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

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In: Physical review letters, Vol. 93, 2004, p. 186806.

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

Tworzydlo, J, Tajic, A, Schomerus, H, Brouwer, PW & Beenakker, CWJ 2004, 'Exponential sensitivity to dephasing of electrical conduction through a quantum dot.', *Physical review letters*, vol. 93, pp. 186806. https://doi.org/10.1103/PhysRevLett.93.186806

Tworzydlo, J., Tajic, A., Schomerus, H., Brouwer, P. W., & Beenakker, C. W. J. (2004). Exponential sensitivity to dephasing of electrical conduction through a quantum dot. *Physical review letters*, *93*, 186806. https://doi.org/10.1103/PhysRevLett.93.186806

Tworzydlo J, Tajic A, Schomerus H, Brouwer PW, Beenakker CWJ. Exponential sensitivity to dephasing of electrical conduction through a quantum dot. Physical review letters. 2004;93:186806. doi: 10.1103/PhysRevLett.93.186806

@article{97f0bfbf2d4f4111865bd97ddc57042d,

title = "Exponential sensitivity to dephasing of electrical conduction through a quantum dot.",

abstract = "According to random-matrix theory, interference effects in the conductance of a ballistic chaotic quantum dot should vanish propto(tau_phi/tau_D)^p when the dephasing time tau_phi becomes small compared to the mean dwell time tau_D. Aleiner and Larkin have predicted that the power law crosses over to an exponential suppression exp({\^a}��tau_E/tau_phi) when tau_phi drops below the Ehrenfest time tau_E. We report the first observation of this crossover in a computer simulation of universal conductance fluctuations. Their theory also predicts an exponential suppression propto exp({\^a}��tau_E/tau_D) in the absence of dephasing{\^a}��which is not observed. We show that the effective random-matrix theory proposed previously for quantum dots without dephasing explains both observations.",

author = "J. Tworzydlo and A. Tajic and H. Schomerus and Brouwer, {P. W.} and Beenakker, {C. W. J.}",

year = "2004",

doi = "10.1103/PhysRevLett.93.186806",

language = "English",

volume = "93",

pages = "186806",

journal = "Physical review letters",

publisher = "American Physical Society",

}

TY - JOUR

T1 - Exponential sensitivity to dephasing of electrical conduction through a quantum dot.

AU - Tworzydlo, J.

AU - Tajic, A.

AU - Schomerus, H.

AU - Brouwer, P. W.

AU - Beenakker, C. W. J.

PY - 2004

Y1 - 2004

N2 - According to random-matrix theory, interference effects in the conductance of a ballistic chaotic quantum dot should vanish propto(tau_phi/tau_D)^p when the dephasing time tau_phi becomes small compared to the mean dwell time tau_D. Aleiner and Larkin have predicted that the power law crosses over to an exponential suppression exp(â��tau_E/tau_phi) when tau_phi drops below the Ehrenfest time tau_E. We report the first observation of this crossover in a computer simulation of universal conductance fluctuations. Their theory also predicts an exponential suppression propto exp(â��tau_E/tau_D) in the absence of dephasingâ��which is not observed. We show that the effective random-matrix theory proposed previously for quantum dots without dephasing explains both observations.

AB - According to random-matrix theory, interference effects in the conductance of a ballistic chaotic quantum dot should vanish propto(tau_phi/tau_D)^p when the dephasing time tau_phi becomes small compared to the mean dwell time tau_D. Aleiner and Larkin have predicted that the power law crosses over to an exponential suppression exp(â��tau_E/tau_phi) when tau_phi drops below the Ehrenfest time tau_E. We report the first observation of this crossover in a computer simulation of universal conductance fluctuations. Their theory also predicts an exponential suppression propto exp(â��tau_E/tau_D) in the absence of dephasingâ��which is not observed. We show that the effective random-matrix theory proposed previously for quantum dots without dephasing explains both observations.

U2 - 10.1103/PhysRevLett.93.186806

DO - 10.1103/PhysRevLett.93.186806

M3 - Journal article

VL - 93

SP - 186806

JO - Physical review letters

JF - Physical review letters

ER -