Results 111 to 120 of about 4,229,081 (350)
Mixing doubly stochastic quantum channels with the completely depolarizing channel [PDF]
arXiv, 2008 It is proved that every doubly stochastic quantum channel that is properly averaged with the completely depolarizing channel can be written as a convex combination of unitary channels. As a consequence, we find that the collection of channels expressible as convex combinations of unitary channels has non-zero Borel measure within the space of doubly ...
arxiv
Advanced Functional Materials, EarlyView.The plasma edge of transparent conducting oxide SrNbO3 shifts from ∼2 eV in the visible range to 1.37 eV in the near‐infrared region by off‐stoichiometry using the vacancy sites as quasi‐substitutional virtual elements. This work advances the stoichiometry engineering of perovskite oxides using oxide molecular beam epitaxy, allowing synthesis beyond ...
Jasnamol Palakkal +11 more
wiley +1 more source
Nonadditivity effects in classical capacities of quantum multiple-access channels
, 2008 We study classical capacities of quantum multi-access channels in geometric terms revealing breaking of additivity of Holevo-like capacity. This effect is purely quantum since, as one points out, any classical multi-access channels have their regions ...
A. E. Allahverdyan +12 more
core +1 more source
Advanced Functional Materials, EarlyView.This work investigates modifying interfacial contacts in realizing giant‐performance semiconductor nanomembrane optoelectronics. Strategies, including surface reaction and buffer layer work‐function modulation, are explored to boost the Schottky barrier. An emerging material of YbOx is utilized for near‐ideal Ohmic contact.
Yibo Zhang +5 more
wiley +1 more source
Incompatibility of quantum channels [PDF]
, 2016 Two quantum channels are called compatible if they can be obtained as marginals from a single broadcasting channel; otherwise they are incompatible. We derive a characterization of the compatibility relation in terms of concatenation and conjugation, and
Teiko Heinosaari, T. Miyadera
semanticscholar +1 more source
Optimization and synchronization of programmable quantum communication channels
, 2018 Quantum applications transmit and receive data through quantum and classical communication channels. Channel capacity, the distance and the photon path between transmitting and receiving parties and the speed of the computation links play an essential ...
Dasari, Venkat R., Im, Mee Seong
core +1 more source
Control power of quantum channels is not multiplicative
New Journal of Physics, 2020 We construct a family of parallel channels for controlled quantum communication, and show that the control power of a quantum channel can become larger when it is combined with a zero control power channel.
Tie-jun Wang, Shohini Ghose
doaj +1 more source
Computational distinguishability of degradable and antidegradable channels [PDF]
Quant. Inf. Comp. 10 (2010) 735-746, 2009 A channel is degradable if there exists a second channel that maps the output state of the channel to the environment state. These channels satisfy the property that the output state contains more information about the input than the environment does.
arxiv
Advanced Functional Materials, EarlyView.This review synthesizes the evolution of radiative heat transfer, emphasizing the transition from far‐field to near‐field regimes. Traditional frameworks, such as Planck's law, are revisited alongside modern innovations like fluctuational electrodynamics. Applications span nanoscale thermal management, energy harvesting, and thermophotovoltaic systems.
Ambali Alade Odebowale +6 more
wiley +1 more source
Entanglement-enhanced quantum metrology in a noisy environment
, 2018 Quantum metrology overcomes standard precision limits and plays a central role in science and technology. Practically it is vulnerable to imperfections such as decoherence.
Bian, Zhihao +6 more
core +1 more source