Searching for decoherence-free subspaces in cavity quantum electrodynamics
نویسندگان
چکیده
منابع مشابه
Decoherence-Free Subspaces for Quantum Computation
Decoherence in quantum computers is formulated within the semigroup approach. The error generators are identified with the generators of a Lie algebra. This allows for a comprehensive description which includes as a special case the frequently assumed spin-boson model. A generic condition is presented for errorless quantum computation: decoherence-free subspaces are spanned by those states whic...
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It was shown recently @D. A. Lidar et al., Phys. Rev. Lett. 81, 2594 ~1998!# that within the framework of the semigroup Markovian master equation, decoherence-free ~DF! subspaces exist which are stable to first order in time to a perturbation. Here this result is extended to the non-Markovian regime and generalized. In particular, it is shown that within both the semigroup and the non-Markovian...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2004
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.70.053825