Subdiffraction incoherent optical imaging via spatial-mode demultiplexing

@article{Tsang2017SubdiffractionIO,
  title={Subdiffraction incoherent optical imaging via spatial-mode demultiplexing},
  author={Mankei Tsang},
  journal={New Journal of Physics},
  year={2017},
  volume={19}
}
  • M. Tsang
  • Published 9 August 2016
  • Physics
  • New Journal of Physics
I propose a spatial-mode demultiplexing (SPADE) measurement scheme for the far-field imaging of spatially incoherent optical sources. For any object too small to be resolved by direct imaging under the diffraction limit, I show that SPADE can estimate its second or higher moments much more precisely than direct imaging can fundamentally do in the presence of photon shot noise. I also prove that SPADE can approach the optimal precision allowed by quantum mechanics in estimating the location and… 

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Quantum limit to subdiffraction incoherent optical imaging. II. A parametric-submodel approach

  • M. Tsang
  • Physics, Mathematics
    Physical Review A
  • 2021
In a previous paper [M. Tsang, Phys. Rev. A 99, 012305 (2019)], I proposed a quantum limit to the estimation of object moments in subdiffraction incoherent optical imaging. In this sequel, I prove

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Using quantum metrology techniques, it is shown that a simultaneous estimation of the two separations is achievable by a single quantum measurement, with a precision saturating the ultimate limit stemming from the quantum Cramér-Rao bound.

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