Polarization-correlated photon pairs from a single quantum dot

被引：211

作者：

Santori, C ^{[1
]}

Fattal, D ^{[1
]}

Pelton, M ^{[1
]}

Solomon, GS ^{[1
]}

Yamamoto, Y ^{[1
]}

机构：

[1] Stanford Univ, Edward L Ginzton Lab, Quantum Entanglement Project, ICORP,JST, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.66.045308

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polarization correlation in a linear basis, but not entanglement, is observed between the biexciton and single-exciton photons emitted by a single InAs quantum dot in a two-photon cascade. The results are well described quantitatively by a probabilistic model that includes two decay paths for a biexciton through a nondegenerate pair of one-exciton states, with the polarization of the emitted photons depending on the decay path. The results show that spin nondegeneracy due to quantum-dot asymmetry is a significant obstacle to the realization of an entangled-photon generation device.

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页码：1 / 4

页数：4

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