Photonic quantum computing is one of the most promising approaches to universal quantum computation. A general requirement of these systems is the availability of so-called cluster states (highly and precisely entangled states of photons). The stepping stone for the creation of all highly entangled states with high fidelity is a so-called squeezed state of light, which features the most basic non-classical correlation embodied in quantum physics. Our group at the LIGO MIT laboratory has pioneered the development of continuous-wave broadband squeezed vacuum sources. However, the generation and handling of these fragile states is complex and resource-intensive, limiting the potential of the associated technologies.

The goal of this project is to address these challenges and to develop technologies that render the generation and delivery of squeezed states more robust and therefore widely deployable. A variety of precision optical experiments that are limited by quantum noise would also benefit from the use of these states to improve their sensitivity.