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Sub-wavelength interference of thermal light with photon-number resolving detection



Yanhua (. Zhai, Francisco E. Becerra Chavez, Jingyun Fan, Alan L. Migdall


We examine the spatial correlation of thermal-light diffracted through a double-slit using photon-number-resolved detection to directly measure high-order correlations. We observe sinusoidal modulations of the spatial coherence in the diffracted light field. The fringe width can be made arbitrarily small theoretically, and experimentally, we have obtained fringe widths as small as 30 nm.
Applied Physics Letters


Sub-wavelength interference, thermal light, photon-number resolving detection


Zhai, Y. , Becerra, F. , Fan, J. and Migdall, A. (2014), Sub-wavelength interference of thermal light with photon-number resolving detection, Applied Physics Letters, [online], (Accessed June 18, 2024)


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Created September 10, 2014, Updated November 10, 2018