1,183 research outputs found
Pulsed homodyne Gaussian quantum tomography with low detection efficiency
Pulsed homodyne quantum tomography usually requires a high detection
efficiency limiting its applicability in quantum optics. Here, it is shown that
the presence of low detection efficiency () does not prevent the
tomographic reconstruction of quantum states of light, specifically, of
Gaussian type. This result is obtained by applying the so-called "minimax"
adaptive reconstruction of the Wigner function to pulsed homodyne detection. In
particular, we prove, by both numerical and real experiments, that an effective
discrimination of different Gaussian quantum states can be achieved. Our
finding paves the way to a more extensive use of quantum tomographic methods,
even in physical situations in which high detection efficiency is unattainable
Combinatorial algorithms for inverse network flow problems
"(Revised January 25, 1998)"--T.p. -- "February 1998."--Cover.Includes bibliographical references (p. 23-25).Supported by a grant from the United Parcel Service and a contract from the Office of Naval Research. ONR N00014-96-1-0051Ravindra K. Ahuja, James B. Orlin
Inverse optimization.
"(Revised January 25, 1998)"--T.p. -- "February 1998."--Cover.Includes bibliographical references (p. 22-24).Supported by a grant from the United Parcel Service and a contract from the Office of Naval Research. ONR N00014-96-1-0051Ravindra K. Ahuja, James B. Orlin
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