Single-Mode Photon-Addition for the Two-Mode Squeezed State and its Statistical Properties
We construct a new optical field, denoted as ρ 0 ≡ ψ ll ψ , ψ l = sech l λ l ! b † l S 2 00 , by adding single-mode l -photon to a two-mode squeezed vacuum state, where S 2 = exp λ a † b † − a b is the two-mode squeezing operator. We find that its partial trace over b -mode will lead to a negative-b...
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Published in | International journal of theoretical physics Vol. 56; no. 8; pp. 2651 - 2658 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
01.08.2017
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | We construct a new optical field, denoted as
ρ
0
≡
ψ
ll
ψ
,
ψ
l
=
sech
l
λ
l
!
b
†
l
S
2
00
, by adding single-mode
l
-photon to a two-mode squeezed vacuum state, where
S
2
=
exp
λ
a
†
b
†
−
a
b
is the two-mode squeezing operator. We find that its partial trace over
b
-mode will lead to a negative-binomial optical field in
a
-mode characteristic of
l
, which exhibits quantum entanglement. The photon number fluctuation of the new optical field both in
a
-mode and in
b
-mode is investigated. We employ the summation method within ordered product of operators to proceed our discussion. |
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ISSN: | 0020-7748 1572-9575 |
DOI: | 10.1007/s10773-017-3421-8 |