TY - GEN

T1 - Surpassing Rayleigh limit

T2 - Optics and Photonics for Information Processing XIII 2019

AU - Lee, Kwan Kit

AU - Ashok, Amit

N1 - Funding Information:
Authors gratefully acknowledge support from Defense Advanced Research Projects Agency (DARPA) REVEAL program under contract number HR0011-16-C-0026.
Publisher Copyright:
© 2019 SPIE. Downloading of the abstract is permitted for personal use only.

PY - 2019

Y1 - 2019

N2 - Tsang et al. have shown that the Fisher information of the two incoherent point source separation, below the Rayleigh limit, is finite and achievable using optical modes measurements.1 However, recent claims regarding partial coherence of sources, no matter how small, leads to necessarily zero Fisher information as the source separation decreases below the Rayleigh limit approaching zero have proved to be controversial.2, 3 Thus, the impact of partial coherence on the photon counting optical modal measurements merits further exploration. In this work, we derive the mutual coherence function (image plane) of two partially coherent point sources and find the classical Fisher information of the source separation using both direct image plane and photon counting modal measurements. A classical Fisher information analysis of partially coherent source(s) leads to some rather surprising results for two-point source resolution as the source separation approaches zero. We find that the magnitude of the Fisher information strongly depends on the degree of (positive/negative) partial coherence, which can be understood using an intuitive semi-classical analysis of direct image plane and photon counting modal measurements. We also provide an error analysis of the maximum likelihood estimators for both measurements.

AB - Tsang et al. have shown that the Fisher information of the two incoherent point source separation, below the Rayleigh limit, is finite and achievable using optical modes measurements.1 However, recent claims regarding partial coherence of sources, no matter how small, leads to necessarily zero Fisher information as the source separation decreases below the Rayleigh limit approaching zero have proved to be controversial.2, 3 Thus, the impact of partial coherence on the photon counting optical modal measurements merits further exploration. In this work, we derive the mutual coherence function (image plane) of two partially coherent point sources and find the classical Fisher information of the source separation using both direct image plane and photon counting modal measurements. A classical Fisher information analysis of partially coherent source(s) leads to some rather surprising results for two-point source resolution as the source separation approaches zero. We find that the magnitude of the Fisher information strongly depends on the degree of (positive/negative) partial coherence, which can be understood using an intuitive semi-classical analysis of direct image plane and photon counting modal measurements. We also provide an error analysis of the maximum likelihood estimators for both measurements.

KW - coherent point sources

KW - fisher information

KW - rayleigh limit

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UR - http://www.scopus.com/inward/citedby.url?scp=85075789912&partnerID=8YFLogxK

U2 - 10.1117/12.2528540

DO - 10.1117/12.2528540

M3 - Conference contribution

AN - SCOPUS:85075789912

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Optics and Photonics for Information Processing XIII

A2 - Iftekharuddin, Khan M.

A2 - Awwal, Abdul A. S.

A2 - Diaz-Ramirez, Victor H.

A2 - Marquez, Andres

PB - SPIE

Y2 - 13 August 2019 through 14 August 2019

ER -