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arXiv · 1602.08929

All-mechanical quantum noise cancellation for accelerometry: broadband with momentum measurements, narrow band without

Kurt Jacobs·Nikolas Tezak·Hideo Mabuchi·Radhakrishnan Balu
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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 [Phys. Rev. Lett. 105, 123601 (2010)], 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.

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Kurt Jacobs, Nikolas Tezak, Hideo Mabuchi, Radhakrishnan Balu. 2016-02-29. All-mechanical quantum noise cancellation for accelerometry: broadband with momentum measurements, narrow band without. https://doi.org/10.1088/2040-8978%2F18%2F3%2F034002

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