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Title: Realization of four-level qudits using biphotons
Authors: Moreva, E.V.
Maslennikov, G.A. 
Straupe, S.S.
Kulik, S.P.
Issue Date: 2006
Citation: Moreva, E.V., Maslennikov, G.A., Straupe, S.S., Kulik, S.P. (2006). Realization of four-level qudits using biphotons. Physical Review Letters 97 (2) : -. ScholarBank@NUS Repository.
Abstract: The novel experimental realization of four-level optical quantum systems (ququarts) is presented. We exploit the polarization properties of the frequency nondegenerate biphoton field to obtain such systems. A simple method that does not rely on am interferometer is used to generate and measure the sequence of states that can be used in quantum key distribution protocol. © 2006 The American Physical Society.
Source Title: Physical Review Letters
ISSN: 00319007
DOI: 10.1103/PhysRevLett.97.023602
Appears in Collections:Staff Publications

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