A
CCEPTED
P
APERS
2001

M.Sohma and O.Hirota,
Information capacity formula of quantum optical channels,
Recent research development in physics,
,
Ref No:TRN/PHY/J/H0015, June 2001.
P
UBLISHED
P
APERS
2002

M.Sohma and O.Hirota,
Squeezing is good at low information rate,
Physical Review A,
vol.65, no2, 022319 , 2002.
2001

S. van Enk and O.Hirota,
Entangled coherent state:
teleportation and decoherence,
Physical Review A,
,
vol.64, no2, 022313, 2001.

K.Kurokawa and O.Hirota,
Properties of quantum reliability function and its applications to several quantum signals,
Electronics and communications in Japan, Part 3,2001
, vol.84, no.9, pp.3141, 2001.
2000

A.Tomita and O.Hirota,
Security of classical noisebased cryptography,
Journal of Optics B
, vol.2, no.6, pp.705710, 2000.

A.S.Holevo, M.Sohma, and O.Hirota,
Error exponents for quantum channels with constrained inputs,
Report on Mathematical Physics
vol.46, no.3, pp.343358, 2000.

M.Sohma and O.Hirota,
Binary discretization for quantum continuous channels,
Physical Review A.
vol.62, no.5, pp.05231214, 2000.

O.Hirota,
A foundation of quantum channels with super additiveness for
Shannon information,
Applicable Algebra in Eng. Communication and Computing
,
vol10, no.4/5, pp.401423, 2000.

K.Kurokawa and O.Hirota,
Properties of quantum reliability function
and its applications to
several quantum signals,
Transactions of the IEICE A,
vol.J83A, no.1, pp.5766, 2000. (in Japanese)
1999

T.S.Usuda, I.Takumi, M.Hata, and O.Hirota,
Minimum error detection of
classical linear code sending through a quantum channel,
Physics Letters. A,
256, pp.104108, 1999.

M.Sasaki, S.Barnett, R.Jozsa, M.Osaki, and O.Hirota,
Accessible information and optimal strategies
for real symmetrical quantum sources,
Physical Review. A
vol.59, no.5, pp.33253335, 1999.

M.Ban, K.Kurokawa, and O.Hrota,
Cutoff rate performance of
quantum communication channels
with symmetric states,
Journal of Optics B; Quantum and Semiclassical Optics,
vol1, pp.206218, 1999.

A.S.Holevo, M.Sohma, and O.Hirota,
Capacity of quantum Gaussian channels,
Physical Review A,
vol.59, no.3, pp.18201828, 1999.

K.Kato, M.Osaki, and O.Hirota,
Derivation of classical capacity
of quantum channel for discrete information source,
Physics Letters A,
251, pp.157163, 1999.

K.Kato, M.Osaki, M.Sasaki, and O.Hirota,
Quantum detection and mutual information for QAM and PSK signals,
IEEE Transactions on communications,
vol.47, no.2, 1999.
1998

M.Osaki, T.S.Usuda and O.Hirota,
Group covariant detection for a threephase shift keyed signal,
Physics Letters A,
245, pp.189196,1998.

M.Ban, K.Kurokawa, and O.Hirota,
Cutoff rate for quantum communication channels
with entangled measurement,
Quantum and Semiclassical Optics,
10, pp.712, 1998.

M.Sasaki, K.Kato, M.Izutsu, and O.Hirota,
Quantum channels showing superadditivity in classical capacity,
Physical Review A,
vol.58, no.1, 1998.

M.Sasaki, T.S.Usuda, M.Izutsu, and O.Hirota,
Realization of a collective decoding of codeword states,
Physical Review A,
vol.58, no.1, 1998.

M.Osaki, M.Ban, and O.Hirota,
The maximum mutual information
without coding for binary quantum state signals,
Journal of Modern Optics,
vol.45, no.2, pp.269282, 1998.
1997

M.Sasaki, R.Momose, and O.Hirota,
Quantum detection for onoff keyed mixed state
with small amount of thermal noise,
Physical Review A,
vol.55, no.4, pp.32223225, 1997.

M.Ban, K.Kurokawa, R.Momose, and O.Hirota,
Optimum measurements for discrimination
among symmetric quantum states
and parameter estimation,
International Journal of Theoretical Physics,
vol.36, no.6, pp.12691288, 1997.

M.Sasaki, K.Kato, M.Izutsu, and O.Hirota,
A demonstration of superadditivity
in the classical capacity of a quantum channel,
Physics Letters A,
vol.236, pp.14, 1997.

M.Sasaki, R.Momose, and O.Hirota,
Quantum detection for onoff keyed mixedstate
signals with a small amount of thermal noise,
Physical Review A,
vol.55, no.4, pp.3223225, 1997.

M.Sasaki and O.Hirota,
Quantum interference control for optimum decision between binary quantum
state signals,
Physics Letters A, vol.224, pp.213219, 1997.

