Results 81 to 90 of about 4,229,081 (350)
Moderate Deviation Analysis for Classical-Quantum Channels and Quantum Hypothesis Testing [PDF]
IEEE Transactions on Information Theory, 2017 In this paper, we study the tradeoffs between the error probabilities of classical-quantum channels and the blocklength $n$ when the transmission rates approach the channel capacity at a rate lower than $1/\sqrt {n}$ , a research topic known as ...
Hao-Chung Cheng, Min-Hsiu Hsieh
semanticscholar +1 more source
, 2011 We consider quantum channels with one sender and two receivers, used in several different ways for the simultaneous transmission of independent messages.
Devetak, Igor +2 more
core +1 more source
Optimal measurement preserving qubit channels
New Journal of Physics, 2020 We consider the problem of discriminating qubit states that are sent over a quantum channel and derive a necessary and sufficient condition for an optimal measurement to be preserved by the channel.
Spiros Kechrimparis, Joonwoo Bae
doaj +1 more source
Achieving Large and Anisotropic Spin‐Mediated Thermal Transport in Textured Quantum Magnets
Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.An advanced solvent‐cast cold pressing method is developed to synthesize highly textured quantum magnets. By aligning spin chains in Ca2CuO3 perpendicular to the pressing direction, a spin‐mediated thermal conductivity of 10 ± 1 W m⁻¹ K⁻¹ is achieved, the highest reported for polycrystalline quantum materials.
Shucheng Guo +6 more
wiley +1 more source
Moderate Deviation Analysis for Classical Communication over Quantum Channels [PDF]
Communications in Mathematical Physics, 2017 We analyse families of codes for classical data transmission over quantum channels that have both a vanishing probability of error and a code rate approaching capacity as the code length increases.
Christopher T. Chubb +2 more
semanticscholar +1 more source
Activation of zero-error classical capacity in low-dimensional quantum systems [PDF]
Phys. Rev. A 97, 062314 (2018), 2018 Channel capacities of quantum channels can be nonadditive even if one of two quantum channels has no channel capacity. We call this phenomenon \emph{activation} of the channel capacity. In this paper, we show that when we use a quantum channel on a qubit system, only a noiseless qubit channel can generate the activation of the zero-error classical ...
arxiv +1 more source
Structurally Colored Physically Unclonable Functions with Ultra‐Rich and Stable Encoding Capacity
Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.This study reports a design strategy for generating bright‐field resolvable physically unclonable functions with extremely rich encoding capacity coupled with outstanding thermal and chemical stability. The optical response emerges from thickness‐dependent structural color formation in ZnO features, which are fabricated by physical vapor deposition ...
Abidin Esidir +8 more
wiley +1 more source
Converse Bounds for Private Communication Over Quantum Channels [PDF]
IEEE Transactions on Information Theory, 2016 This paper establishes several converse bounds on the private transmission capabilities of a quantum channel. The main conceptual development builds firmly on the notion of a private state, which is a powerful, uniquely quantum method for simplifying the
M. Wilde, M. Tomamichel, M. Berta
semanticscholar +1 more source
, 2008 Tensor networks representations of many-body quantum systems can be described in terms of quantum channels. We focus on channels associated with the Multi-scale Entanglement Renormalization Ansatz (MERA) tensor network that has been recently introduced ...
I. Bengstsson +4 more
core +1 more source
Local Channels under Decomposition of Quantum Gates in Bipartite Systems
Journal of Mathematics, 2023 For a bipartite quantum system with Hilbert space Hm⊗Hn, this paper considers a quantum channel ϕ from the system to itself which preserves the set of separable states.
Yihui Lao, Pei Wang, Shanli Liao
doaj +1 more source