Results 21 to 30 of about 5,471 (136)
Pretty good state transfer of entangled states through quantum spin chains
New Journal of Physics, 2014 The XX model with uniform couplings represents the most natural choice for quantum state transfer through spin chains. Given that it has long been established that single-qubit states cannot be transferred with perfect fidelity in this model, the notion ...
Rúben Sousa, Yasser Omar
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Optimal measurement-based feedback control for a single qubit: a candidate protocol
New Journal of Physics, 2014 Feedback control of quantum systems via continuous measurement involves complex nonlinear dynamics. Except in very special cases, even for a single qubit optimal feedback protocols are unknown.
Ashkan Balouchi, Kurt Jacobs
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Signal-based classical emulation of a universal quantum computer
New Journal of Physics, 2015 In this paper we present a novel approach to emulating a universal quantum computer with a classical system, one that uses a signal of bounded duration and amplitude to represent an arbitrary quantum state.
Brian R La Cour, Granville E Ott
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The Consumption of Reference Resources [PDF]
, 2008 Under the operational restriction of the U(1)-superselection rule, states that contain coherences between eigenstates of particle number constitute a resource.
Alexander Lvovsky +3 more
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Bohr against Bell: complementarity versus nonlocality
Open Physics, 2017 In this note we compare the views of Bohr (known as the Copenhagen interpretation of quantum mechanics) with the views of Bell: complementarity versus nonlocality.
Khrennikov Andrei
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Optimal state estimation for d-dimensional quantum systems [PDF]
, 1998 We establish a connection between optimal quantum cloning and optimal state estimation for d-dimensional quantum systems. In this way we derive an upper limit on the fidelity of state estimation for d-dimensional pure quantum states and, furthermore, for
Bruß +7 more
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Monotonic decrease of the quantum nonadditive divergence by projective measurements [PDF]
, 2003 Nonadditive (nonextensive) generalization of the quantum Kullback-Leibler divergence, termed the quantum q-divergence, is shown not to increase by projective measurements in an elementary manner.Comment: 10 pages, no figures.
Abe +27 more
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A geometric approach to quantum state separation
New Journal of Physics, 2015 Probabilistic quantum state transformations can be characterized by the degree of state separation they provide. This, in turn, sets limits on the success rate of these transformations. We consider optimum state separation of two known pure states in the
E Bagan +4 more
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Quasi-autonomous quantum thermal machines and quantum to classical energy flow
New Journal of Physics, 2016 There are both practical and foundational motivations to consider the thermodynamics of quantum systems at small scales. Here we address the issue of autonomous quantum thermal machines that are tailored to achieve some specific thermodynamic primitive ...
Max F Frenzel +2 more
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Psyche: A Journal of Entomology, Volume 2016, Issue 1, 2016., 2016 Over most of its range populations of the spittlebug Prosapia ignipectus (Fitch) (Hemiptera: Cercopidae) are monomorphic for black dorsal coloration. At the far northeastern margin of the species range in Maine, a cluster of populations is monomorphic for the presence of traverse orange dorsal lines against a black background. The narrow gap separating
Vinton Thompson +2 more
wiley +1 more source