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Weak values are quantum: you can bet on it

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Weak values are quantum: you can bet on it. / Romito, Alessandro; Jordan, Andrew N.; Aharonov, Yakir et al.
In: Quantum Studies: Mathematics and Foundations, Vol. 3, No. 1, 04.2016, p. 1-4.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Romito, A, Jordan, AN, Aharonov, Y & Gefen, Y 2016, 'Weak values are quantum: you can bet on it', Quantum Studies: Mathematics and Foundations, vol. 3, no. 1, pp. 1-4. https://doi.org/10.1007/s40509-015-0069-z

APA

Romito, A., Jordan, A. N., Aharonov, Y., & Gefen, Y. (2016). Weak values are quantum: you can bet on it. Quantum Studies: Mathematics and Foundations, 3(1), 1-4. https://doi.org/10.1007/s40509-015-0069-z

Vancouver

Romito A, Jordan AN, Aharonov Y, Gefen Y. Weak values are quantum: you can bet on it. Quantum Studies: Mathematics and Foundations. 2016 Apr;3(1):1-4. Epub 2016 Jan 29. doi: 10.1007/s40509-015-0069-z

Author

Romito, Alessandro ; Jordan, Andrew N. ; Aharonov, Yakir et al. / Weak values are quantum : you can bet on it. In: Quantum Studies: Mathematics and Foundations. 2016 ; Vol. 3, No. 1. pp. 1-4.

Bibtex

@article{2185e52e841c4fdb95383a704df3b1a0,
title = "Weak values are quantum: you can bet on it",
abstract = "The outcome of a weak quantum measurement conditioned to a subsequent postselection (a weak value protocol) can assume peculiar values. These results cannot be explained in terms of conditional probabilistic outcomes of projective measurements. However, a classical model has been recently put forward that can reproduce peculiar expectation values, reminiscent of weak values. This led the authors of that work to claim that weak values have an entirely classical explanation. Here we discuss what is quantum about weak values with the help of a simple model based on basic quantum mechanics. We first demonstrate how a classical theory can indeed give rise to non-trivial conditional values, and explain what features of weak values are genuinely quantum. We finally use our model to outline some main issues under current research.",
keywords = "quant-ph, cond-mat.mes-hall, Quantum measurement, Weak values, Quantum estimation, Quantum back-action ",
author = "Alessandro Romito and Jordan, {Andrew N.} and Yakir Aharonov and Yuval Gefen",
note = "6 pages, 1 figure The final publication is available at Springer via http://dx.doi.org/10.1007/s40509-015-0069-z",
year = "2016",
month = apr,
doi = "10.1007/s40509-015-0069-z",
language = "English",
volume = "3",
pages = "1--4",
journal = "Quantum Studies: Mathematics and Foundations",
issn = "2196-5617",
publisher = "Springer Verlag",
number = "1",

}

RIS

TY - JOUR

T1 - Weak values are quantum

T2 - you can bet on it

AU - Romito, Alessandro

AU - Jordan, Andrew N.

AU - Aharonov, Yakir

AU - Gefen, Yuval

N1 - 6 pages, 1 figure The final publication is available at Springer via http://dx.doi.org/10.1007/s40509-015-0069-z

PY - 2016/4

Y1 - 2016/4

N2 - The outcome of a weak quantum measurement conditioned to a subsequent postselection (a weak value protocol) can assume peculiar values. These results cannot be explained in terms of conditional probabilistic outcomes of projective measurements. However, a classical model has been recently put forward that can reproduce peculiar expectation values, reminiscent of weak values. This led the authors of that work to claim that weak values have an entirely classical explanation. Here we discuss what is quantum about weak values with the help of a simple model based on basic quantum mechanics. We first demonstrate how a classical theory can indeed give rise to non-trivial conditional values, and explain what features of weak values are genuinely quantum. We finally use our model to outline some main issues under current research.

AB - The outcome of a weak quantum measurement conditioned to a subsequent postselection (a weak value protocol) can assume peculiar values. These results cannot be explained in terms of conditional probabilistic outcomes of projective measurements. However, a classical model has been recently put forward that can reproduce peculiar expectation values, reminiscent of weak values. This led the authors of that work to claim that weak values have an entirely classical explanation. Here we discuss what is quantum about weak values with the help of a simple model based on basic quantum mechanics. We first demonstrate how a classical theory can indeed give rise to non-trivial conditional values, and explain what features of weak values are genuinely quantum. We finally use our model to outline some main issues under current research.

KW - quant-ph

KW - cond-mat.mes-hall

KW - Quantum measurement

KW - Weak values

KW - Quantum estimation

KW - Quantum back-action

U2 - 10.1007/s40509-015-0069-z

DO - 10.1007/s40509-015-0069-z

M3 - Journal article

VL - 3

SP - 1

EP - 4

JO - Quantum Studies: Mathematics and Foundations

JF - Quantum Studies: Mathematics and Foundations

SN - 2196-5617

IS - 1

ER -