec

2022

Adv Quantum Tech

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“…[ 2,3 ] Most of the applications, within the quantum internet, require the capacity of sharing and distributing entanglement with different users in multiple locations. [ 4–6 ] Different approaches have been presented so far, from the research community, to accomplish this task exploiting both free‐space links [ 7 ] and fiber‐based approaches. [ 8–13 ] However, most of the current quantum communication protocols are based on point‐to‐point links.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Multiplexed Continuous‐Variable Entanglement for Quantum Networks

Ren

Wang

et al. 2022

Laser & Photonics Reviews

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Quantum networks, the backbone of the future quantum internet, require flexible and precise control to faithfully share entanglement with different users. These networks will allow multiple applications including distributed quantum computation and information theoretic secure communication. In this scenario, orbital angular momentum (OAM) can be employed to enhance the capacity of quantum information processing and to distribute quantum entanglement in an efficient and scalable way with multiple users. Here, a method for realizing a multiplexed continuous variable (CV) quantum entanglement distribution based on a four‐wave mixing process combined with an active routing technique is experimentally demonstrated. By exploiting Sagnac‐based OAM sorters, the OAM entanglement can be distributed and measured with the different users in a quasi‐complete star network configuration. The generations of multiple sets of OAM multiplexed bipartite CV entanglement with four users and six users are proposed and demonstrated here. In addition, the propagation of one mode through a 1 km of single‐mode fiber shows the applicability of this approach. These results propose and demonstrate a new method for distributing CV entanglement in a quantum network enlarging the range of applicability of CV quantum information protocols.

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“…[ 2–5 ] Especially in quantum domain, it is strongly desired to increase the information content encoded on a single photon for higher efficiency, better noise resistance, richer resources, and more flexibility of quantum communications, computations, and simulations. [ 6–9 ] So far, OAM encoded quantum states have been utilized in quantum key distribution, [ 10–13 ] quantum ghost imaging, [ 14,15 ] and high‐dimensional quantum entanglement. [ 16,17 ] The potential application of high‐dimensional quantum information has stimulated the research on generating, [ 18,19 ] manipulating, [ 20,21 ] and detecting [ 22,23 ] the optical quantum states encoded with OAM modes.…”

Section: Introductionmentioning

confidence: 99%

Room‐Temperature Generation of Heralded Single Photons on Silicon Chip with Switchable Orbital Angular Momentum

Zhang

Feng

Zhang

et al. 2022

Laser & Photonics Reviews

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In quantum optics, orbital angular momentum (OAM) is very promising to achieve high-dimensional quantum states due to the nature of infinite and discrete eigenvalues, which is quantized by the topological charge of l. Here, a heralded single-photon source with switchable OAM modes is proposed and demonstrated on silicon chip. At room temperature, the heralded single photons with 11 OAM modes (l = 2-6, −6 to −1) are successfully generated and switched through thermo-optical effect. It is believed that such an integrated quantum source with multiple OAM modes and operating at room temperature can provide a practical platform for high-dimensional quantum information processing. Moreover, this proposed architecture can also be extended to other material systems to further improve the performance of OAM quantum source.

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High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges (Adv. Quantum Technol. 12/2019)

Cited by 16 publications

References 0 publications

Security of a High Dimensional Two‐Way Quantum Key Distribution Protocol

Security of a High Dimensional Two‐Way Quantum Key Distribution Protocol

Distribution of Multiplexed Continuous‐Variable Entanglement for Quantum Networks

Room‐Temperature Generation of Heralded Single Photons on Silicon Chip with Switchable Orbital Angular Momentum

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