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pro vyhledávání: '"quantum measurements"'
Among the surprising features of quantum measurements, the problem of distinguishing and anti-distinguishing general quantum measurements is fundamentally appealing. Quantum theory offers four distinct scenarios for distinguishing (and anti-distingui
Externí odkaz:
http://arxiv.org/abs/2410.10632
Autor:
Raquépas, Renaud, Schenker, Jeffrey
We prove a quenched version of the large deviation principle for Birkhoff-like sums along a sequence of random quantum measurements driven by an ergodic process. We apply the result to the study of entropy production in the two-time measurement frame
Externí odkaz:
http://arxiv.org/abs/2410.15465
Autor:
Doucet, Emery, Deffner, Sebastian
The study of measurements in quantum mechanics exposes many of the ways in which the quantum world is different. For example, one of the hallmarks of quantum mechanics is that observables may be incompatible, implying among other things that it is no
Externí odkaz:
http://arxiv.org/abs/2411.10862
Autor:
Schlosshauer, Maximilian
Publikováno v:
Phys. Rev. A 110, 032215 (2024)
We compare the performance of protective quantum measurements to that of standard projective measurements. Performance is quantified in terms of the uncertainty in the measured expectation value. We derive an expression for the relative performance o
Externí odkaz:
http://arxiv.org/abs/2409.12174
Despite their importance in quantum theory, joint quantum measurements remain poorly understood. An intriguing conceptual and practical question is whether joint quantum measurements on separated systems can be performed without bringing them togethe
Externí odkaz:
http://arxiv.org/abs/2408.00831