Control of exciton dynamics in nanodots for quantum operations

被引：176

作者：

Chen, PC ^{[1
]}

Piermarocchi, C ^{[1
]}

Sham, LJ ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.87.067401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a theory to further a new perspective of proactive control of exciton dynamics in the quantum limit. Circularly polarized optical pulses in a semiconductor nanodot are used to control the dynamics of two interacting excitons of opposite polarizations. Shaping of femtosecond laser pulses keeps the quantum operation within the decoherence time. Computation of the fidelity of the operations and application to the complete solution of a minimal quantum computing algorithm demonstrate in theory the feasibility of quantum control.

引用

页码：67401 / 1

页数：4

共 26 条

[1]

[Anonymous], 2009, Quantum computation and quantum information, DOI DOI 10.1119/1.1463744

[2] CONDITIONAL QUANTUM DYNAMICS AND LOGIC GATES [J].

BARENCO, A ;

DEUTSCH, D ;

EKERT, A ;

JOZSA, R .

PHYSICAL REVIEW LETTERS, 1995, 74 (20) :4083-4086

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

Biolatti, E ;

Iotti, RC ;

Zanardi, P ;

Rossi, F .

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

[4] Coherent optical control of the quantum state of a single quantum dot [J].

Bonadeo, NH ;

Erland, J ;

Gammon, D ;

Park, D ;

Katzer, DS ;

Steel, DG .

SCIENCE, 1998, 282 (5393) :1473-1476

[5] Nonlinear nano-optics: Probing one exciton at a time [J].

Bonadeo, NH ;

Chen, G ;

Gammon, D ;

Katzer, DS ;

Park, D ;

Steel, DG .

PHYSICAL REVIEW LETTERS, 1998, 81 (13) :2759-2762

[6] Coupling nanocrystals to a high-Q silica microsphere:: Entanglement in quantum dots via photon exchange -: art. no. 032307 [J].

Brun, TA ;

Wang, HL .

PHYSICAL REVIEW A, 2000, 61 (03) :5

[7] Physical optimization of quantum error correction circuits [J].

Burkard, G ;

Loss, D ;

DiVincenzo, DP ;

Smolin, JA .

PHYSICAL REVIEW B, 1999, 60 (16) :11404-11416

[8] 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

[9] Theory of coherent optical control of exciton spin dynamics in a semiconductor dot [J].

Chen, PC ;

Piermarocchi, C ;

Sham, LJ .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2001, 10 (1-3) :7-12

[10] Experimental realization of a quantum algorithm [J].

Chuang, IL ;

Vandersypen, LMK ;

Zhou, XL ;

Leung, DW ;

Lloyd, S .

NATURE, 1998, 393 (6681) :143-146

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