Quantum fluctuations of radiation pressure
Quantum fluctuations of electromagnetic radiation pressure are discussed. We use an approach based on the quantum stress tensor to calculate the fluctuations in velocity and position of a mirror subjected to electromagnetic radiation. Our approach reveals that radiation pressure fluctuations in the case of a coherent state are due to a cross term between vacuum and state dependent terms in a stress tensor operator product. Thus observation of these fluctuations would entail experimental confirmation of this cross term. We first analyze the pressure fluctuations on a single, perfectly reflecting mirror, and then study the case of an interferometer. This involves a study of the effects of multiple bounces in one arm, as well as the correlations of the pressure fluctuations between arms of the interferometer. In all cases, our results are consistent with those previously obtained by Caves using different methods. We argue that the agreement between the different methods supports the reality of the cross term and justifies the methods used in its evaluation.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40230616
- Journal Information:
- Physical Review D, Vol. 64, Issue 4; Other Information: DOI: 10.1103/PhysRevD.64.045010; Othernumber: PRVDAQ000064000004045010000001; 009116PRD; PBD: 15 Aug 2001; ISSN 0556-2821
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
Similar Records
Reduction of radiation-pressure-induced fluctuations in interferometric gravity-wave detectors
Metric fluctuations of an evaporating black hole from backreaction of stress tensor fluctuations