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Fidelity and information in the quantum teleportation of continuous variables [PDF]
, 2000 Ideally, quantum teleportation should transfer a quantum state without distortion and without providing any information about that state. However, quantum teleportation of continuous electromagnetic field variables introduces additional noise, limiting ...
Furusawa, Akira +3 more
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Physical Review A, 2005 It is shown that generic N-party pure quantum states (with equidimensional subsystems) are uniquely determined by their reduced states of just over half the parties; in other words, all the information in almost all N-party pure states is in the set of reduced states of just over half the parties.
Jones, NS, Linden, N
openaire +3 more sources
Backward Evolving Quantum States [PDF]
, 2006 The basic concept of the two-state vector formalism, which is the time symmetric approach to quantum mechanics, is the backward evolving quantum state.
Aharonov Y +8 more
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“Classical” quantum states [PDF]
Physical Review A, 2009 We show that several classes of mixed quantum states in finite-dimensional Hilbert spaces which can be characterized as being, in some respect, 'most classical' can be described and analyzed in a unified way. Among the states we consider are separable states of distinguishable particles, uncorrelated states of indistinguishable fermions and bosons, as ...
Marek Kuś, Ingemar Bengtsson
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Shapes of quantum states [PDF]
Journal of Physics A: Mathematical and General, 2003 The shape space of k labelled points on a plane can be identified with the space of pure quantum states of dimension k-2. Hence, the machinery of quantum mechanics can be applied to the statistical analysis of planar configurations of points. Various correspondences between point configurations and quantum states, such as linear superposition as well ...
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Quantum state certification [PDF]
Proceedings of the 51st Annual ACM SIGACT Symposium on Theory of Computing, 2019 We consider the problem of quantum state certification, where one is given $n$ copies of an unknown $d$-dimensional quantum mixed state $ $, and one wants to test whether $ $ is equal to some known mixed state $ $ or else is $ $-far from $ $.
Costin Bădescu +2 more
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AIP Advances, 2023 We experimentally investigate trap-loss spectra of the cesium 6S1/2(F = 4) → 71P3/2 Rydberg transition by combining the cesium atomic magneto-optical trap with the narrow-linewidth, continuously tunable 318.6 nm ultraviolet laser. Specifically, the atoms
Xin Wang +8 more
doaj +1 more source
Qudit Quantum State Tomography [PDF]
, 2002 Recently quantum tomography has been proposed as a fundamental tool for prototyping a few qubit quantum device. It allows the complete reconstruction of the state produced from a given input into the device.
A. G. White +11 more
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AVS Quantum Science, 2020 The striking differences between quantum and classical systems predicate disruptive quantum technologies. We peruse quantumness from a variety of viewpoints, concentrating on phase-space formulations because they can be applied beyond particular symmetry groups. The symmetry-transcending properties of the Husimi Q function make it our basic tool.
Gerd Leuchs +8 more
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Remote transfer of Gaussian quantum discord
, 2014 Quantum discord quantifies quantum correlation between quantum systems, which has potential application in quantum information processing. In this paper, we propose a scheme realizing the remote transfer of Gaussian quantum discord, in which another ...
Ma, Lingyu, Su, Xiaolong
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