Results 31 to 40 of about 1,260,747 (157)

Quantum Kolmogorov Complexity and Quantum Key Distribution

, 2009
We discuss the Bennett-Brassard 1984 (BB84) quantum key distribution protocol in the light of quantum algorithmic information. While Shannon's information theory needs a probability to define a notion of information, algorithmic information theory does ...
A. N. Kolmogorov, C. H. Bennett, D. Deutsch, D. Mayers, G. Chaitin, Hideki Imai, K. Svozil, M. Li, P. Gacs, Takayuki Miyadera   +9 more
core   +1 more source

Quantum Key Distribution Using Quantum Faraday Rotators

, 2007
We propose a new quantum key distribution (QKD) protocol based on the fully quantum mechanical states of the Faraday rotators. The protocol is unconditionally secure against collective attacks for multi-photon source up to two photons on a noisy ...
Bae J Acin A, Bennett C H, Bennett C H Brassard G, Mahn-Soo Choi, Renner R, Renner R, Taeseung Choi   +6 more
core   +1 more source

Comment on "Quantum dense key distribution" [PDF]

, 2004
In this Comment we question the security of recently proposed by Degiovanni et al. [Phys. Rev. A 69 (2004) 032310] scheme of quantum dense key distribution.
arxiv   +1 more source

Simple security proofs for continuous-variable quantum key distribution with intensity fluctuating sources [PDF]

npj Quantum Inf 7, 150 (2021), 2019
Quantum Key Distribution (QKD) in principle offers unconditional security based on the laws of physics. Continuous variable (CV) quantum key distribution has the potential for high-key-rate and low-cost implementations using standard telecom components.
arxiv   +1 more source

Free-Space Quantum Key Distribution

, 2016
Based on the firm laws of physics rather than unproven foundations of mathematical complexity, quantum cryptography provides a radically different solution for encryption and promises unconditional security.
Carrasco-Casado, Alberto, Denisenko, Natalia, Fernández, Verónica   +2 more
core   +1 more source

Detector decoy quantum key distribution

, 2008
Photon number resolving detectors can enhance the performance of many practical quantum cryptographic setups. In this paper, we employ a simple method to estimate the statistics provided by such a photon number resolving detector using only a threshold ...
Bazaraa M S, Bennett C H, Brassard G Mor T Sanders B C, Brida G Genovese M Gramegna G Meda A Olivares S Paris M G A Piacentini F Predazzi E Traina P, Dušek M, Erven C Couteau C Laflamme R Weihs G, Fung C H F Tamaki K Qi B Lo H K Ma X, Gottesman D, Koashi M, Koashi M Adachi Y Yamamoto T Imoto N, Ling A Peloso M P Marcikic I Scarani V Lamas-Linares A Kurtsiefer C, Lo H K, Lundeen J S Feito A Coldenstrodt-Ronge H Pregnell K L Silberhorn C Ralph T C Eisert J Plenio M B Walmsley I A, Lydersen L Skaar J, Marcos Curty, Mayers D, Norbert Lütkenhaus, Peng X Jiang H Xu B Ma X Guo H, Qi B, Ribordy G, Scarani V Bechmann-Pasquinucci H Cerf N J Dušek M Lütkenhaus N Peev M, Stucki D, Tamaki K Lütkenhaus N Koashi M Batuwantudawe J, Tobias Moroder, Tsurumaru T Tamaki K, Ursin R   +25 more
core   +1 more source

Quantum repeaters and quantum key distribution: analysis of secret key rates

, 2013
We analyze various prominent quantum repeater protocols in the context of long-distance quantum key distribution. These protocols are the original quantum repeater proposal by Briegel, D\"ur, Cirac and Zoller, the so-called hybrid quantum repeater using ...
C. H. Bennett, Dagmar Bruß, Hermann Kampermann, I. Wolfram Research, M. Ben-Or, M. Razavi, Nadja K. Bernardes, P. Kok, Peter van Loock, R. Renner, Silvestre Abruzzo, Sylvia Bratzik, V. Tatarskĭ   +12 more
core   +1 more source

Quantum key distribution with 2-bit quantum codes

, 2004
We propose a prepare-and-measure scheme for quantum key distribution with 2-bit quantum codes. The protocol is unconditionally secure under whatever type of intercept-and-resend attack. Given the symmetric and independent errors to the transmitted qubits,
A. M. Steane, C. H. Bennett, C. H. Bennett, D. Mayers, E. Biham, Xiang-Bin Wang   +5 more
core   +1 more source

Practical challenges in quantum key distribution

, 2016
Quantum key distribution (QKD) promises unconditional security in data communication and is currently being deployed in commercial applications. Nonetheless, before QKD can be widely adopted, it faces a number of important challenges such as secret key ...
Diamanti, Eleni, Lo, Hoi-Kwong, Qi, Bing, Yuan, Zhiliang   +3 more
core   +1 more source

A note on quantum safe symmetric key growing [PDF]

arXiv, 2017
Quantum key distribution is a cryptographic primitive for the distribution of symmetric encryption keys between two parties that possess a pre-shared secret. Since the pre-shared secret is a requirement, quantum key distribution may be viewed as a key growing protocol. We note that the use of pre-shared secrets coupled with access to randomness beacons
arxiv