Decoherence in nearly isolated quantum dots

被引：41

作者：

Folk, JA ^{[1
]}

Marcus, CM

Harris, JS

机构：

[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[3] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.87.206802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Decoherence in nearly isolated GaAs quantum dots is investigated using the change in the average Coulomb blockade peak height when time-reversal symmetry is broken. The normalized change in the average peak height approaches the predicted universal value of 1/4 at temperatures well below the single-particle level spacing, T < <Delta>, but is greatly suppressed for T > Delta, suggesting that inelastic scattering or other dephasing mechanisms dominate in this regime.

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页码：206802 / 1

页数：4

相关论文

共 32 条

[1] Weak localization in the conductance peaks of Coulomb-blockade quantum dots [J].

Alhassid, Y .

PHYSICAL REVIEW B, 1998, 58 (20) :13383-13386

[2] The statistical theory of quantum dots [J].

Alhassid, Y .

REVIEWS OF MODERN PHYSICS, 2000, 72 (04) :895-968

[3]

Altshuler B.L., 1985, ELECT ELECT INTERACT

[4] Phase relaxation of electrons in disordered conductors [J].

Altshuler, BL ;

Gershenson, ME ;

Aleiner, IL .

PHYSICA E, 1998, 3 (1-3) :58-68

[5] Quasiparticle lifetime in a finite system: A nonperturbative approach [J].

Altshuler, BL ;

Gefen, Y ;

Kamenev, A ;

Levitov, LS .

PHYSICAL REVIEW LETTERS, 1997, 78 (14) :2803-2806

[6] Effect of inelastic scattering on the average Coulomb-blockade peak height in quantum dots [J].

Beenakker, CWJ ;

Schomerus, H ;

Silvestrov, PG .

PHYSICAL REVIEW B, 2001, 64 (03)

[7] WEAK LOCALIZATION IN THIN-FILMS - A TIME-OF-FLIGHT EXPERIMENT WITH CONDUCTION ELECTRONS [J].

BERGMANN, G .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1984, 107 (01) :1-58

[8] Coupled quantum dots as quantum gates [J].

Burkard, G ;

Loss, D ;

DiVincenzo, DP .

PHYSICAL REVIEW B, 1999, 59 (03) :2070-2078

[9] Non-Gaussian distribution of Coulomb blockade peak heights in quantum dots [J].

Chang, AM ;

Baranger, HU ;

Pfeiffer, LN ;

West, KW ;

Chang, TY .

PHYSICAL REVIEW LETTERS, 1996, 76 (10) :1695-1698

[10] Spectroscopy, interactions, and level splittings in an nanoparticles [J].

Davidovic, D ;

Tinkham, M .

PHYSICAL REVIEW LETTERS, 1999, 83 (08) :1644-1647

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