Results 11 to 20 of about 1,375,208 (346)
Physical Review Letters, 2015 Smoothing is an estimation method whereby a classical state (probability distribution for classical variables) at a given time is conditioned on all-time (both past and future) observations.
Guevara, Ivonne, Wiseman, Howard
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Quantum state estimation [PDF]
Physical Review A, 1996 New algorithm for quantum state estimation based on the maximum likelihood estimation is proposed. Existing techniques for state reconstruction based on the inversion of measured data are shown to be overestimated since they do not guarantee the positive
C. W. Helstrom, J. Perina, Z. Hradil
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Entropy of Quantum States [PDF]
Entropy, 2021 Given the algebra of observables of a quantum system subject to selection rules, a state can be represented by different density matrices. As a result, different von Neumann entropies can be associated with the same state. Motivated by a minimality property of the von Neumann entropy of a density matrix with respect to its possible decompositions into ...
Paolo Facchi +2 more
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On quantum operations as quantum states [PDF]
Annals of Physics, 2004 Revtex, 14 pages, v4: changed ...
Christophe Patricot, Pablo Arrighi
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Holographic Quantum States [PDF]
Physical Review Letters, 2010 We show how continuous matrix product states of quantum field theories can be described in terms of the dissipative non-equilibrium dynamics of a lower-dimensional auxiliary boundary field theory. We demonstrate that the spatial correlation functions of the bulk field can be brought into one-to-one correspondence with the temporal statistics of the ...
Tobias J. Osborne +2 more
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Quantum Hypercube States [PDF]
Physical Review Letters, 2019 Main consists of 5 pages and 5 figures.
Howard, L. A. +6 more
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Quantum State Combinatorics. [PDF]
Entropy (Basel)This paper concerns the analysis of large quantum states. It is a notoriously difficult problem to quantify separability of quantum states, and for large quantum states, it is unfeasible. Here we posit that when quantum states are large, we can deduce reasonable expectations for the complex structure of non-classical multipartite correlations with ...
Scholes GD.
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Discorrelated quantum states [PDF]
Scientific Reports, 2017 AbstractThe statistical properties of photons are fundamental to investigating quantum mechanical phenomena using light. In multiphoton, two-mode systems, correlations may exist between outcomes of measurements made on each mode which exhibit useful properties.
Tim J. Bartley +4 more
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The European Physical Journal D, 2006 We study quantum state estimation problems where the reference system with respect to which the state is measured should itself be treated quantum mechanically. In this situation, the difference between the system and the reference tends to fade. We investigate how the overlap between two pure quantum states can be optimally estimated, in several ...
Gisin, N., Iblisdir, S.
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Thermalization of quantum states [PDF]
Journal of Mathematical Physics, 1999 An exact stochastic model for the thermalization of quantum states is proposed. The model has various physically appealing properties. The dynamics are characterized by an underlying Schrödinger evolution, together with a nonlinear term driving the system toward an asymptotic equilibrium state and a stochastic term reflecting fluctuations.
Lane P. Hughston, Dorje C. Brody
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