Department of Nuclear and Atomic Physics Seminars

“Programmable quantum interference using white paint ”

by Dr. Ravitej Uppu (University of Twente, Netherlands.)

Thursday, January 7, 2016 from to (Asia/Kolkata)
at TIFR ( P - 305 )
Description
Optical systems form a versatile platform for quantum information processing due to the ease in generation and manipulation of photons. For performing any operation, it is essential to have ultimate control on the transport of photons. Scattering of light from random inhomogeneities disrupts light transport and is generally considered detrimental to achieve control. However, a paradigm shift has occured through complex wavefront shaping that harnesses scattering for applications in imaging and focusing of light. Wavefront shaping has recently been applied in creating arbitrary multiport circuits such as 2x2 or 2xN beamsplitters in white paint. I will discuss our recent experiments that exploit wavefront shaping to control quantum correlations. The quantum light is generated using a newly developed ultrabright quantum light source. We create a 2x2 beamsplitter in white paint and demonstrate tunable photon bunching at the output ports.