Manipulating mesoscopic multipartite entanglement with atom-light interfaces

Journal Article · Tue Dec 15 00:00:00 EST 2009 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.80.062304· OSTI ID:21352304

Stasinska, J; Rodo, C; Paganelli, S ^[1]; Birkl, G ^[2]; Sanpera, A ^[3]

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1. Grup de Fisica Teorica, Universitat Autonoma de Barcelona and Ministerio de Educacion, 08193 Bellaterra, Barcelona (Spain)
2. Institut fuer Angewandte Physik, Technische Universitaet Darmstadt, 64289 Darmstadt (Germany)
3. Institucio Catalana de Recerca i Estudis Avancats (ICREA), Lluis Companys 23, 08010 Barcelona (Spain)

Entanglement between two macroscopic atomic ensembles induced by measurement on an ancillary light system has proven to be a powerful method for engineering quantum memories and quantum state transfer. Here we investigate the feasibility of such methods for generation, manipulation, and detection of genuine multipartite entanglement (Greenberger-Horne-Zeilinger and clusterlike states) between mesoscopic atomic ensembles without the need of individual addressing of the samples. Our results extend in a nontrivial way the Einstein-Podolsky-Rosen entanglement between two macroscopic gas samples reported experimentally in [B. Julsgaard, A. Kozhekin, and E. Polzik, Nature (London) 413, 400 (2001)]. We find that under realistic conditions, a second orthogonal light pulse interacting with the atomic samples, can modify and even reverse the entangling action of the first one leaving the samples in a separable state.

• OSTI ID: 21352304
• Journal Information: Physical Review. A, Vol. 80, Issue 6; Other Information: DOI: 10.1103/PhysRevA.80.062304; (c) 2009 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
DETECTION
ELECTRON SPIN RESONANCE
ENGINEERING
INTERFACES
OPTICS
PHOTON-ATOM COLLISIONS
QUANTUM ENTANGLEMENT
VISIBLE RADIATION
ATOM COLLISIONS
COLLISIONS
ELECTROMAGNETIC RADIATION
MAGNETIC RESONANCE
PHOTON COLLISIONS
RADIATIONS
RESONANCE