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Weak measurement of cotunneling time

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Weak measurement of cotunneling time. / Romito, Alessandro; Gefen, Yuval.
In: Physical review B, Vol. 90, No. 8, 085417, 14.08.2014.

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

Harvard

Romito, A & Gefen, Y 2014, 'Weak measurement of cotunneling time', Physical review B, vol. 90, no. 8, 085417. https://doi.org/10.1103/PhysRevB.90.085417

APA

Romito, A., & Gefen, Y. (2014). Weak measurement of cotunneling time. Physical review B, 90(8), Article 085417. https://doi.org/10.1103/PhysRevB.90.085417

Vancouver

Romito A, Gefen Y. Weak measurement of cotunneling time. Physical review B. 2014 Aug 14;90(8):085417. doi: 10.1103/PhysRevB.90.085417

Author

Romito, Alessandro ; Gefen, Yuval. / Weak measurement of cotunneling time. In: Physical review B. 2014 ; Vol. 90, No. 8.

Bibtex

@article{1be58764512a49cab6879fb55c88b1e7,
title = "Weak measurement of cotunneling time",
abstract = "Quantum mechanics allows the existence of {"}virtual states{"} that have no classical analogue. Such virtual states defy direct observation through strong measurement, which would destroy the volatile virtual state. Here we show how a virtual state of an interacting many-body system can be detected employing a weak measurement protocol with postselection. We employ this protocol for the measurement of the time it takes an electron to tunnel through a virtual state of a quantum dot (cotunneling). Contrary to classical intuition, this cotunneling time is independent of the strength of the dot-lead coupling and may deviate from that predicted by time-energy uncertainty relation. Our approach, amenable to experimental verification, may elucidate an important facet of quantum mechanics which hitherto was not accessible by direct measurements.",
keywords = "cond-mat.mes-hall, cond-mat.str-el, quant-ph",
author = "Alessandro Romito and Yuval Gefen",
note = "13 pages, 5 figures, 1 table",
year = "2014",
month = aug,
day = "14",
doi = "10.1103/PhysRevB.90.085417",
language = "English",
volume = "90",
journal = "Physical review B",
issn = "2469-9950",
publisher = "AMER PHYSICAL SOC",
number = "8",

}

RIS

TY - JOUR

T1 - Weak measurement of cotunneling time

AU - Romito, Alessandro

AU - Gefen, Yuval

N1 - 13 pages, 5 figures, 1 table

PY - 2014/8/14

Y1 - 2014/8/14

N2 - Quantum mechanics allows the existence of "virtual states" that have no classical analogue. Such virtual states defy direct observation through strong measurement, which would destroy the volatile virtual state. Here we show how a virtual state of an interacting many-body system can be detected employing a weak measurement protocol with postselection. We employ this protocol for the measurement of the time it takes an electron to tunnel through a virtual state of a quantum dot (cotunneling). Contrary to classical intuition, this cotunneling time is independent of the strength of the dot-lead coupling and may deviate from that predicted by time-energy uncertainty relation. Our approach, amenable to experimental verification, may elucidate an important facet of quantum mechanics which hitherto was not accessible by direct measurements.

AB - Quantum mechanics allows the existence of "virtual states" that have no classical analogue. Such virtual states defy direct observation through strong measurement, which would destroy the volatile virtual state. Here we show how a virtual state of an interacting many-body system can be detected employing a weak measurement protocol with postselection. We employ this protocol for the measurement of the time it takes an electron to tunnel through a virtual state of a quantum dot (cotunneling). Contrary to classical intuition, this cotunneling time is independent of the strength of the dot-lead coupling and may deviate from that predicted by time-energy uncertainty relation. Our approach, amenable to experimental verification, may elucidate an important facet of quantum mechanics which hitherto was not accessible by direct measurements.

KW - cond-mat.mes-hall

KW - cond-mat.str-el

KW - quant-ph

U2 - 10.1103/PhysRevB.90.085417

DO - 10.1103/PhysRevB.90.085417

M3 - Journal article

VL - 90

JO - Physical review B

JF - Physical review B

SN - 2469-9950

IS - 8

M1 - 085417

ER -