Quantum Communication and Related Technologies
Summary :
The standard quantum limit (SQL) for optical communication is imposed by the quantum noise of a laser light (coherent state) and by the quantum noise of a photon absorbing detector (vacuum field fluctuation). In this paper, we will review the origins of the SQL for optical communications and emerging new technologies for surpassing the SQL. An amplitude squeezed state of light has smaller photon counting noise than a coherent state of light. The squeezed amplitude noise of more than 10 dB below the shot noise level was observed in a semiconductor laser. A quantum nondemolition (QND) measurement makes it possible to read signal information without absorbing signal photons, i.e. without destroying signal information. Experimental efforts to realize the QND measurement of photon number are proceeding in several laboratories.
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- IEICE TRANSACTIONS on transactions Vol.E73-E No.10 pp.1598-1610
- Publication Date
- 1990/10/25
- Publicized
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- Special Section INVITED PAPER (Special Issue on Communication Theory and Its Applications)
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Yoshihisa YAMAMOTO, "Quantum Communication and Related Technologies" in IEICE TRANSACTIONS on transactions,
vol. E73-E, no. 10, pp. 1598-1610, October 1990, doi: .
Abstract: The standard quantum limit (SQL) for optical communication is imposed by the quantum noise of a laser light (coherent state) and by the quantum noise of a photon absorbing detector (vacuum field fluctuation). In this paper, we will review the origins of the SQL for optical communications and emerging new technologies for surpassing the SQL. An amplitude squeezed state of light has smaller photon counting noise than a coherent state of light. The squeezed amplitude noise of more than 10 dB below the shot noise level was observed in a semiconductor laser. A quantum nondemolition (QND) measurement makes it possible to read signal information without absorbing signal photons, i.e. without destroying signal information. Experimental efforts to realize the QND measurement of photon number are proceeding in several laboratories.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e73-e_10_1598/_p
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@ARTICLE{e73-e_10_1598,
author={Yoshihisa YAMAMOTO, },
journal={IEICE TRANSACTIONS on transactions},
title={Quantum Communication and Related Technologies},
year={1990},
volume={E73-E},
number={10},
pages={1598-1610},
abstract={The standard quantum limit (SQL) for optical communication is imposed by the quantum noise of a laser light (coherent state) and by the quantum noise of a photon absorbing detector (vacuum field fluctuation). In this paper, we will review the origins of the SQL for optical communications and emerging new technologies for surpassing the SQL. An amplitude squeezed state of light has smaller photon counting noise than a coherent state of light. The squeezed amplitude noise of more than 10 dB below the shot noise level was observed in a semiconductor laser. A quantum nondemolition (QND) measurement makes it possible to read signal information without absorbing signal photons, i.e. without destroying signal information. Experimental efforts to realize the QND measurement of photon number are proceeding in several laboratories.},
keywords={},
doi={},
ISSN={},
month={October},}
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TY - JOUR
TI - Quantum Communication and Related Technologies
T2 - IEICE TRANSACTIONS on transactions
SP - 1598
EP - 1610
AU - Yoshihisa YAMAMOTO
PY - 1990
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E73-E
IS - 10
JA - IEICE TRANSACTIONS on transactions
Y1 - October 1990
AB - The standard quantum limit (SQL) for optical communication is imposed by the quantum noise of a laser light (coherent state) and by the quantum noise of a photon absorbing detector (vacuum field fluctuation). In this paper, we will review the origins of the SQL for optical communications and emerging new technologies for surpassing the SQL. An amplitude squeezed state of light has smaller photon counting noise than a coherent state of light. The squeezed amplitude noise of more than 10 dB below the shot noise level was observed in a semiconductor laser. A quantum nondemolition (QND) measurement makes it possible to read signal information without absorbing signal photons, i.e. without destroying signal information. Experimental efforts to realize the QND measurement of photon number are proceeding in several laboratories.
ER -
English
