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The ideal wavelength for daylight free-space quantum key distribution [PDF]
APL Quantum, 2023 Quantum key distribution (QKD) has matured in recent years from laboratory proof-of-principle demonstrations to commercially available systems. One of the major bottlenecks is the limited communication distance in fiber networks due to the exponential ...
Mostafa Abasifard +7 more
semanticscholar +1 more source
Quantum Key Distribution Networks: Challenges and Future Research Issues in Security
Applied Sciences, 2021 A quantum key distribution (QKD) network is proposed to allow QKD protocols to be the infrastructure of the Internet for distributing unconditional security keys instead of existing public-key cryptography based on computationally complex mathematical ...
Chia-Wei Tsai +4 more
doaj +1 more source
Implementation Security in Quantum Key Distribution [PDF]
Advanced Quantum Technologies, 2023 The problem of implementation security in quantum key distribution (QKD) refers to the difficulty of meeting the requirements of mathematical security proofs in real‐life QKD systems. Here, a succint review is provided on this topic, focusing on discrete‐
Víctor Zapatero +2 more
semanticscholar +1 more source
1002 km twin-field quantum key distribution with finite-key analysis [PDF]
Quantum Frontiers, 2023 Quantum key distribution (QKD) holds the potential to establish secure keys over long distances. The distance of point-to-point QKD secure key distribution is primarily impeded by the transmission loss inherent to the channel.
Yang Liu +18 more
semanticscholar +1 more source
A hybrid integrated quantum key distribution transceiver chip [PDF]
npj Quantum Information, 2023 Quantum photonic technologies, such as quantum key distribution, are already benefiting greatly from the rise of integrated photonics. However, the flexibility in design of these systems is often restricted by the properties of the integration material ...
J. Dolphin +5 more
semanticscholar +1 more source
No Signaling and Quantum Key Distribution [PDF]
Physical Review Letters, 2005 Standard quantum key distribution protocols are provably secure against eavesdropping attacks, if quantum theory is correct. It is theoretically interesting to know if we need to assume the validity of quantum theory to prove the security of quantum key distribution, or whether its security can be based on other physical principles.
Barrett, Jonathan +2 more
openaire +3 more sources
Security of quantum key distribution from generalised entropy accumulation. [PDF]
Nat Commun, 2023 The goal of quantum key distribution (QKD) is to establish a secure key between two parties connected by an insecure quantum channel. To use a QKD protocol in practice, one has to prove that a finite size key is secure against general attacks: no matter ...
Metger T, Renner R.
europepmc +3 more sources
Quantum and Semi–Quantum key Distribution in Networks
International Journal of Theoretical Physics, 2023 In this paper, we utilize the potential offered by multidimensional separable states (MSS) for secure and simultaneous distributions of keys in a layered network. We present protocols for both quantum and semi-quantum key distribution and discuss their robustness against various eavesdropping strategies. We provide a procedure to identify the requisite
Bala, Rajni +2 more
openaire +2 more sources
Security of device-independent quantum key distribution protocols: a review [PDF]
Quantum, 2022 Device-independent quantum key distribution (DI-QKD) is often seen as the ultimate key exchange protocol in terms of security, as it can be performed securely with uncharacterised black-box devices.
I. W. Primaatmaja +5 more
semanticscholar +1 more source
Chip-based quantum key distribution
AAPPS Bulletin, 2021 Quantum key distribution is a matured quantum science and technology. Over the last 20 years, there has been substantial research and development in this area.
Leong-Chuan Kwek +6 more
doaj +1 more source