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Generating Entangled Spin States for Quantum Metrology by Single-Photon Detection by McConnell, Robert; Zhang, Hao; Ćuk, Senka; Hu, Jiazhong; Schleier-Smith, Monika H.; Vuletić, Vladan is a scholarly article available to read on EtoBox.

What is Generating Entangled Spin States for Quantum Metrology by Single-Photon Detection about?

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 Schr\"odinger cat states. The method produces pure states even for finite photon detection efficiency and weak atom-photon coupling. The entanglement generation can be made quasi-deterministic by means of repeated trial and feedback, enabling metrology beyond the standard quantum limit.

Author

McConnell, Robert; Zhang, Hao; Ćuk, Senka; Hu, Jiazhong; Schleier-Smith, Monika H.; Vuletić, Vladan

Published

2013

Language

EN