InP/GaInP quantum dots as single-photon sources for quantum information processing

被引：3

作者：

Aichele, Thomas ^{[1
]}

Scholz, Matthias

Benson, Oliver

机构：

[1] Nanophys & Semicond Grp, F-38054 Grenoble, France

[2] Humboldt Univ, Dept Phys, D-10117 Berlin, Germany

来源：

PROCEEDINGS OF THE IEEE | 2007年 / 95卷 / 09期

关键词：

Hanbury Brown-Twiss (HBT); photon correlation; quantum cryptography; quantum dots; quantum information; quantum optics; semiconductor nanostructures; single-photon emitters;

D O I：

10.1109/JPROC.2007.900965

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Many important realizations and proposals for applications in quantum information processing require single photons as carriers of quantum information Here, we review different demonstrations of quantum applications using a deterministic single-photon source based on InP/GaInP quantum dots. First, the single-photon generation is described and verified by autocorrelation measurements. A modification of the correlation setup allows the simultaneous observation of wave and particle properties of the photons. Additional to single-photon emission, photon pairs and triplets from multiexciton cascades were observed, as well. using a Michelson interferometer an efficient separation of photon pairs can be achieved allowing multiplexing on a single-photon level. The applicability was demonstrated in a quantum key distribution experiment. As another application, different degrees of freedom of a single photon were used to realize a two-qubit Deutsch-Jozsa algorithm. Encoding the quantum information in appropriate bases, an operation of the setup resistant to phase fluctuation was demonstrated.

引用

页码：1791 / 1804

页数：14

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