Please use this identifier to cite or link to this item:
Title: Real-world quantum sensors: Evaluating resources for precision measurement
Authors: Thomas-Peter, N.
Smith, B.J.
Datta, A.
Zhang, L.
Dorner, U. 
Walmsley, I.A.
Issue Date: 8-Sep-2011
Citation: Thomas-Peter, N., Smith, B.J., Datta, A., Zhang, L., Dorner, U., Walmsley, I.A. (2011-09-08). Real-world quantum sensors: Evaluating resources for precision measurement. Physical Review Letters 107 (11) : -. ScholarBank@NUS Repository.
Abstract: Quantum phenomena present in many experiments signify nonclassical behavior, but do not always imply superior performance. Quantifying the enhancement achieved from quantum behavior needs careful analysis of the resources involved. We analyze the case of parameter estimation using an optical interferometer, where increased precision can in principle be achieved using quantum probe states. Common performance measures are examined and some are shown to overestimate the improvement. For the simplest experimental case we compare the different measures and exhibit this overestimation explicitly. We give the preferred analysis of these experiments and calculate benchmark values for experimental parameters necessary to realize a precision enhancement. Our analysis shows that unambiguous real-world enhancements in optical quantum metrology with fixed photon number are yet to be attained. © 2011 American Physical Society.
Source Title: Physical Review Letters
ISSN: 00319007
DOI: 10.1103/PhysRevLett.107.113603
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.