With recent and rapid progress, compound semiconductor on insulator (CSOI) photonics is transforming quantum technologies by providing new functionalities and capabilities not possible with traditional, silicon-based photonics. In this talk, I will discuss how we can leverage the strong nonlinearities and low propagation loss of AlGaAs-on-insulator photonics for quantum computing and communications. I will present recent results on entangled-pair and squeezed-light generation, on-chip frequency bin processors based on integrated modulators and pulse shapers, and architectures for high-dimensional graph-state generation for distributing entanglement across quantum networks.

Quantum information technologies are expected to enable transformative technologies with wide-ranging global impact. Towards realizing this tremendous promise, efforts have emerged to pursue quantum architectures capable of supporting distributed quantum computing, networks and quantum sensors. Quantum architecture at scale would consist of interconnected physical systems, many operating at their individual classical or quantum limit. Such scalable quantum architecture requires modeling that accurately describes these mesoscopic hybrid phenomena. I will discuss predictive theoretical and computational approaches to study dynamics, decoherence, and correlations in such hybrid quantum technologies.

Analog quantum simulators rely on programmable quantum devices to emulate Hamiltonians describing various physical phenomenon. Photonic coupled cavity arrays are a promising platform for realizing such devices. Using a silicon photonic coupled cavity array made up of 8 high quality-factor resonators and equipped with specially designed thermo-optic island heaters for independent control of cavities, we demonstrate a programmable device implementing tight-binding Hamiltonians with access to the full eigen-energy spectrum. We report a ~50% reduction in the thermal crosstalk between neighboring sites of the cavity array compared to traditional heaters, and then present a control scheme to program the cavity array to a given tight-binding Hamiltonian.

A variety of photonic devices is required for the implementation of quantum sensors, computers and communication networks. This presentation will describe the current state-of-the-art and future possibilities for key photonic devices that enable quantum technologies, such as photon sources, photon detectors, optical amplifiers, electro-optic modulators and paths towards the integration of these devices. Specific requirements on these devices that come from quantum technology demands will be explored and technology solution approaches will be described. The presentation will also explore business prospects for photonic devices in the quantum markets, starting from the present and extrapolating to future opportunities.