Nanofiber-segment ring resonator

Area of Science:

• Atomic, Molecular, and Optical Physics
• Quantum Optics
• Nanophotonics

Background:

• Fiber ring resonators are crucial for enhancing light-matter interactions.
• Nanofiber segments offer unique evanescent field confinement for precise atom interaction.
• Cavity Quantum Electrodynamics (QED) explores fundamental light-atom interactions.

Purpose of the Study:

• To demonstrate a novel fiber ring resonator incorporating a nanofiber segment.
• To investigate the interaction between cavity-enhanced fields and atoms near the nanofiber.
• To explore the potential for achieving strong coupling in cavity QED systems.

Main Methods:

• Constructed a fiber ring resonator with a standard single-mode fiber loop and a short nanofiber segment.
• Utilized the evanescent mode of the nanofiber for atom proximity.
• Performed experiments with warm atomic vapor and a low-finesse cavity.

Main Results:

• Successfully integrated a nanofiber segment into a fiber ring resonator.
• Demonstrated cavity-enhanced field interaction with nearby atoms.
• Observed the feasibility of the system for atomic vapor studies.

Conclusions:

• The described fiber ring resonator with a nanofiber segment is a promising platform for light-atom interaction studies.
• The system has potential for future development towards the strong coupling regime of cavity QED.
• Further research with trapped atoms and high-finesse cavities could unlock advanced quantum phenomena.