Results 11 to 20 of about 673,674 (298)
Work measurement as a generalized quantum measurement [PDF]
Physical Review Letters, 2014 We present a new method to measure the work $w$ performed on a driven quantum system and to sample its probability distribution $P(w)$. The method is based on a simple fact that remained unnoticed until now: Work on a quantum system can be measured by ...
Cerisola, Federico +2 more
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Quantum algorithmic measurement [PDF]
Nature Communications, 2022 AbstractThere has been recent promising experimental and theoretical evidence that quantum computational tools might enhance the precision and efficiency of physical experiments. However, a systematic treatment and comprehensive framework are missing.
Dorit Aharonov +2 more
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Quantum Measurements of Time [PDF]
Physical Review Letters, 2020 4 pages+appendices (=supplemental material). Version accepted for publication on Phys.
Maccone L., Sacha K.
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Quantum strategies of quantum measurements [PDF]
Physics Letters A, 2001 In classical Monty Hall problem, one player can always win with probability 2/3. We generalize the problem to the quantum domain and show that a fair two-party zero-sum game can be carried out if the other player is permitted to adopt quantum measurement strategy.
Li, Chuan-Feng +3 more
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Undoing a Quantum Measurement [PDF]
Physical Review Letters, 2013 In general, a quantum measurement yields an undetermined answer and alters the system to be consistent with the measurement result. This process maps multiple initial states into a single state and thus cannot be reversed. This has important implications in quantum information processing, where errors can be interpreted as measurements.
Schindler P. +8 more
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Analysis of a quantum measurement [PDF]
Physical Review D, 1985 A specific measurement model based on quantum nondemolition monitoring of oscillator quanta is used to illustrate the essential elements of the quantum theory of measurement, viz., state reduction and existence of a ‘‘pointer basis,’’ recently discussed by Zurek.
Walls, D. F. +2 more
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Quantum Discord: A Measure of the Quantumness of Correlations [PDF]
Physical Review Letters, 2001 Two classically identical expressions for the mutual information generally differ when the systems involved are quantum. This difference defines the quantum discord. It can be used as a measure of the quantumness of correlations. Separability of the density matrix describing a pair of systems does not guarantee vanishing of the discord, thus showing ...
Ollivier, Harold, Zurek, Wojciech H.
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Observing a Quantum Measurement [PDF]
Foundations of Physics, 2021 21 pages, 3 ...
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On extending the quantum measure [PDF]
Journal of Physics A: Mathematical and Theoretical, 2010 We point out that a quantum system with a strongly positive quantum measure or decoherence functional gives rise to a vector valued measure whose domain is the algebra of events or physical questions. This gives an immediate handle on the question of the extension of the decoherence functional to the sigma algebra generated by this algebra of events ...
Dowker, Fay +2 more
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Quantum Invariant Measures [PDF]
Communications in Mathematical Physics, 2001 We derive an explicit expression for the Haar integral on the quantized algebra of regular functions C_q[K] on the compact real form K of an arbitrary simply connected complex simple algebraic group G. This is done in terms of the irreducible *-representations of the Hopf *-algebra C_q[K]. Quantum analogs of the measures on the symplectic leaves of the
Reshetikhin, Nicolai, Yakimov, Milen
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