Classical Pendulum Feels Quantum Back-Action
(Sprache: Englisch)
In this thesis, ultimate sensitive measurement for weak force imposed on a suspended mirror is performed with the help of a laser and an optical cavity for the development of gravitational-wave detectors. According to the Heisenberg uncertainty principle,...
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In this thesis, ultimate sensitive measurement for weak force imposed on a suspended mirror is performed with the help of a laser and an optical cavity for the development of gravitational-wave detectors. According to the Heisenberg uncertainty principle, such measurements are subject to a fundamental noise called quantum noise, which arises from the quantum nature of a probe (light) and a measured object (mirror). One of the sources of quantum noise is the quantum back-action, which arises from the vacuum fluctuation of the light. It sways the mirror via the momentum transferred to the mirror upon its reflection for the measurement. The author discusses a fundamental trade-off between sensitivity and stability in the macroscopic system, and suggests using a triangular cavity that can avoid this trade-off. The development of an optical triangular cavity is described and its characterization of the optomechanical effect in the triangular cavity is demonstrated. As a result, for the first time in the world the quantum back-action imposed on the 5-mg suspended mirror is significantly evaluated. This work contributes to overcoming the standard quantum limit in the future.
Inhaltsverzeichnis zu „Classical Pendulum Feels Quantum Back-Action “
Introduction.- Theory of Optomechanics.- Application of Optomechanics.- Optical Torsional Spring.- Experimental Setup.- Experimental Results.- The Future.- Conclusions.
Autoren-Porträt von Nobuyuki Matsumoto
Dr.Nobuyuki Matsumoto The university of Tokyo, Physics Department matsumoto@granite.phys.s.u-tokyo.ac.jp
Bibliographische Angaben
- Autor: Nobuyuki Matsumoto
- 2015, 1st ed. 2016, XII, 103 Seiten, 5 farbige Abbildungen, Masse: 16 x 24,1 cm, Gebunden, Englisch
- Verlag: Springer, Berlin
- ISBN-10: 4431558802
- ISBN-13: 9784431558804
- Erscheinungsdatum: 12.01.2016
Sprache:
Englisch
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