Results 31 to 40 of about 513,576 (325)

The Case for Quantum Key Distribution [PDF]

open access: yes, 2009
Quantum key distribution (QKD) promises secure key agreement by using quantum mechanical systems. We argue that QKD will be an important part of future cryptographic infrastructures.
A.R. Dixon   +20 more
core   +8 more sources

Noiseless Linear Amplifiers in Entanglement-Based Continuous-Variable Quantum Key Distribution

open access: yesEntropy, 2015
We propose a method to improve the performance of two entanglement-based continuous-variable quantum key distribution protocols using noiseless linear amplifiers. The two entanglement-based schemes consist of an entanglement distribution protocol with an
Yichen Zhang   +6 more
doaj   +1 more source

Receiver-device-independent quantum key distribution protocols

open access: yesNew Journal of Physics, 2022
We discuss quantum key distribution protocols and their security analysis, considering a receiver-device-independent (RDI) model. The sender’s (Alice’s) device is partially characterized, in the sense that we assume bounds on the overlaps of the prepared
Marie Ioannou   +5 more
doaj   +1 more source

Practical challenges in quantum key distribution [PDF]

open access: yes, 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   +3 more
core   +3 more sources

Deterministic and Efficient Quantum Key Distribution Using Entanglement Parity Bits and Ancillary Qubits

open access: yesIEEE Access, 2017
In this paper, we propose an efficient and deterministic quantum key distribution protocol for establishing a secret key between two untrusted users. In this protocol, a secret key is distributed to a sender and a receiver who share entangled states with
Muneer Alshowkan, Khaled M. Elleithy
doaj   +1 more source

Experimental underwater quantum key distribution

open access: yesOptics Express, 2021
In recent years, the feasibility of quantum key distribution (QKD) in a water channel has been verified by theory and experiment. Here, we present an experimental investigation of QKD and decoy-state QKD based on the BB84 protocol. The experiment was carried out in a 10 m water tank. The attenuation coefficient of tap water is 0.08/m, which is close to
Zhao Feng, Shangbin Li, Zhengyuan Xu
openaire   +2 more sources

Attacks against a Simplified Experimentally Feasible Semiquantum Key Distribution Protocol

open access: yesEntropy, 2018
A semiquantum key distribution (SQKD) protocol makes it possible for a quantum party and a classical party to generate a secret shared key. However, many existing SQKD protocols are not experimentally feasible in a secure way using current technology. An
Michel Boyer, Rotem Liss, Tal Mor
doaj   +1 more source

Quantum key distribution via quantum encryption

open access: yes, 2001
A quantum key distribution protocol based on quantum encryption is presented in this Brief Report. In this protocol, the previously shared Einstein-Podolsky-Rosen pairs act as the quantum key to encode and decode the classical cryptography key.
A. Cabello   +24 more
core   +1 more source

Free-Space Quantum Key Distribution

open access: yes, 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   +2 more
core   +1 more source

Quantum Key Distribution with Classical Bob [PDF]

open access: yes, 2007
Secure key distribution among two remote parties is impossible when both are classical, unless some unproven (and arguably unrealistic) computation-complexity assumptions are made, such as the difficulty of factorizing large numbers. On the other hand, a
C. A. Fuchs   +6 more
core   +2 more sources

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