Entangling Single Photons from Independently Tuned Semiconductor Nanoemitters

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...

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Bibliographic Details
Published in:Nano letters 2012-09, Vol.12 (9), p.4611-4616
Main Authors: Sanaka, Kaoru, Pawlis, Alexander, Ladd, Thaddeus D, Sleiter, Darin J, Lischka, Klaus, Yamamoto, Yoshihisa
Format: Article
Language:English
Subjects:
Communication systems
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Devices
Electron spin
Emission
Entanglement
Equipment Design
Equipment Failure Analysis
Exact sciences and technology
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Materials science
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Nanostructure
Nanostructures - chemistry
Nanostructures - ultrastructure
Nanotechnology - instrumentation
Particle Size
Photons
Physics
Quantum wells
Selenium Compounds - chemistry
Semiconductors
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Zinc Compounds - chemistry
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Summary: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.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl301911t