Results 51 to 60 of about 4,287,757 (400)
Fundamental limits to quantum channel discrimination [PDF]
npj Quantum Information, 2018 What is the ultimate performance for discriminating two arbitrary quantum channels acting on a finite-dimensional Hilbert space? Here we address this basic question by deriving a general and fundamental lower bound.
S. Pirandola +3 more
semanticscholar +1 more source
Quantum Channels with Quantum Group Symmetry [PDF]
Communications in Mathematical Physics, 2022 In this paper we will demonstrate that any compact quantum group can be used as symmetry groups for quantum channels, which leads us to the concept of covariant channels. We, then, unearth the structure of the convex set of covariant channels by identifying all extreme points under the assumption of multiplicity-free condition for the associated fusion
Hun Hee Lee, Sang-Gyun Youn
openaire +2 more sources
Probabilistic Teleportation via Quantum Channel with Partial Information
Entropy, 2015 Two novel schemes are proposed to teleport an unknown two-level quantum state probabilistically when the sender and the receiver only have partial information about the quantum channel, respectively.
Desheng Liu, Zhiping Huang, Xiaojun Guo
doaj +1 more source
Zero-Error Coding via Classical and Quantum Channels in Sensor Networks
Sensors, 2019 Today’s sensor networks need robustness, security and efficiency with a high level of assurance. Error correction is an effective communicational technique that plays a critical role in maintaining robustness in informational transmission.
Wenbin Yu +6 more
doaj +1 more source
On the Second-Order Asymptotics for Entanglement-Assisted Communication [PDF]
, 2016 The entanglement-assisted classical capacity of a quantum channel is known to provide the formal quantum generalization of Shannon's classical channel capacity theorem, in the sense that it admits a single-letter characterization in terms of the quantum ...
Datta, Nilanjana +2 more
core +3 more sources
Entanglement cost and quantum channel simulation [PDF]
Physical Review A, 2018 This paper proposes a revised definition for the entanglement cost of a quantum channel $\mathcal{N}$. In particular, it is defined here to be the smallest rate at which entanglement is required, in addition to free classical communication, in order to ...
M. Wilde
semanticscholar +1 more source
Entropic bounds on coding for noisy quantum channels [PDF]
, 1998 In analogy with its classical counterpart, a noisy quantum channel is characterized by a loss, a quantity that depends on the channel input and the quantum operation performed by the channel.
A. Ekert +29 more
core +2 more sources
Repeatable quantum memory channels [PDF]
Phys. Rev. A 78, 052114 (2008), 2008 Within the framework of quantum memory channels we introduce the notion of repeatability of quantum channels. In particular, a quantum channel is called repeatable if there exist a memory device implementing the same channel on each individual input. We show that random unitary channels can be implemented in a repeatable fashion, whereas the nonunital ...
arxiv +1 more source
The capacity of black holes to transmit quantum information [PDF]
, 2014 We study the properties of the quantum information transmission channel that emerges from the quantum dynamics of particles interacting with a black hole horizon.
Adami, Christoph, Bradler, Kamil
core +3 more sources
Dividing Quantum Channels [PDF]
Communications in Mathematical Physics, 2008 welcome (23 pages); references and comments ...
Michael M. Wolf, J. Ignacio Cirac
openaire +4 more sources