Two-photon interference from a quantum dot microcavity: Persistent pure dephasing and suppression of time jitter

被引：30

作者：

Unsleber, Sebastian ^{[1
,2
]}

McCutcheon, Dara P. S. ^{[3
]}

Dambach, Michael ^{[1
,2
]}

Lermer, Matthias ^{[1
,2
]}

Gregersen, Niels ^{[3
]}

Hoefling, Sven ^{[1
,2
,4
]}

Mork, Jesper ^{[3
]}

Schneider, Christian ^{[1
,2
]}

Kamp, Martin ^{[1
,2
]}

机构：

[1] Univ Wurzburg, D-97074 Wurzburg, Germany

[2] Univ Wurzburg, Inst Phys, Wilhelm Conrad Rontgen Res Ctr Complex Mat Syst, D-97074 Wurzburg, Germany

[3] Tech Univ Denmark, Dept Photon Engn, DK-2800 Lyngby, Denmark

[4] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 07期

关键词：

SINGLE-PHOTON SOURCES; DEVICE; TELEPORTATION;

D O I：

10.1103/PhysRevB.91.075413

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate the emission of highly indistinguishable photons from a quasi-resonantly pumped coupled quantum dot-microcavity system operating in the regime of cavity quantum electrodynamics. Changing the sample temperature allows us to vary the quantum dot-cavity detuning and, on spectral resonance, we observe a threefold improvement in the Hong-Ou-Mandel interference visibility, reaching values in excess of 80%. Our measurements off-resonance allow us to investigate varying Purcell enhancements, and to probe the dephasing environment at different temperatures and energy scales. By comparison with our microscopic model, we are able to identify pure dephasing and not time jitter as the dominating source of imperfections in our system.

引用

页数：8

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