Synthetic Gauge Fields in a Single Optomechanical Resonator

Area of Science:

• Quantum physics
• Optomechanics
• Condensed matter physics

Background:

• Synthetic gauge fields are crucial for quantum simulations, topological matter, and protected excitation transport.
• Previous demonstrations include ultracold atoms in optical lattices and coupled resonator arrays.

Purpose of the Study:

• To experimentally demonstrate a synthetic gauge field in the virtual lattices of bosonic modes within a single optomechanical resonator.
• To explore ultrafast gauge field tuning with a large dynamic range.

Main Methods:

• Utilizing degenerate clockwise and counterclockwise optical modes and a mechanical mode in an optomechanical resonator.
• Controlling the synthetic gauge field by tuning the phase of driving lasers.
• Observing nonreciprocal conversion between modes for different synthetic magnetic fluxes.

Main Results:

• Achieved the first experimental demonstration of a synthetic gauge field in an optomechanical system.
• Demonstrated controllable nonreciprocal conversion and synthetic magnetic fluxes.
• Showcased system dynamics under a fast-varying synthetic gauge field, including a synthetic electric field.

Conclusions:

• This work provides a versatile platform for studying synthetic gauge fields in high dimensions.
• Enables exploration of ultrafast gauge field tuning beyond the dynamic range limitations of magnetic fields.
• Opens new avenues for quantum simulations and topological phenomena research.