Quantum information processing in solid states: Qubit decoherence by low-frequency noise

K. Rabenstein; V. A. Sverdlov; Dmitri V. Averin

doi:10.1142/9789812701619_0035

Quantum information processing in solid states: Qubit decoherence by low-frequency noise

K. Rabenstein
, V. A. Sverdlov
, Dmitri V. Averin

Physics and Astronomy

Stony Brook University

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

We have derived explicit non-perturbative expression for decoherence of quantum oscillations in a qubit by low-frequency noise. Decoherence strength is controlled by the noise spectral density at zero frequency while the noise correlation time r determines the time 1/√t of crossover from the to the exponential suppression of coherence. We also performed Monte Carlo simulations of qubit dynamics with noise which agree with the analytical results and show that most of the conclusions are valid for both Gaussian and non-Gaussian noise.

Original language	English
Title of host publication	Realizing Controllable Quantum States
Subtitle of host publication	Mesoscopic Superconductivity and Spintronics - In the Light of Quantum Computation
Publisher	World Scientific Publishing Co.
Pages	225-232
Number of pages	8
ISBN (Electronic)	9789812701619
ISBN (Print)	9789812564689
DOIs	https://doi.org/10.1142/9789812701619_0035
State	Published - Jan 1 2005

Access to Document

10.1142/9789812701619_0035

Cite this

@inbook{5bb8aae25e4144c5b9ee1e0ce32f845d,

title = "Quantum information processing in solid states: Qubit decoherence by low-frequency noise",

abstract = "We have derived explicit non-perturbative expression for decoherence of quantum oscillations in a qubit by low-frequency noise. Decoherence strength is controlled by the noise spectral density at zero frequency while the noise correlation time r determines the time 1/√t of crossover from the to the exponential suppression of coherence. We also performed Monte Carlo simulations of qubit dynamics with noise which agree with the analytical results and show that most of the conclusions are valid for both Gaussian and non-Gaussian noise.",

author = "K. Rabenstein and Sverdlov, \{V. A.\} and Averin, \{Dmitri V.\}",

note = "Publisher Copyright: {\textcopyright} 2005 by World Scientific Publishing Co. Pte. Ltd.",

year = "2005",

month = jan,

day = "1",

doi = "10.1142/9789812701619\_0035",

language = "English",

isbn = "9789812564689",

pages = "225--232",

booktitle = "Realizing Controllable Quantum States",

publisher = "World Scientific Publishing Co.",

}

Quantum information processing in solid states: Qubit decoherence by low-frequency noise. / Rabenstein, K.; Sverdlov, V. A.; Averin, Dmitri V.
Realizing Controllable Quantum States: Mesoscopic Superconductivity and Spintronics - In the Light of Quantum Computation. World Scientific Publishing Co., 2005. p. 225-232.

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

TY - CHAP

T1 - Quantum information processing in solid states

T2 - Qubit decoherence by low-frequency noise

AU - Rabenstein, K.

AU - Sverdlov, V. A.

AU - Averin, Dmitri V.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - We have derived explicit non-perturbative expression for decoherence of quantum oscillations in a qubit by low-frequency noise. Decoherence strength is controlled by the noise spectral density at zero frequency while the noise correlation time r determines the time 1/√t of crossover from the to the exponential suppression of coherence. We also performed Monte Carlo simulations of qubit dynamics with noise which agree with the analytical results and show that most of the conclusions are valid for both Gaussian and non-Gaussian noise.

AB - We have derived explicit non-perturbative expression for decoherence of quantum oscillations in a qubit by low-frequency noise. Decoherence strength is controlled by the noise spectral density at zero frequency while the noise correlation time r determines the time 1/√t of crossover from the to the exponential suppression of coherence. We also performed Monte Carlo simulations of qubit dynamics with noise which agree with the analytical results and show that most of the conclusions are valid for both Gaussian and non-Gaussian noise.

UR - https://www.scopus.com/pages/publications/84967592180

U2 - 10.1142/9789812701619_0035

DO - 10.1142/9789812701619_0035

M3 - Chapter

AN - SCOPUS:84967592180

SN - 9789812564689

SP - 225

EP - 232

BT - Realizing Controllable Quantum States

PB - World Scientific Publishing Co.

ER -

Quantum information processing in solid states: Qubit decoherence by low-frequency noise

Abstract

Access to Document

Other files and links

Fingerprint

Cite this