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Quantum Capacities of Bosonic Channels [PDF]

open access: yes, 2006
We investigate the capacity of bosonic quantum channels for the transmission of quantum information. Achievable rates are determined from measurable moments of the channel by showing that every channel can asymptotically simulate a Gaussian channel which
A. S. Holevo   +5 more
core   +2 more sources

Classical -Quantum Multiple Access Channel with Secrecy Constraint: One-shot Rate Region

open access: yesInternational Journal of Information and Communication Technology Research, 2020
In this paper, we aim to study a -user quantum multiple access wiretap channel with an arbitrary number of wiretappers under one-shot setting. In this regard, we first introduce the general quantum multiple access wiretap channel and the simplified ...
Hadi Aghaee, Bahareh Akhbari
doaj  

Enhanced Estimation of a Noisy Quantum Channel Using Entanglement [PDF]

open access: yes, 2001
We discuss the estimation of channel parameters for a noisy quantum channel - the so-called Pauli channel - using finite resources. It turns out that prior entanglement considerably enhances the fidelity of the estimation when we compare it to an ...
Cirone, Markus A.   +3 more
core   +2 more sources

Quantum channel learning

open access: yesPhysical Review E
The unitary learning from arXiv:2405.10263 is generalized to density matrices and quantum channels.
Mikhail Gennadievich Belov   +3 more
openaire   +3 more sources

Quantum Markov channels for qubits [PDF]

open access: yesPhysical Review A, 2003
18 pages, 4 ...
Daffer, Sonja   +2 more
openaire   +3 more sources

Quantum circuit design for accurate simulation of qudit channels

open access: yesNew Journal of Physics, 2015
We construct a classical algorithm that designs quantum circuits for algorithmic quantum simulation of arbitrary qudit channels on fault-tolerant quantum computers within a pre-specified error tolerance with respect to diamond-norm distance.
Dong-Sheng Wang, Barry C Sanders
doaj   +1 more source

Entanglement generation with a quantum channel and a shared state [PDF]

open access: yes, 2010
We introduce a new protocol, the channel-state coding protocol, to quantum Shannon theory. This protocol generates entanglement between a sender and receiver by coding for a noisy quantum channel with the aid of a noisy shared state.
Hsieh, Min-Hsiu, Wilde, Mark M.
core   +3 more sources

The Structure and Quantum Capacity of a Partially Degradable Quantum Channel

open access: yesIEEE Access, 2014
The quantum capacity of degradable quantum channels has been proven to be additive. On the other hand, there is no general rule for the behavior of quantum capacity for antidegradable quantum channels.
Laszlo Gyongyosi
doaj   +1 more source

Dynamic model of an optical channel for a quantum key distribution system in MATLAB Simulink

open access: yesИзвестия Томского политехнического университета: Промышленная кибернетика
Relevance. Improving post-processing algorithms for key information transmitted via optical channels, as well as planning the architecture of quantum networks require realistic data.
Kirill I. Chukov   +3 more
doaj   +1 more source

Quantum channel capacities: Multiparty communication [PDF]

open access: yesPhysical Review A, 2006
1 ...
Demianowicz, Maciej, Horodecki, Pawel
openaire   +2 more sources

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