Quantum key Distribution with a Hand-Held Sender Unit

Vest, Gwenaëlle; Freiwang, Peter; Luhn, Jannik; Vogl, Tobias; Rau, Markus; Knips, Lukas; Rosenfeld, Wenjamin; Weinfurter, Harald

doi:10.1103/physrevapplied.18.024067

Cited by 17 publications

(8 citation statements)

References 58 publications

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“…[94] have developed a low‐cost, short‐range QKD system for consumer applications that can support a peak SKR of 20 Kbps. With the recent advances in integrated photonics and chip‐based QKD [95], considerable progress has been made in the development of handheld QKD terminals [96] that can be used for short‐range applications including secure ATM transactions and device‐to‐device quantum key exchange [97]. Further advancement in chip‐based QKD technology would enable the widespread commercialisation of mobile QKD devices in future 6G networks.…”

Section: Quantum Information Technologies In 6g Networkmentioning

confidence: 99%

The quantum internet: A synergy of quantum information technologies and 6G networks

Rozenman,

Kundu,

Liu

et al. 2023

IET Quantum Communication

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The quantum internet is a cutting‐edge paradigm that uses the unique characteristics of quantum technology to radically alter communication networks. This new network type is expected to collaborate with 6G networks, creating a synergy that will fundamentally alter how we communicate, engage, and trade information. The improved security, increased speed, and increased network capacity of the quantum internet will lead to the emergence of a broad variety of new applications and services. The current state of quantum technology and its integration with 6G networks are summarised in this study, with an emphasis on the key challenges and untapped possibilities. The main goal is to get knowledge about how the quantum internet might impact communication in the future and alter several economic and societal sectors.

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Section: Quantum Information Technologies In 6g Networkmentioning

confidence: 99%

The quantum internet: A synergy of quantum information technologies and 6G networks

Rozenman,

Kundu,

Liu

et al. 2023

IET Quantum Communication

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“…We believe that our future communication infrastructure will be of hybrid nature, where PQC protocols are used for data with a short lifetime and QKD for highly sensitive data. While there is effort to enable QKD for end-user applications (such as mobile authentication at an ATM), 55 it is not yet clear that such scenario will be realized on an intermediate timescale (or at all). In this case, the private end-users would use PQC algorithms and governments, the military, banks, and operators of large data centers would use quantum cryptography.…”

Section: Future Quantum Networkmentioning

confidence: 99%

Satellite-based quantum communication and extended physical theory tests in space

Krause,

Mishuk,

Ahmadi

et al. 2023

Emerging Imaging and Sensing Technologies for Security and Defence VIII

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We present a compact room temperature single photon source based on a color center in hexagonal boron nitride for future long-distance satellite-based quantum networks. The performance of this quantum light source is sufficient to outperform state-of-the-art laser-based decoy quantum key distribution protocols. The emitter is directly coupled to a photonic integrated circuit that routes the single photons to different experiments. This includes both a verification of the single photon source via measuring the photon statistics, as well as a fundamental test extended quantum theory in microgravity. The payload is currently being integrated on a 3U CubeSat and will be launched in 2024 as part of the QUICK3 mission.

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“…To overcome the above issues, Zhao et al proposed a waist pre-compensation protocol by balancing the efficiencies of different mode order quantum states [25]. The protocol is universal but requires real-time feedback and adjustment in case of variable communication distance, such as handheld devices [29], satellites [30] and drone [31] platforms. Another approach proposed by Wang et al adopted the same order quantum states from Laguerre-Gaussian (LG) and Hermite-Gaussian (HG) mode families to encode information [32].…”

Section: Introductionmentioning

confidence: 99%

Compact implementation of high-dimensional mutually partially unbiased bases protocol

Chang

Wang

Guo

et al. 2023

Quantum Sci. Technol.

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Transverse spatial mode of light is crucial in high-dimensional quantum key distribution (QKD). However, applications in realistic scenarios suﬀer from mode-dependent loss and the complexity of system, making it impractical to achieve higher-dimensional, longer-distance and low-cost communications. A mutually partially unbiased bases (MPUBs) protocol has been proposed to fundamentally eliminate the eﬀects induced by mode-dependent loss for long propagation distances and limited sizes of apertures. Here, we demonstrate the ﬁrst implementation of the MPUBs protocol in dimensions of d = 2, 4, 5 and 6. By performing a controlled unitary transformation, we can actively switch the measurement basis and enable a compact measurement system. In consequence, a higher encoding dimension is available under ﬁnite system resources, resulting in higher key rates and stronger noise resistance. Our work enhances the practicability of MPUBs protocol, and may promote the applications of high-dimensional QKD in quantum networks.

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Quantum key Distribution with a Hand-Held Sender Unit

Cited by 17 publications

References 58 publications

The quantum internet: A synergy of quantum information technologies and 6G networks

The quantum internet: A synergy of quantum information technologies and 6G networks

Satellite-based quantum communication and extended physical theory tests in space

Compact implementation of high-dimensional mutually partially unbiased bases protocol

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