Quantum ghost imaging with improved diffraction limit

Ronald E. Meyers, Keith S. Deacon

Lian Chen, Mingyang Zheng, Lexiang Zhang +1 more

To improve the spatial resolution beyond the Rayleigh diffraction limit, the ghost imaging experiment with entangled multiphoton is performed. A correlation measurement system is designed for the experiment. The FPGA TDC is used to decrease the accidental coincidence counting rate. The high precision stepping motor which is automatic controlled improve the spatial resolution and simplify the experimental process.

R. I. Khakimov, B. M. Henson, D. K. Shin +4 more

Yoshiki O-oka, Hiroka Otomo, Ryota Keyaki +1 more

The time domain is a one-dimensional space, and hence the diffraction–interference in three dimensions is absent. However, ghost diffraction–interference (GD) building on a two-particle-enabled Young's experiment is still relevant. This is because fixed-timing detection can emulate pinhole detection at the core of GD. Here is demonstrated a different class of GD free of pinhole detection in the time domain. The bucket detection in ghost imaging enables it, which is best paraphrased as “ghost diffraction–interference via ghost imaging.”

A. Gatti, Davide Magatti, Morten Bache +3 more

High-resolution ghost image and ghost diffraction are performed by using a single source of pseudo-thermal speckle light divided by a beam splitter. By only operating on the optical setup of the light in the reference arm, that never interacted with the object, we are able to pass from the image to the diffraction pattern. The product of spatial resolutions of the ghost image and ghost diffraction experiments is shown to overcome a limit which was formerly thought to be achievable only with entangled photons. A complementarity between the spatial coherence of the beams and their mutual correlation is demonstrated by showing a complementarity between ghost diffraction and ordinary diffraction patterns.

Hugo Defienne, Warwick P. Bowen, Maria V. Chekhova +5 more