Cloning and cryptography with quantum continuous variables
نویسندگان
چکیده
منابع مشابه
Cloning and Cryptography with Quantum Continuous Variables⋆
The cloning of quantum variables with continuous spectra is investigated. We define a Gaussian 1-to-2 cloning machine, which copies equally well two conjugate variables such as position and momentum or the two quadrature components of a light mode. The resulting cloning fidelity for coherent states, namely F = 2/3, is shown to be optimal. An asymmetric version of this Gaussian cloner is then us...
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ژورنال
عنوان ژورنال: The European Physical Journal D - Atomic, Molecular and Optical Physics
سال: 2002
ISSN: 1434-6060,1434-6079
DOI: 10.1140/epjd/e20020025