Alexander L. Gaeta [Columbia University]

Abstract

Quantum frequency conversion is the process by which the wavelength of a light field is converted to another wavelength while still fully maintaining its quantum state. I will describe our recent research that utilizes the nonlinear optical process of four-wave mixing to perform ultralow noise quantum frequency conversion with efficiencies approaching 100%. We also show how this nonlinear parametric process can be used to realize other novel quantum phenomena in the frequency domain, including Hong-Ou-Mandel interference, near-deterministic single-photon generation, quantum communication, and an N-way beamsplitter.

Research Interests 

Quantum and nonlinear photonics