Fundamental Quantum Limit to Waveform Estimation

Details Fundamental Quantum Limit to Waveform Estimation Fundamental Quantum Limit to Waveform Estimation

2010-06-28

arxiv.org/abs/1006.5407v3

Physical Review Letters 106, 090401 (2011)

Physics

Quantum Physics

4 pages, v2: major update, added a figure, v3: accepted by PRL

Scientific paper

10.1103/PhysRevLett.106.090401

We derive a quantum Cram\'er-Rao bound (QCRB) on the error of estimating a time-changing signal. The QCRB provides a fundamental limit to the performance of general quantum sensors, such as gravitational-wave detectors, force sensors, and atomic magnetometers. We apply the QCRB to the problem of force estimation via continuous monitoring of the position of a harmonic oscillator, in which case the QCRB takes the form of a spectral uncertainty principle. The bound on the force-estimation error can be achieved by implementing quantum noise cancellation in the experimental setup and applying smoothing to the observations.

Affiliated with

Also associated with

No associations

Rating

Fundamental Quantum Limit to Waveform Estimation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fundamental Quantum Limit to Waveform Estimation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fundamental Quantum Limit to Waveform Estimation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-617443