Generating entangled spin states for quantum metrology by single-photon detection

We propose and analyze a probabilistic but heralded scheme to generate pure, entangled, non-Gaussian states of collective spin in large atomic ensembles by means of single-photon detection. One photon announces the preparation of a Dicke state, while two or more photons announce Schrödinger cat sta...

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Main Authors: Zhang, Hao (Contributor), Schleier-Smith, Monika (Author), McConnell, Robert P. (Contributor), Cuk, Senka (Contributor), Vuletic, Vladan (Contributor), Hu, Jiazhong, Ph. D. Massachusetts Institute of Technology (Author)
Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Research Laboratory of Electronics (Contributor), MIT-Harvard Center for Ultracold Atoms (Contributor), Hu, Jiazhong (Contributor)
Format: Article
Language:English
Published: American Physical Society, 2014-02-24T19:45:49Z.
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Online Access:Get fulltext
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100 1 0 |a Zhang, Hao  |e author 
100 1 0 |a Massachusetts Institute of Technology. Department of Physics  |e contributor 
100 1 0 |a Massachusetts Institute of Technology. Research Laboratory of Electronics  |e contributor 
100 1 0 |a MIT-Harvard Center for Ultracold Atoms  |e contributor 
100 1 0 |a McConnell, Robert P.  |e contributor 
100 1 0 |a Zhang, Hao  |e contributor 
100 1 0 |a Cuk, Senka  |e contributor 
100 1 0 |a Hu, Jiazhong  |e contributor 
100 1 0 |a Vuletic, Vladan  |e contributor 
700 1 0 |a Schleier-Smith, Monika  |e author 
700 1 0 |a McConnell, Robert P.  |e author 
700 1 0 |a Cuk, Senka  |e author 
700 1 0 |a Vuletic, Vladan  |e author 
700 1 0 |a Hu, Jiazhong, Ph. D. Massachusetts Institute of Technology  |e author 
245 0 0 |a Generating entangled spin states for quantum metrology by single-photon detection 
260 |b American Physical Society,   |c 2014-02-24T19:45:49Z. 
856 |z Get fulltext  |u http://hdl.handle.net/1721.1/85087 
520 |a We propose and analyze a probabilistic but heralded scheme to generate pure, entangled, non-Gaussian states of collective spin in large atomic ensembles by means of single-photon detection. One photon announces the preparation of a Dicke state, while two or more photons announce Schrödinger cat states. The method produces pure states even for finite photon detection efficiency and weak atom-photon coupling. The entanglement generation can be made quasideterministic by means of repeated trial and feedback, enabling metrology beyond the standard quantum limit. 
520 |a National Science Foundation (U.S.) 
520 |a United States. Defense Advanced Research Projects Agency. System Science Division. Defense Sciences Office (Quantum-Assisted Sensing and Readout) 
520 |a United States. Army Research Office. Multidisciplinary University Research Initiative 
520 |a MIT-Harvard Center for Ultracold Atoms 
546 |a en_US 
655 7 |a Article 
773 |t Physical Review A