Current detection of superradiance and induced entanglement of double quantum dot excitons

被引：48

作者：

Chen, YN ^{[1
]}

Chuu, DS

Brandes, T

机构：

[1] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30050, Taiwan

[2] Univ Manchester, Dept Phys, Manchester M60 1QD, Lancs, England

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.90.166802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose to measure the superradiance effect by observing the current through a semiconductor double-dot system. An electron and a hole are injected separately into one of the quantum dots to form an exciton and then recombine radiatively. We find that the stationary current shows oscillatory behavior as one varies the interdot distance. The amplitude of oscillation can be increased by incorporating the system into a microcavity. Furthermore, the current is suppressed if the dot distance is small compared to the wavelength of the emitted photon. This photon trapping phenomenon generates the entangled state and may be used to control the emission of single photons at predetermined times.

引用

页码：4 / 166802

页数：4

共 30 条

[1] Collective radiative decay of light- and heavy-hole exciton polaritons in multiple-quantum-well structures [J].

Ammerlahn, D ;

Kuhl, J ;

Grote, B ;

Koch, SW ;

Khitrova, G ;

Gibbs, H .

PHYSICAL REVIEW B, 2000, 62 (11) :7350-7356

[2] Quantum information and computation [J].

Bennett, CH ;

DiVincenzo, DP .

NATURE, 2000, 404 (6775) :247-255

[3] Regulated and entangled photons from a single quantum dot [J].

Benson, O ;

Santori, C ;

Pelton, M ;

Yamamoto, Y .

PHYSICAL REVIEW LETTERS, 2000, 84 (11) :2513-2516

[4] Spontaneous emission of phonons by coupled quantum dots [J].

Brandes, T ;

Kramer, B .

PHYSICAL REVIEW LETTERS, 1999, 83 (15) :3021-3024

[5] Creation of entanglement by interaction with a common heat bath [J].

Braun, D .

PHYSICAL REVIEW LETTERS, 2002, 89 (27) :277901-277901

[6] Decay rate and renormalized frequency shift of superradiant excitons: Crossover from two-dimensional to three-dimensional crystals [J].

Chen, YN ;

Chuu, DS .

PHYSICAL REVIEW B, 2000, 61 (16) :10815-10819

[7] Decay rate and renormalized frequency shift of a quantum wire Wannier exciton in a planar microcavity [J].

Chen, YN ;

Chuu, DS ;

Brandes, T ;

Kramer, B .

PHYSICAL REVIEW B, 2001, 64 (12)

[8] QUANTUM COMPUTATIONS WITH COLD TRAPPED IONS [J].

CIRAC, JI ;

ZOLLER, P .

PHYSICAL REVIEW LETTERS, 1995, 74 (20) :4091-4094

[9] RADIATIVE LIFETIMES OF EXCITONS IN QUANTUM-WELLS - LOCALIZATION AND PHASE-COHERENCE EFFECTS [J].

CITRIN, DS .

PHYSICAL REVIEW B, 1993, 47 (07) :3832-3841

[10] Impurity scattering induced entanglement of ballistic electrons [J].

Costa, AT ;

Bose, S .

PHYSICAL REVIEW LETTERS, 2001, 87 (27) :277901-277901

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