Superresolving multiphoton interferences with independent light sources We propose to use multiphoton interferences from statistically independent light sources in combination with linear optical detection techniques to enhance the resolution in imaging. Experimental results with up to five independent thermal light sources confirm this approach to improve the spatial resolution. Since no involved quantum state preparation or detection is required the experiment can be considered an extension of the Hanbury Brown and Twiss experiment for spatial intensity correlations of order N>2. [1] [1] S. Oppel, Th. Büttner, P. Kok, J. von Zanthier, Phys. Rev. Lett. 109.233603 (2012)
SubRayleigh Quantum Imaging Using Single Photon Sources We propose a technique capable of imaging a distinct physical object with subRayleigh resolution in an ordinary farfield imaging setup using singlephoton sources and linear optical tools only. We exemplify our method for the case of a rectangular aperture and two or four singlephoton emitters obtaining a resolution enhanced by a factor of 2 or 4, respectively. [1] [1] C. Thiel, T. Bastin, J. von Zanthier, G. S. Agarwal, Phys. Rev. A 80, 013820 (2009)
Quantum Imaging with incoherent photons We propose a technique to obtain subwavelength resolution in quantum imaging with potentially 100 % contrast using incoherent light. Our method requires neither pathentangled number states nor multiphoton absorption. The scheme makes use of N photons spontaneously emitted by N atoms and registered by N detectors. It is shown that for coincident detection at particular detector positions a resolution of λ/N can be achieved. [1] [1] C. Thiel, T. Bastin, J. Martin, E. Solano, J. von Zanthier, G. S. Agarwal, Phys. Rev. Lett. 99, 133603 (2007)

