Spin decoherence of a heavy hole coupled to nuclear spins in a quantum dot

被引：239

作者：

Fischer, Jan ^{[1
]}

Coish, W. A. ^{[1
,2
,3
]}

Bulaev, D. V. ^{[1
,4
]}

Loss, Daniel ^{[1
]}

机构：

[1] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland

[2] Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada

[3] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada

[4] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.78.155329

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We theoretically study the interaction of a heavy hole with nuclear spins in a quasi-two-dimensional III-V semiconductor quantum dot and the resulting dephasing of heavy-hole spin states. It has frequently been stated in the literature that heavy holes have a negligible interaction with nuclear spins. We show that this is not the case. In contrast, the interaction can be rather strong and will be the dominant source of decoherence in some cases. We also show that for unstrained quantum dots the form of the interaction is Ising, resulting in unique and interesting decoherence properties, which might provide a crucial advantage to using dot-confined hole spins for quantum information processing, as compared to electron spins.

引用

收藏

页数：9

相关论文

共 39 条

[21] Electrical control of hole spin relaxation in charge tunable InAs/GaAs quantum dots -: art. no. 147401 [J].

Laurent, S ;

Eble, B ;

Krebs, O ;

Lemaître, A ;

Urbaszek, B ;

Marie, X ;

Amand, T ;

Voisin, P .

PHYSICAL REVIEW LETTERS, 2005, 94 (14)

[22] Quantum computation with quantum dots [J].

Loss, D ;

DiVincenzo, DP .

PHYSICAL REVIEW A, 1998, 57 (01) :120-126

[23] Hole spin quantum beats in quantum-well structures [J].

Marie, X ;

Amand, T ;

Le Jeune, P ;

Paillard, M ;

Renucci, P ;

Golub, LE ;

Dymnikov, VD ;

Ivchenko, EL .

PHYSICAL REVIEW B, 1999, 60 (08) :5811-5817

[24] Electron spin relaxation by nuclei in semiconductor quantum dots [J].

Merkulov, IA ;

Efros, AL ;

Rosen, M .

PHYSICAL REVIEW B, 2002, 65 (20) :2053091-2053098

[25] LOW FIELD ELECTRON-NUCLEAR SPIN COUPLING IN GALLIUM-ARSENIDE UNDER OPTICAL-PUMPING CONDITIONS [J].

PAGET, D ;

LAMPEL, G ;

SAPOVAL, B ;

SAFAROV, VI .

PHYSICAL REVIEW B, 1977, 15 (12) :5780-5796

[26] Coherent manipulation of coupled electron spins in semiconductor quantum dots [J].

Petta, JR ;

Johnson, AC ;

Taylor, JM ;

Laird, EA ;

Yacoby, A ;

Lukin, MD ;

Marcus, CM ;

Hanson, MP ;

Gossard, AC .

SCIENCE, 2005, 309 (5744) :2180-2184

[27] Fast optical preparation, control, and readout of a single quantum dot spin [J].

Ramsay, A. J. ;

Boyle, S. J. ;

Kolodka, R. S. ;

Oliveira, J. B. B. ;

Skiba-Szymanska, J. ;

Liu, H. Y. ;

Hopkinson, M. ;

Fox, A. M. ;

Skolnick, M. S. .

PHYSICAL REVIEW LETTERS, 2008, 100 (19)

[28] Suppressing spin qubit dephasing by nuclear state preparation [J].

Reilly, D. J. ;

Taylor, J. M. ;

Petta, J. R. ;

Marcus, C. M. ;

Hanson, M. P. ;

Gossard, A. C. .

SCIENCE, 2008, 321 (5890) :817-821

[29] The quadrupole mechanism of hole spin relaxation [J].

Serebrennikov, Yuri A. .

PHYSICS LETTERS A, 2008, 372 (18) :3307-3312

[30] Optical readout and initialization of an electron spin in a single quantum dot [J].

Shabaev, A ;

Efros, AL ;

Gammon, D ;

Merkulov, IA .

PHYSICAL REVIEW B, 2003, 68 (20)

← 1 2 3 4 →