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

Author(s)
Zhang, Hao; Schleier-Smith, Monika; McConnell, Robert P.; Cuk, Senka; Vuletic, Vladan; ... Show more
Thumbnail
DownloadMcConnell-2013-Generating entangled spin.pdf (615.4Kb)
PUBLISHER_POLICY
Terms of use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Metadata
Show full item record
Abstract
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.
Date issued
2013-12
URI
http://hdl.handle.net/1721.1/85087
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics; MIT-Harvard Center for Ultracold Atoms
Journal
Physical Review A
Publisher
American Physical Society
Citation
McConnell, Robert, Hao Zhang, Senka Ćuk, Jiazhong Hu, Monika Schleier-Smith, and Vladan Vuletić. “Generating Entangled Spin States for Quantum Metrology by Single-Photon Detection.” Phys. Rev. A 88, no. 6 (December 2013). © 2013 American Physical Society
Version: Final published version
ISSN
1050-2947
1094-1622
Collections