| Observation of entanglement between a quantum dot spin and a single photon. | |
| | |
MedLine Citation:
|
PMID: 23151586 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
Entanglement has a central role in fundamental tests of quantum mechanics as well as in the burgeoning field of quantum information processing. Particularly in the context of quantum networks and communication, a main challenge is the efficient generation of entanglement between stationary (spin) and propagating (photon) quantum bits. Here we report the observation of quantum entanglement between a semiconductor quantum dot spin and the colour of a propagating optical photon. The demonstration of entanglement relies on the use of fast, single-photon detection, which allows us to project the photon into a superposition of red and blue frequency components. Our results extend the previous demonstrations of single-spin/single-photon entanglement in trapped ions, neutral atoms and nitrogen-vacancy centres to the domain of artificial atoms in semiconductor nanostructures that allow for on-chip integration of electronic and photonic elements. As a result of its fast optical transitions and favourable selection rules, the scheme we implement could in principle generate nearly deterministic entangled spin-photon pairs at a rate determined ultimately by the high spontaneous emission rate. Our observation constitutes a first step towards implementation of a quantum network with nodes consisting of semiconductor spin quantum bits. |
| | |
Authors:
|
W B Gao; P Fallahi; E Togan; J Miguel-Sanchez; A Imamoglu |
Related Documents
:
|
23014776 - Bodipy dyes in photodynamic therapy. 23559306 - Quantifying cellular dynamics by fluorescence resonance energy transfer (fret) microscopy. 19405616 - Free energy analysis for adsorption-induced lattice transition of flexible coordination... 16869606 - Force field development for poly(dimethylsilylenemethylene) with the aid of ab initio c... 22735736 - Decellularized ovine esophageal mucosa for esophageal tissue engineering. 22551526 - Spin s = 1 centers: a universal type of paramagnetic defects in nanodiamonds of dynam... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Nature Volume: 491 ISSN: 1476-4687 ISO Abbreviation: Nature Publication Date: 2012 Nov |
Date Detail:
|
Created Date: 2012-11-15 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0410462 Medline TA: Nature Country: England |
Other Details:
|
Languages: eng Pagination: 426-30 Citation Subset: IM |
Affiliation:
|
Institute of Quantum Electronics, ETH Zurich, CH-8093 Zurich, Switzerland. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
| Comments/Corrections | |
Comment In:
|
Nature. 2012 Nov 15;491(7424):343-4
[PMID:
23151575
]
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Quantum-dot spin-photon entanglement via frequency downconversion to telecom wavelength.
Next Document: Little change in global drought over the past 60 years.