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"Modes of the universe" study of two-photon deterministic, passive quantum logical gates | | Julio Gea-Banacloche
; Leno M. Pedrotti
; | | Date: |
16 Nov 2010 | | Abstract: | We use the "modes of the universe" approach to study a cavity-mediated
two-photon logical gate recently proposed by Koshino, Ishizaka and Nakamura. We
clarify the relationship between the more commonly used input-output formalism,
and that of Koshino et al., and show that some key elements of this gate had
been anticipated by other authors. We conclude that their proposed gate can
work both in the good and bad cavity limits, provided only that the pulses are
long enough. Our formalism allows us to estimate analytically the size of the
various error terms, and to follow the spectral evolution of the field + cavity
system in the course of the interaction. | | Source: | arXiv, 1011.3851 | | Services: | Forum | Review | PDF | Favorites | |
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