Results 11 to 20 of about 4,417,507 (366)
Algorithmic complexity of quantum capacity [PDF]
Quantum Information Processing, 2016 We analyze the notion of quantum capacity from the perspective of algorithmic (descriptive) complexity. To this end, we resort to the concept of semi-computability in order to describe quantum states and quantum channel maps.
Samad Khabbazi Oskouei, S. Mancini
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Algorithmic superactivation of asymptotic quantum capacity of zero-capacity quantum channels [PDF]
Information Sciences, 2012 The superactivation of zero-capacity quantum channels makes it possible to use two zero-capacity quantum channels with a positive joint capacity for their output. Currently, we have no theoretical background to describe all possible combinations of superactive zero-capacity channels; hence, there may be many other possible combinations. In practice, to
L. Gyongyosi, S. Imre
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Quantum Capacity under Adversarial Quantum Noise: Arbitrarily Varying Quantum Channels [PDF]
Communications in Mathematical Physics, 2012 We investigate entanglement transmission over an unknown channel in the presence of a third party (called the adversary), which is enabled to choose the channel from a given set of memoryless but non-stationary channels without informing the legitimate ...
R. Ahlswede +3 more
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Capacity theorems for quantum multiple-access channels: classical-quantum and quantum-quantum capacity regions [PDF]
IEEE Transactions on Information Theory, 2008 We consider quantum channels with two senders and one receiver. For an arbitrary such channel, we give multi-letter characterizations of two different two-dimensional capacity regions. The first region is comprised of the rates at which it is possible for one sender to send classical information, while the other sends quantum information.
Yard, Jon +2 more
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Quantum rebound capacity [PDF]
Physical Review A, 2019 v2: published version, 7 pages, 2 figures, see companion paper at arXiv:1703 ...
Siddhartha Das, Mark M. Wilde
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Quantum capacity analysis of multi-level amplitude damping channels
Communications Physics, 2021 Estimating the capacity of quantum channels is relevant to understand at which rate quantum information can be exchanged. Here, the authors introduce multi-level amplitude damping channels that generalize the qubit amplitude damping noise model, analyse ...
Stefano Chessa, Vittorio Giovannetti
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Collective heat capacity for quantum thermometry and quantum engine enhancements [PDF]
New Journal of Physics, 2020 The performances of quantum thermometry in thermal equilibrium together with the output power of certain class of quantum engines share a common characteristic: both are determined by the heat capacity of the probe or working medium.
C L Latune, I Sinayskiy, F Petruccione
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Quantum Enigma Machines and the Locking Capacity of a Quantum Channel [PDF]
Physical Review X, 2014 The locking effect is a phenomenon that is unique to quantum information theory and represents one of the strongest separations between the classical and quantum theories of information.
Saikat Guha +7 more
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Continuity of Quantum Channel Capacities [PDF]
Communications in Mathematical Physics, 2009 We prove that a broad array of capacities of a quantum channel are continuous. That is, two channels that are close with respect to the diamond norm have correspondingly similar communication capabilities. We first show that the classical capacity, quantum capacity, and private classical capacity are continuous, with the variation on arguments epsilon ...
Debbie Leung, Graeme Smith
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The quantum dynamic capacity formula of a quantum channel [PDF]
Quantum Information Processing, 2011 The dynamic capacity theorem characterizes the reliable communication rates of a quantum channel when combined with the noiseless resources of classical communication, quantum communication, and entanglement. In prior work, we proved the converse part of this theorem by making contact with many previous results in the quantum Shannon theory literature.
Min-Hsiu Hsieh, Mark M. Wilde
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