Quantum Imaging by Coherent Enhancement
Name
PhysRevLett.114.100801.pdf
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287.54 KB
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Adobe PDF
Checksum (MD5)
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Author(s)
Low, Guang Hao
Yoder, Theodore James
Chuang, Isaac L.
Date Issued
March 2015
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Low, Guang Hao, Theodore J. Yoder, and Isaac L. Chuang. “Quantum Imaging by Coherent Enhancement.” Physical Review Letters 114.10 (2015). © 2015 American Physical Society
Version
Final published version
Abstract
Conventional wisdom dictates that to image the position of fluorescent atoms or molecules, one should stimulate as much emission and collect as many photons as possible. That is, in this classical case, it has always been assumed that the coherence time of the system should be made short, and that the statistical scaling ∼1/sqrt[t] defines the resolution limit for imaging time t. However, here we show in contrast that given the same resources, a long coherence time permits a higher resolution image. In this quantum regime, we give a procedure for determining the position of a single two-level system and demonstrate that the standard errors of our position estimates scale at the Heisenberg limit as ∼1/t, a quadratic, and notably optimal, improvement over the classical case.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
MIT-Harvard Center for Ultracold Atoms
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.114.100801
