Coherent optical processing

A. Kozma

Masoud Ghalaii, A. T. Rezakhani

Using coherent states in optical quantum process tomography is a practically relevant approach. Here we develop a framework for complete characterization of quantum-optical processes in terms of normally-ordered moments by using coherent states as probes. We derive the associated superoperator tensors for several optical processes. We also show that our technique can be used to determine nonclassicality features of quantum-optical states and processes. Furthermore, we investigate identification of multimode Gaussian processes and show that the number of necessary probe coherent states scales linearly with the number of modes.

B. V. K. Vijaya Kumar

Chuanhong Zhou, James H. Andrews, Michael Crescimanno

Coherent perfect processes enable high optical efficiencies in optical conversion phenomena such as coherent perfect absorption or coherent perfect polarization rotation. A linear optical coherent perfect process based on Faraday rotation has been evaluated experimentally, achieving contrast limited by other optical components of the system and demonstrating like-parity resonance doublets above threshold.

Shanhui Fan, Mehmet Fatih Yanik

We show that light can be stopped and stored coherently with an all-optical adiabatic bandwidth compression process, without any coherent or resonant light-matter interactions. Such a process overcomes the fundamental bandwidth-delay constraint in optics.

Joseph W. Goodman