Geometric characterization of separability and entanglement in pure Gaussian states by single-mode unitary operations
نویسندگان
چکیده
Gerardo Adesso, Salvatore M. Giampaolo, and Fabrizio Illuminati* Dipartimento di Fisica “E. R. Caianiello,” Università degli Studi di Salerno, Via S. Allende, I-84081 Baronissi (SA), Salerno, Italy CNR-INFM Coherentia, Napoli, Italy; CNISM, Unità di Salerno, Salerno, Italy; and INFN, Sezione di Napoli-Gruppo Collegato di Salerno, Salerno, Italy Grup d’Informació Quàntica, Universitat Autónoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain Dipartimento di Matematica e Informatica, Università degli Studi di Salerno, Via Ponte don Melillo, I-84084 Fisciano (SA), Salerno, Italy ISI Foundation for Scientific Interchange, Viale Settimio Severo 65, I-10133 Turin, Italy Received 22 July 2007; revised manuscript received 5 September 2007; published 26 October 2007
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