| KIM, Myungshik, W. SON, Vladimír BŮŽEK a Peter KNIGHT. EnEtanglement by a beamsplitter: Nonclassicality as a prerequisite for entanglement. Physical Review A. New York: American Physical Society, 2002, roč. 65, č. 03, s. 032323-1;02323-7, 7 s. ISSN 1050-2947. |
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@article{484389,
author = {Kim, Myungshik and Son, W. and Bůžek, Vladimír and Knight, Peter},
article_location = {New York},
article_number = {03},
keywords = {quantum information; entanglement; linear optical elements},
language = {eng},
issn = {1050-2947},
journal = {Physical Review A},
title = {EnEtanglement by a beamsplitter: Nonclassicality as a prerequisite for entanglement},
volume = {65},
year = {2002}
}
TY - JOUR
ID - 484389
AU - Kim, Myungshik - Son, W. - Bůžek, Vladimír - Knight, Peter
PY - 2002
TI - EnEtanglement by a beamsplitter: Nonclassicality as a prerequisite for entanglement
JF - Physical Review A
VL - 65
IS - 03
SP - 032323-1;02323-7
EP - 032323-1;02323-7
PB - American Physical Society
SN - 10502947
KW - quantum information
KW - entanglement
KW - linear optical elements
N2 - A beam splitter is a simple, readily available device which can act to entangle the output optical fields. We show that a necessary condition for the fields at the output of the beam splitter to be entangled is that the pure input states exhibit nonclassical behavior. We generalize this proof for arbitrary (pure or impure) Gaussian input states. Specifically, nonclassicality of the input Gaussian fields is a necessary condition for entanglement of the field modes with the help of the beam splitter. We conjecture that this is a general property of the beam splitter: Nonclassicality of the inputs is a necessary condition for entangling fields in the beam splitter.
ER -
KIM, Myungshik, W. SON, Vladimír BŮŽEK a Peter KNIGHT. EnEtanglement by a beamsplitter: Nonclassicality as a prerequisite for entanglement. \textit{Physical Review A}. New York: American Physical Society, 2002, roč.~65, č.~03, s.~032323-1;02323-7, 7 s. ISSN~1050-2947.
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