Results 31 to 40 of about 362,057 (331)

Applications of position-based coding to classical communication over quantum channels [PDF]

open access: yes, 2017
Recently, a coding technique called position-based coding has been used to establish achievability statements for various kinds of classical communication protocols that use quantum channels.
Qi, Haoyu, Wang, Qingle, Wilde, Mark M.
core   +4 more sources

On the equivalence between squeezing and entanglement potential for two-mode Gaussian states

open access: yesScientific Reports, 2023
The maximum amount of entanglement achievable under passive transformations by continuous-variable states is called the entanglement potential. Recent work has demonstrated that the entanglement potential is upper-bounded by a simple function of the ...
Bohan Li   +5 more
doaj   +1 more source

The non-local content of quantum operations [PDF]

open access: yes, 2000
We show that quantum operations on multi-particle systems have a non-local content; this mirrors the non-local content of quantum states. We introduce a general framework for discussing the non-local content of quantum operations, and give a number of ...
Collins, Daniel   +2 more
core   +2 more sources

Experimental optical phase measurement approaching the exact Heisenberg limit

open access: yesNature Communications, 2018
Measurements of an unknown optical phase have not yet been performed with the ultimate precision, i.e. saturating the Heisenberg limit. Here, Daryanoosh et al.
Shakib Daryanoosh   +4 more
doaj   +1 more source

Quantum Communications

open access: yesAdvanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF), 2018
Quantum Communication is the art of transferring an unknown quantum state from one location, Alice, to a distant one, Bob. This is a non-trivial task because of the quantum no-cloning theorem which prevents one from merely using only classical means.
openaire   +2 more sources

Experimental Implementation of Enhanced Security Coherent One-Way Quantum Key Distribution

open access: yesIEEE Access
Coherent One-Way (COW) is a simple and widely utilized quantum key distribution (QKD) protocol, favored in both experimental and commercial applications. In this paper, we compare the information that an eavesdropper, Eve, can acquire in both the 2-decoy
Amirhosein Dadahhani   +6 more
doaj   +1 more source

Hierarchical quantum communication

open access: yes, 2013
A general approach to study the hierarchical quantum information splitting (HQIS) is proposed and the same is used to systematically investigate the possibility of realizing HQIS using different classes of 4-qubit entangled states that are not connected ...
Pathak, Anirban, Shukla, Chitra
core   +1 more source

Polar codes in network quantum information theory [PDF]

open access: yes, 2016
Polar coding is a method for communication over noisy classical channels which is provably capacity-achieving and has an efficient encoding and decoding. Recently, this method has been generalized to the realm of quantum information processing, for tasks
Hirche, Christoph   +2 more
core   +3 more sources

Stealth Communication: Zero-Power Classical Communication, Zero-Quantum Quantum Communication and Environmental-Noise Communication

open access: yes, 2005
An alternative physical way of communication, communication by the inherent background noise, is proposed which does not need net energy transfer in the information channel.
Kish, Laszlo B.
core   +2 more sources

Observation of quantum fingerprinting beating the classical limit [PDF]

open access: yes, 2016
Quantum communication has historically been at the forefront of advancements, from fundamental tests of quantum physics to utilizing the quantum-mechanical properties of physical systems for practical applications.
Chen, Si-Jing   +12 more
core   +2 more sources

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