Spin-based quantum gating with semiconductor quantum dots by bichromatic radiation method

被引：18

作者：

Feng, M

D'Amico, I

Zanardi, P

Rossi, F

机构：

[1] ISI Fdn, I-00133 Rome, Italy

[2] Chinese Acad Sci, Wuhan Inst Phys & Math, Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China

[3] Politecn Torino, Dipartimento Fis, I-10129 Turin, Italy

来源：

EUROPHYSICS LETTERS | 2004年 / 66卷 / 01期

关键词：

D O I：

10.1209/epl/i2003-10143-x

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A potential scheme is proposed for realizing a two-qubit quantum gate in semiconductor quantum dots. Information is encoded in the spin degrees of freedom of one excess conduction electron of each quantum dot. We propose to use two lasers, radiating two neighboring QDs, and tuned to blue detuning with respect to the resonant frequencies of individual excitons. The two-qubit phase gate can be achieved by means of both Pauli-blocking effect and dipole-dipole coupling between intermediate excitonic states.

引用

收藏

页码：14 / 20

页数：7

相关论文

共 22 条

[1] Temperature dependence of the exciton homogeneous linewidth in In0.60Ga0.40As/GaAs self-assembled quantum dots -: art. no. 041308 [J].

Bayer, M ;

Forchel, A .

PHYSICAL REVIEW B, 2002, 65 (04) :1-4

[2] Quantum information processing with semiconductor macroatoms [J].

Biolatti, E ;

Iotti, RC ;

Zanardi, P ;

Rossi, F .

PHYSICAL REVIEW LETTERS, 2000, 85 (26) :5647-5650

[3] Spin-based all-optical quantum computation with quantum dots: Understanding and suppressing decoherence [J].

Calarco, T ;

Datta, A ;

Fedichev, P ;

Pazy, E ;

Zoller, P .

PHYSICAL REVIEW A, 2003, 68 (01) :21

[4] Optically induced entanglement of excitons in a single quantum dot [J].

Chen, G ;

Bonadeo, NH ;

Steel, DG ;

Gammon, D ;

Katzer, DS ;

Park, D ;

Sham, LJ .

SCIENCE, 2000, 289 (5486) :1906-1909

[5] Optically driven spin memory in n-doped InAs-GaAs quantum dots -: art. no. 207401 [J].

Cortez, S ;

Krebs, O ;

Laurent, S ;

Senes, M ;

Marie, X ;

Voisin, P ;

Ferreira, R ;

Bastard, G ;

Gérard, JM ;

Amand, T .

PHYSICAL REVIEW LETTERS, 2002, 89 (20)

[6] Spin-based quantum-information processing with semiconductor quantum dots and cavity QED [J].

Feng, M ;

D'Amico, I ;

Zanardi, P ;

Rossi, F .

PHYSICAL REVIEW A, 2003, 67 (01) :4

[7] Testing wave-particle duality with the hot-ion quantum computation [J].

Feng, M ;

Zhu, XW ;

Gao, KL ;

Fang, XM .

PHYSICS LETTERS A, 2002, 294 (5-6) :271-277

[8] Electrical detection of optically induced charge storage in self-assembled InAs quantum dots [J].

Finley, JJ ;

Skalitz, M ;

Arzberger, M ;

Zrenner, A ;

Bohm, G ;

Abstreiter, G .

APPLIED PHYSICS LETTERS, 1998, 73 (18) :2618-2620

[9] Ultrafast manipulation of electron spin coherence [J].

Gupta, JA ;

Knobel, R ;

Samarth, N ;

Awschalom, DD .

SCIENCE, 2001, 292 (5526) :2458-2461

[10] Quantum information processing using quantum dot spins and cavity QED [J].

Imamoglu, A ;

Awschalom, DD ;

Burkard, G ;

DiVincenzo, DP ;

Loss, D ;

Sherwin, M ;

Small, A .

PHYSICAL REVIEW LETTERS, 1999, 83 (20) :4204-4207