Results 1 to 10 of about 1,029,951 (239)

Mode-pairing quantum key distribution [PDF]

Nature Communications, 2022
Measurement-device-independent QKD schemes suffer from a trade-off between ease of implementation (avoiding the need for global phase locking) and high rates (quadratic improvement in rate).
Pei Zeng, Hongyi Zhou, Weijie Wu, Xiongfeng Ma   +3 more
doaj   +2 more sources

High-rate intercity quantum key distribution with a semiconductor single-photon source. [PDF]

Light Sci Appl, 2023
Quantum key distribution (QKD) enables the transmission of information that is secure against general attacks by eavesdroppers. The use of on-demand quantum light sources in QKD protocols is expected to help improve security and maximum tolerable loss ...
Yang J, Jiang Z, Benthin F, Hanel J, Fandrich T, Joos R, Bauer S, Kolatschek S, Hreibi A, Rugeramigabo EP, Jetter M, Portalupi SL, Zopf M, Michler P, Kück S, Ding F.   +15 more
europepmc   +3 more sources

Decoherence-assisted quantum key distribution [PDF]

Scientific Reports
We put forward and demonstrate a controllable decoherence-assisted quantum key distribution scheme. The protocol is based on the possibility of introducing controllable decoherence to polarization qubits using the spatial degree of freedom of light.
Daniel R. Sabogal, Daniel F. Urrego, Juan R. Álvarez, Andrés F. Herrera, Juan P. Torres, Alejandra Valencia   +5 more
doaj   +2 more sources

Quantum key distribution implemented with d-level time-bin entangled photons. [PDF]

Nat Commun
High-dimensional photon states (qudits) are pivotal to enhance the information capacity, noise robustness, and data rates of quantum communications.
Yu H, Sciara S, Chemnitz M, Montaut N, Crockett B, Fischer B, Helsten R, Wetzel B, Goebel TA, Krämer RG, Little BE, Chu ST, Nolte S, Wang Z, Azaña J, Munro WJ, Moss DJ, Morandotti R.   +17 more
europepmc   +2 more sources

Security of Quantum Key Distribution

IEEE Access, 2016
The security issues facing quantum key distribution (QKD) are explained, herein focusing on those issues that are cryptographic and information theoretic in nature and not those based on physics. The problem of security criteria is addressed.
Horace P. Yuen
doaj   +3 more sources

Cryptographic security of quantum key distribution [PDF]

, 2014
This work is intended as an introduction to cryptographic security and a motivation for the widely used Quantum Key Distribution (QKD) security definition.
Portmann, Christopher, Renner, Renato
core   +3 more sources

Quantum key distribution without sending a quantum signal [PDF]

New Journal of Physics, 2015
Quantum Key Distribution is a quantum communication technique in which random numbers are encoded on quantum systems, usually photons, and sent from one party, Alice, to another, Bob. Using the data sent via the quantum signals, supplemented by classical
T C Ralph, N Walk
doaj   +3 more sources

Practical high-dimensional quantum key distribution protocol over deployed multicore fiber. [PDF]

Nat Commun
Quantum key distribution (QKD) is a secure communication scheme for sharing symmetric cryptographic keys based on the laws of quantum physics, and is considered a key player in the realm of cyber-security.
Zahidy M, Ribezzo D, De Lazzari C, Vagniluca I, Biagi N, Müller R, Occhipinti T, Oxenløwe LK, Galili M, Hayashi T, Cassioli D, Mecozzi A, Antonelli C, Zavatta A, Bacco D.   +14 more
europepmc   +2 more sources

Secure quantum key distribution with realistic devices

Reviews of Modern Physics, 2020
Some years ago quantum hacking became popular: devices implementing the unbreakable quantum cryptography were shown to have imperfections which could be exploited by attackers.
Feihu Xu, Xiongfeng Ma, Hoi-Kwong Lo
exaly   +2 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