Spontaneous four-wave mixing in microring resonators.

Area of Science:

• Quantum optics
• Photonics
• Nonlinear optics

Background:

• Spontaneous four-wave mixing (SFWM) is a key process for generating quantum states of light.
• Microring resonators offer compact and efficient platforms for nonlinear optical processes.
• Understanding and controlling SFWM in resonators is crucial for quantum information technologies.

Purpose of the Study:

• To investigate spontaneous four-wave mixing in a microring resonator.
• To present photon-pair generation rates and biphoton wave functions.
• To establish a method for predicting generation rates from classical device performance.

Main Methods:

• Theoretical analysis of spontaneous four-wave mixing in a microring resonator.
• Numerical simulations to calculate photon-pair generation rates and biphoton wave functions.
• Characterization of device performance in the classical regime.

Main Results:

• Photon-pair generation rates can be accurately predicted from classical device measurements.
• A wide range of biphoton wave functions can be generated by controlling pump pulse duration.
• The study provides a practical approach to engineer quantum states of light.

Conclusions:

• Classical characterization of microring resonators enables prediction of quantum properties.
• Pump pulse duration is a critical parameter for tailoring biphoton wave functions.
• This work facilitates the development of on-chip quantum light sources.