Quantum Communication Laboratory

The quantum communication laboratory is located in the Department of Quantum Science. The lab contains 3 large ultra-stable and vibration isolated optical benches in a temperature controlled dust proof room. The laboratory contain many state of the art laser sources, including two frequency doubled Innolight Nd:YAG lasers producing beams at 1064 nm and 532 nm, one ultra-stable Innolight Nd:YAG laser at 1064 nm, one Toptica tunable diode laser producing light from the visible spectrum to the near infrared as well as a NP Photonics fibre laser source at 1550 nm. These sources are used to pump optical parametric amplifiers of various geometries to produce non-classical states of light such as squeezed states and entangled states. To test quantum communication protocols, we have access to fibre optic spools of varying length as well as in-ground dark fibre loops from the Australian Capital Territory Icon network that are deployed in and around the National Parliamentary Triangle of Canberra. The lab has a suite of FPGA platforms from National Instruments to provide real time data processing capabilities. These advanced control systems allow conditional data acquisition and automated relocking of the optical phases in our experiments. We have also developed software and electronic interfaces to the National Instrument FPGA system to allow for a versatile digital platform for controlling quantum optics experiments. Supporting the digital data systems, we also have a range of electronic spectrum analysers and a network analyser that can be used to debug our systems.

A PhD student conducting an optical experiment in the Quantum Communications Laboratory at the Australian National University in Canberra.