Results 71 to 80 of about 1,075,816 (186)

Photonic quantum information processing [PDF]

open access: yesContemporary Physics, 2016
Information processing with light is ubiquitous, from communication, metrology and imaging to computing. When we consider light as a quantum mechanical object, new ways of information processing become possible. In this review I give an overview how quantum information processing can be implemented with single photons, and what hurdles still need to be
openaire   +3 more sources

Quantum information processing and composite quantum fields [PDF]

open access: yesJournal of High Energy Physics, 2019
Abstract Some beautiful identities involving hook contents of Young diagrams have been found in the field of quantum information processing, along with a combinatorial proof. We here give a representation theoretic proof of these identities and a number of generalizations.
Ramgoolam, S, Sedlak, M
openaire   +6 more sources

Causally nonseparable processes admitting a causal model

open access: yesNew Journal of Physics, 2016
A recent framework of quantum theory with no global causal order predicts the existence of ‘causally nonseparable’ processes. Some of these processes produce correlations incompatible with any causal order (they violate so-called ‘causal inequalities ...
Adrien Feix   +2 more
doaj   +1 more source

A classical appraisal of quantum definitions of non-Markovian dynamics

open access: yes, 2012
We consider the issue of non-Markovianity of a quantum dynamics starting from a comparison with the classical definition of Markovian process. We point to the fact that two sufficient but not necessary signatures of non-Markovianity of a classical ...
Bassano Vacchini   +10 more
core   +1 more source

Simplified quantum process tomography

open access: yesNew Journal of Physics, 2009
We propose and evaluate experimentally an approach to quantum process tomography that completely removes the scaling problem plaguing the standard approach. The key to this simplification is the incorporation of prior knowledge of the class of physical interactions involved in generating the dynamics, which reduces the problem to one of parameter ...
Branderhorst, M   +3 more
openaire   +3 more sources

Quantum information processing and relativistic quantum fields [PDF]

open access: yesClassical and Quantum Gravity, 2014
16 pages, 2 figures. Improved abstract and discussion of 'ideal' measurements.
Benincasa, Dionigi M. T.   +3 more
openaire   +2 more sources

Fourier Quantum Process Tomography

open access: yesnpj Quantum Information
The characterization of a quantum device is a crucial step in the development of quantum experiments. This is accomplished via Quantum Process Tomography, which combines the outcomes of different projective measurements to deliver a possible ...
Francesco Di Colandrea   +3 more
doaj   +1 more source

Quantum Gaussian process state: A kernel-inspired state with quantum support data

open access: yesPhysical Review Research, 2022
We introduce the quantum Gaussian process state, motivated via a statistical inference for the wave function supported by a data set of unentangled product states.
Yannic Rath, George H. Booth
doaj   +1 more source

Bessel Process and Conformal Quantum Mechanics

open access: yes, 2009
Different aspects of the connection between the Bessel process and the conformal quantum mechanics (CQM) are discussed. The meaning of the possible generalizations of both models is investigated with respect to the other model, including self adjoint ...
A.M. Essin   +47 more
core   +1 more source

Quantum–enhanced information processing

open access: yesPhilosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2000
Summary: Information is stored, transmitted and processed always by physical means. Thus the concept of information and computation can be properly formulated only in the context of a physical theory and the study of information processing requires experimentation.
M, Mosca, R, Jozsa, A, Steane, A, Ekert
openaire   +3 more sources

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