All-mechanical quantum noise cancellation for accelerometry: broadband with momentum measurements, narrow band without. (25th February 2016)

• Record Type: Journal Article
• Authors: Jacobs, Kurt; Tezak, Nikolas; Mabuchi, Hideo; Balu, Radhakrishnan
• Is Part Of: Journal of optics. Volume 18:Number 3(2016:Mar.)
• Publication Date: 2016-02-25
• Subjects: quantum metrology -- optomechanics -- force sensing -- acelerometry -- quantum nano-electromechanics -- continuous measurement; 03.67.-a -- 03.65.Yz -- 05.70.Ln -- 05.40.Ca; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/18/3/034002
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We show that the ability to make direct measurements of momentum, in addition to the usual direct measurements of position, allows a simple configuration of two identical mechanical oscillators to be used for broadband back-action-free force metrology. This would eliminate the need for an optical reference oscillator in the scheme of Tsang and Caves (2010 Phys. Rev. Lett. 105 123601 ), along with its associated disadvantages. We also show that if one is restricted to position measurements alone then two copies of the same two-oscillator configuration can be used for narrow-band back-action-free force metrology.