Results 1 to 10 of about 385,037 (330)
Communication Enhancement through Quantum Coherent Control of N Channels in an Indefinite Causal-Order Scenario [PDF]
Entropy, 2019 In quantum Shannon theory, transmission of information is enhanced by quantum features. Up to very recently, the trajectories of transmission remained fully classical.
Lorenzo M Procopio +2 more
exaly +2 more sources
Special Matrices, 2015 In this paper we characterize Moore-Penrose inverses of Gram matrices leaving a cone invariant in an indefinite inner product space using the indefinite matrix multiplication. This characterization includes the acuteness (or obtuseness) of certain closed
Appi Reddy K., Kurmayya T.
doaj +4 more sources
Connecting processes with indefinite causal order and multi-time quantum states [PDF]
New Journal of Physics, 2017 Recently, the possible existence of quantum processes with indefinite causal order has been extensively discussed, in particular using the formalism of process matrices. Here we give a new perspective on this question, by establishing a direct connection
Ralph Silva +5 more
doaj +2 more sources
Indefinite Core Vector Machine
Pattern Recognition, 2017 The recently proposed Krĕin space Support Vector Machine (KSVM) is an efficient classifier for indefinite learning problems, but with quadratic to cubic complexity and a non-sparse decision function. In this paper a Krĕin space Core Vector Machine (iCVM)
Frank-Michael Schleif, Peter Tino
exaly +2 more sources
Experimental super-Heisenberg quantum metrology with indefinite gate order [PDF]
Nature Physics, 2023 The precision of quantum metrology is widely believed to be restricted by the Heisenberg limit, corresponding to a root mean square error that is inversely proportional to the number of independent processes probed in an experiment, N . In the past, some
P. Yin +13 more
semanticscholar +1 more source
Common Sense and Common Disease. The Pandemic and the Expansion of the Non-real [PDF]
Phainomena, 2021 The starting point of this article is the intersection of two global phenomena—the pandemic and the internet. The pandemic and its possible social consequences are viewed from the perspective of two differences that constitute the human world: the ...
Victor Molchanov
doaj +1 more source
Device-independent certification of indefinite causal order in the quantum switch [PDF]
Nature Communications, 2022 Quantum theory is compatible with scenarios in which the order of operations is indefinite. Experimental investigations of such scenarios, all of which have been based on a process known as the quantum switch, have provided demonstrations of indefinite ...
Tein van der Lugt +2 more
semanticscholar +1 more source
Noisy quantum metrology with the assistance of indefinite causal order [PDF]
, 2021 A generic qubit unitary operator affected by depolarizing noise is duplicated and inserted in a quantum switch process realizing a superposition of causal orders. The characterization of the resulting switched quantum channel is worked out for its action
F. Chapeau-Blondeau
semanticscholar +1 more source
Approach for the Management of Indefinite-for-neoplasia Lesions Detected on Gastric Mucosal Biopsy [PDF]
The Korean Journal of Helicobacter and Upper Gastrointestinal Research, 2023 Indefinite-for-neoplasia is an expression used to describe lesions in which carcinoma or dysplasia cannot be clearly and conclusively established via biopsy.
Dae Gon Ryu, Cheol Woong Choi
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Quantum reference frames for an indefinite metric [PDF]
Communications Physics, 2021 The current theories of quantum physics and general relativity on their own do not allow us to study situations in which the gravitational source is quantum.
Anne-Catherine de la Hamette +3 more
semanticscholar +1 more source