Efficient Photonic Qubit Up-and-Down Conversion in Packaged Nonlinear Micro-resonators and Waveguides

In this DARPA SBIR program, the team consisting of OEwaves, Inc. and Columbia University will research, develop, and build a quantum wavelength converter operating between 1530-1565 nm and 400-800 nm wavelengths. The converter will be based on a novel and specially designed single-pass nonlinear crystalline waveguide, with end-to-end losses less than 1.5 dB. The qubit wavelength converter will deliver the same performance as the best existing high-end laboratory frequency converters?which are large, expensive, and fragile table-mounted instruments?but in a robust 100 cc packaged module that is relatively inexpensive and power efficient.