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Proceedings Paper

Multiphoton entanglement engineering via projective measurements
Author(s): Christian Schmid; Nikolai Kiesel; Witlef Wieczorek; Reinhold Pohlner; Harald Weinfurter
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Paper Abstract

We present strategies to obtain different classes of three and four photon entangled symmetric states from a single experimental setup. The basic idea originates from the property of the symmetric Dicke state with two excitations to connect the two inequivalent types of genuine tripartite entanglement. We experimentally confirm the distinct types of entanglement of the observed states. We further propose an extension of the applied scheme that allows one to obtain different classes of four-photon entanglement by adding a fifth photon. The requirement of a single fifth photon is currently a technical challenge, and thus we consider the approach of using a strongly attenuated weak coherent beam instead.

Paper Details

Date Published: 10 September 2007
PDF: 10 pages
Proc. SPIE 6780, Quantum Communications Realized, 67800E (10 September 2007); doi: 10.1117/12.734697
Show Author Affiliations
Christian Schmid, Max-Planck-Institut für Quantenoptik (Germany)
Ludwig-Maximilians-Univ. (Germany)
Nikolai Kiesel, Max-Planck-Institut für Quantenoptik (Germany)
Ludwig-Maximilians-Univ. (Germany)
Witlef Wieczorek, Max-Planck-Institut für Quantenoptik (Germany)
Ludwig-Maximilians-Univ. (Germany)
Reinhold Pohlner, Max-Planck-Institut für Quantenoptik (Germany)
Ludwig-Maximilians-Univ. (Germany)
Harald Weinfurter, Max-Planck-Institut für Quantenoptik (Germany)
Ludwig-Maximilians-Univ. (Germany)


Published in SPIE Proceedings Vol. 6780:
Quantum Communications Realized
Yasuhiko Arakawa; Masahide Sasaki; Hideyuki Sotobayashi, Editor(s)

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