M.Ban, K.Yamazaki, and O.Hirota,
Accessible information in combined and sequential quantum measurement
on a binary state signal,
Physical Review A, vol.55, no.1, pp.2226, 1997.
1996

M.Sasaki, T.Usuda, O.Hirota, and A.S.Holevo,
Application of JaynesCummings model
for detection of nonorthogonal quantum states,
Physical Review A,
vol.53, no.3, pp.12731279, 1996.

M.Sasaki and O.Hirota,
Some examples of optimum decision
for nonorthogonal quantum states,
Physics Letters A,
vol.210, pp.2125, 1996.

O.Hirota, M.Osaki, M.Sasaki, and M.Ban,
JaynesCummings model as quantum channel and
quantum interference effect,
The Review of Laser Engineering,
vol.24, no.2, pp.261269, 1996.

M.Sasaki and O.Hirota,
An optimum decision scheme
with unitary control process for binary quantum state signals,
Physical Review A,
vol.54, no.4, pp.27282736, 1996.

M.Osaki, M.Ban, and O.Hirota,
Derivation of the optimum detection operator
and its physical interpretation
for coherent state signals,
Physical Review A,
vol.54, no.2, pp.16911701, 1996.

M.Ban, M.Osaki, and O.Hirota,
Upper bound of the accessible information and
lower bound of th Bayes cost
in quantum signal detection processes,
Physical Review A,
vol.54, no.4, pp.27182727, 1996.

M.Ban, M.Osaki, and O.Hirota,
Optimizations of quantum measurement processes
for signal detection and information transmission
in quantum systems,
Journal of Modern Optics,
vol.43, no.11, pp.23372354, 1996.
1995

V.P.Belavkin, O.Hirota, and R.Hudson,
The world of quantum noise and fundamental output processes,
Quantum communication and measurement,
Plenum press, edited by Belavkin, Hirota, and Hudson, 1995.

M.Sasaki, T.S.Usuda, and O.Hirota,
Physical aspect of improvement of
quantum noise characteristics caused by
unitary transform with a nonlinear optical medium,
Physical Review A,
vol.51, pp.17021705, 1995.

O.Hirota,
Role of Schödinger cat state in quantum information,
Annals of the New York academy of science,
vol.755, pp.863,
1995.

T.S.Usuda, and O.Hirota,
An example of received quantum state control,
Quantum communication and measurement,
Plenum press, edited by Belavkin, Hirota, and Hudson, 1995.

R.Momose, M.Osaki, M.Ban, M.Sasaki, and O.Hirota,
On a relation between quantum interference
and standard quantum limit,
In
Proc. of 4th International conf. on squeezed state &
uncertainty relation, NASA Proc. Series,
1995.

M.Osaki, H.Kozuka, and O.Hirota,
Physical meaning of optimum measurement process
in quantum detection theory,
In
Proc. of 4th International conf. on squeezed state &
uncertainty relation, NASA Proc. Series,
1995.

O.Hirota,
Noncausality and quantum communication theory,
Research Review, Research Institute of Tamagawa University,
no.1, pp.1, 1995.
1994

T.S.Usuda, T.Satoh, K.Yamazaki, and O.Hirota,
Signal to noise ratio of optical system consisting of squeezer
and Kerr medium,
Journal of Modern Optics,
vol.41, pp.22752289, 1994.

O.Hirota,
Conditional quantum channel and certain of its construction,
Journal of Open system & information dynamics,
vol.2, pp.157175. 1994.

O.Hirota and Y.Suematsu,
Quantum intensity noise of
directly modulated lasers diode influenced
by reflected waves,
Transaction of IEICE Japan,
vol.E65, no.2, 1981.

O.Hirota, Y.Suematsu, and K.Kwok,
Enhancement effect of high frequency noise properties
of injection lasers due to reflected waves,
Optics Communications,
vol.33, no.2, pp.136, 1980.

O.Hirota, Y.Suematsu, and K.Kwok,
Properties of intensity noise of laser diode
due to reflected waves from single mode fiber and its reduction,
IEEE Journal of Quantum Electronics,
vol.QE17, no.6, pp.1014, 1980.

O.Hirota and Y.Suematsu,
Noise properties of injection lasers due to reflected waves,
IEEE Journal of Quantum Electronics,
vol.QE15, no.3, pp.142, 1979.
B
OOKS
Books

O.Hirota, A.S.Holevo, and C.M.Caves,
Quantum communication, computing, and measurement,
Plenum Press, 1997.

V.P.Belavkin, O.Hirota, and R.L.Hudson,
Quantum communication and measurement,
Plenum Press, 1996.

Squeezed light, Elsevier, 1992.

C.Bendjaballah, O.Hirota, and S.Reynaud,
Quantum aspect of optical communications,
Lecture Note in Physics,
Springer, LNP378, 1991.
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