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Null weak values in multi-level systems

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Null weak values in multi-level systems. / Zilberberg, Oded; Romito, Alessandro; Gefen, Yuval.
In: Physica Scripta, Vol. 2012, No. T151, 014014, 01.11.2012.

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

Harvard

Zilberberg, O, Romito, A & Gefen, Y 2012, 'Null weak values in multi-level systems', Physica Scripta, vol. 2012, no. T151, 014014. https://doi.org/10.1088/0031-8949/2012/T151/014014

APA

Zilberberg, O., Romito, A., & Gefen, Y. (2012). Null weak values in multi-level systems. Physica Scripta, 2012(T151), Article 014014. https://doi.org/10.1088/0031-8949/2012/T151/014014

Vancouver

Zilberberg O, Romito A, Gefen Y. Null weak values in multi-level systems. Physica Scripta. 2012 Nov 1;2012(T151):014014. doi: 10.1088/0031-8949/2012/T151/014014

Author

Zilberberg, Oded ; Romito, Alessandro ; Gefen, Yuval. / Null weak values in multi-level systems. In: Physica Scripta. 2012 ; Vol. 2012, No. T151.

Bibtex

@article{1e8494f03d6d43c38b70a2be10950dfb,
title = "Null weak values in multi-level systems",
abstract = "A two-step measurement protocol of a quantum system, known as the weak value (WV), was introduced more than two decades ago by Aharonov et al (1988 Phys. Rev. Lett. 60 1351) and has since then been studied in various contexts. In this paper, we discuss another two-step measurement protocol that we dub the null weak value (NWV). The protocol consists of a partial-collapse measurement followed by quantum manipulation on the system and finally a strong measurement. The first step is a strong measurement which takes place with a small probability. The second strong measurement is used as a postselection on the outcome of the earlier step. Not being measured in the partial-collapse stage (null outcome) leads to a nontrivial correlation between the two measurements. The NVW protocol, first defined for a two-level system (Zilberberg et al 2012 arXiv:1205.3877), is then generalized to a multi-level system and compared with the standard-WV protocol.",
author = "Oded Zilberberg and Alessandro Romito and Yuval Gefen",
year = "2012",
month = nov,
day = "1",
doi = "10.1088/0031-8949/2012/T151/014014",
language = "English",
volume = "2012",
journal = "Physica Scripta",
issn = "0031-8949",
publisher = "IOP Publishing",
number = "T151",

}

RIS

TY - JOUR

T1 - Null weak values in multi-level systems

AU - Zilberberg, Oded

AU - Romito, Alessandro

AU - Gefen, Yuval

PY - 2012/11/1

Y1 - 2012/11/1

N2 - A two-step measurement protocol of a quantum system, known as the weak value (WV), was introduced more than two decades ago by Aharonov et al (1988 Phys. Rev. Lett. 60 1351) and has since then been studied in various contexts. In this paper, we discuss another two-step measurement protocol that we dub the null weak value (NWV). The protocol consists of a partial-collapse measurement followed by quantum manipulation on the system and finally a strong measurement. The first step is a strong measurement which takes place with a small probability. The second strong measurement is used as a postselection on the outcome of the earlier step. Not being measured in the partial-collapse stage (null outcome) leads to a nontrivial correlation between the two measurements. The NVW protocol, first defined for a two-level system (Zilberberg et al 2012 arXiv:1205.3877), is then generalized to a multi-level system and compared with the standard-WV protocol.

AB - A two-step measurement protocol of a quantum system, known as the weak value (WV), was introduced more than two decades ago by Aharonov et al (1988 Phys. Rev. Lett. 60 1351) and has since then been studied in various contexts. In this paper, we discuss another two-step measurement protocol that we dub the null weak value (NWV). The protocol consists of a partial-collapse measurement followed by quantum manipulation on the system and finally a strong measurement. The first step is a strong measurement which takes place with a small probability. The second strong measurement is used as a postselection on the outcome of the earlier step. Not being measured in the partial-collapse stage (null outcome) leads to a nontrivial correlation between the two measurements. The NVW protocol, first defined for a two-level system (Zilberberg et al 2012 arXiv:1205.3877), is then generalized to a multi-level system and compared with the standard-WV protocol.

U2 - 10.1088/0031-8949/2012/T151/014014

DO - 10.1088/0031-8949/2012/T151/014014

M3 - Journal article

AN - SCOPUS:84871180474

VL - 2012

JO - Physica Scripta

JF - Physica Scripta

SN - 0031-8949

IS - T151

M1 - 014014

ER -