Nonlinear Quantum Photonics

Nonlinear integrated photonics provides powerful tools for generating, manipulating, and detecting classical and quantum states of light at the chip scale. Our research develops high-performance nonlinear photonic platforms that combine strong optical nonlinearities, ultralow loss, dispersion engineering, and resonant enhancement to access new regimes of efficient and broadband light–matter interaction. We focus on nonlinear processes for squeezed-light and entangled-photon generation, optical parametric oscillation and amplification, high-dimensional and multiplexed quantum information processing, and high-speed reconfigurable photonics. These efforts aim to enable scalable sources of complex quantum states, low-noise optical amplification, single- and multi-photon nonlinear operations, and broadband nonlinear processors for quantum information science, communications, and sensing.

Current projects in the QPL include:

• Dense quantum information encoding with multiplexed microresonator arrays [collaboration with Cisco]
• Multi-photon entanglement generation and deterministic non-Gaussian state generation 
• High-dimensional frequency bin quantum state encoding
• Integrated photonic squeezed light detectors [with Caltech, UVA, MIT LIGO, and Nexus Photonics]
• Low-threshold optical parametric oscillators and phase-sensitive amplifiers [with MIT LIGO]
• High-speed, broadband reconfigurable nonlinear photonic devices
• Topological nonlinear photonic circuits [with UMD]