Results 111 to 120 of about 3,875,923 (367)
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
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
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Positivity and Nonadditivity of Quantum Capacities Using Generalized Erasure Channels [PDF]
, 2021 Vikesh Siddhu, Robert B. Griffiths
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, 2019 In quantum Shannon theory, transmission of information is enhanced by quantum features. Up to very recently, the trajectories of transmission remained fully classical.
Belabas, Nadia +4 more
core +2 more sources
Quantum channel construction with circuit quantum electrodynamics [PDF]
Physical Review B, 2017 16 pages, 8 ...
Shen, Chao +7 more
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Advanced Functional Materials, EarlyView.A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian +6 more
wiley +1 more source
Secure quantum signatures using insecure quantum channels [PDF]
Physical Review A, 2016 Digital signatures are widely used in modern communication to guarantee authenticity and transferability of messages, The security of currently used classical schemes relies on computational assumptions. We present a quantum signature scheme that does not require trusted quantum channels.
Amiri, Ryan +3 more
openaire +4 more sources
Synchrotron Radiation for Quantum Technology
Advanced Functional Materials, EarlyView.Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader +10 more
wiley +1 more source
Capacities of Grassmann channels
, 2011 A new class of quantum channels called Grassmann channels is introduced and their classical and quantum capacity is calculated. The channel class appears in a study of the two-mode squeezing operator constructed from operators satisfying the fermionic ...
Barnett S. M. +9 more
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Quantum interference channels [PDF]
2011 49th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2011 10 pages, 2 figures, submitted to the 2011 Allerton Conference on Communication, Control, and Computing; v3 has a proof for a two-sender quantum simultaneous decoder and as a result, we get the capacity for channels with strong ...
Savov, Ivan +4 more
openaire +2 more sources