Entangling Single Photons from Independently Tuned Semiconductor Nanoemitters
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- 作者：Kaoru Sanaka ; Alexander Pawlis ; Thaddeus D. Ladd ; Darin J. Sleiter ; Klaus Lischka ; Yoshihisa Yamamoto
- 刊名：Nano Letters
- 出版年：2012
- 出版时间：September 12, 2012
- 年：2012
- 卷：12
- 期：9
- 页码：4611-4616
- 全文大小：353K
- 年卷期：v.12,no.9(September 12, 2012)
- ISSN：1530-6992
文摘
Quantum communication systems based on nanoscale semiconductor devices is challenged by inhomogeneities from device to device. We address this challenge using ZnMgSe/ZnSe quantum-well nanostructures with local laser-based heating to tune the emission of single impurity-bound exciton emitters in two separate devices. The matched emission in combination with photon bunching enables quantum interference from the devices and allows the postselection of polarization-entangled single photons. The ability to entangle single photons emitted from nanometer-sized sources separated by macroscopic distances provides an essential step for a solid-state realization of a large-scale quantum optical network. This paves the way toward measurement-based entanglement generation between remote electron spins localized at macroscopically separated fluorine impurities.