Phys. Rev. A 70, 045801 (2004) [4 pages]Quantum limited force measurement in a cavityless optomechanical systemReceived 19 December 2003; published 4 October 2004 We study the possibility of revealing a weak coherent force by using a pendular mirror as a probe, and coupling this to a radiation field, which acts as the meter, in a cavityless configuration. We determine the sensitivity of such a scheme and show that the use of an entangled meter state greatly improves the ultimate detection limit. We also compare this scheme with that involving an optical cavity. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.70.045801
DOI:
10.1103/PhysRevA.70.045801
PACS:
42.50.Lc, 42.50.Vk, 03.65.Ta
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