Results 91 to 100 of about 4,229,081 (350)
A simple quantum channel having superadditivity of channel capacity [PDF]
Phys.Lett. A236 (1997) 1, 1997 When classical information is sent through a quantum channel of nonorthogonal states, there is a possibility that transmittable classical information exceeds a channel capacity in a single use of the initial channel by extending it into multi-product channel.
arxiv +1 more source
Universal Superconductivity in FeTe and All‐Iron‐Based Ferromagnetic Superconductor Heterostructures
Advanced Functional Materials, EarlyView.The first all‐iron‐based ferromagnetic superconductor heterostructures with high‐temperature superconductivity and strong ferromagnetism aredemonstrated. From this, it is discovered that FeTe becomes universallysuperconducting with a minute level of cationic impurities through doping ordiffusion from neighboring layers, suggesting its ground state can ...
Hee Taek Yi +12 more
wiley +1 more source
Chaos in quantum channels [PDF]
, 2015 A bstractWe study chaos and scrambling in unitary channels by considering their entanglement properties as states. Using out-of-time-order correlation functions to diagnose chaos, we characterize the ability of a channel to process quantum information ...
P. Hosur +3 more
semanticscholar +1 more source
Atmospheric Quantum Channels with Weak and Strong Turbulence. [PDF]
Physical Review Letters, 2016 The free-space transfer of high-fidelity optical signals between remote locations has many applications, including both classical and quantum communication, precision navigation, clock synchronization, etc.
D. Vasylyev, A. Semenov, W. Vogel
semanticscholar +1 more source
An Infinite Sequence of Additive Channels: the Classical Capacity of Cloning Channels
, 2013 We introduce an infinite sequence of quantum channels for which the Holevo capacity is additive. The channel series is closely related to the quantum channels arising from universal quantum cloning machines. The additivity proof is motivated by a special
Bradler, Kamil
core +1 more source
Optimal asymptotic cloning machines
New Journal of Physics, 2014 We pose the question whether the asymptotic equivalence between quantum cloning and quantum state estimation, valid at the single-clone level, still holds when all clones are examined globally.
Giulio Chiribella, Yuxiang Yang
doaj +1 more source
IEEE Access, 2020 Quantum information is prone to suffer from errors caused by the so-called decoherence, which describes the loss in coherence of quantum states associated to their interactions with the surrounding environment.
Josu Etxezarreta Martinez +3 more
doaj +1 more source
Estimation of correlations and nonseparability in quantum channels via unitarity benchmarking
Physical Review Research, 2022 The ability to transfer quantum information between systems is a fundamental component of quantum technologies and leads to correlations within the global quantum process. However, correlation structures in quantum channels are less studied than those in
Matthew Girling +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This study demonstrates that in sputter‐deposited Tb3Fe5O12 (TbIG)/nonmagnetic metal (NM) heterostructures, the interfacial Dzyaloshinskii–Moriya Interaction (DMI) originates at the TbIG/NM interface. Furthermore, measurements suggest a significant interfacial DMI arising from a second non‐local interface, created by inserting a Cu spacer layer between
Stefano Fedel +6 more
wiley +1 more source
On Converse Bounds for Classical Communication Over Quantum Channels [PDF]
IEEE Transactions on Information Theory, 2017 We explore several new converse bounds for classical communication over quantum channels in both the one-shot and asymptotic regimes. First, we show that the Matthews-Wehner meta-converse bound for entanglement-assisted classical communication can be ...
Xin Wang, K. Fang, M. Tomamichel
semanticscholar +1 more source