Search for Exotic Spin-Dependent Interactions with Dressed Atoms

Area of Science:

• Atomic physics
• Quantum optics
• Quantum sensing

Background:

• The Landé g factor is crucial for understanding atomic behavior in magnetic fields.
• Conventional comagnetometry faces challenges in isolating specific spin-dependent interactions.
• Alkali-metal atoms are sensitive probes for fundamental physics.

Purpose of the Study:

• To present a novel method for engineering the Landé g factor in alkali-metal atoms.
• To enable the distinction between magnetic and nonmagnetic spin-dependent interactions.
• To offer a complementary technique for comagnetometry and gyroscope applications.

Main Methods:

• Utilizing spin-exchange collisions to manipulate atomic spins.
• Employing nonresonant radio-frequency (rf) magnetic-field dressing.
• Analyzing schemes with both linearly and circularly polarized rf fields to generate dressed states.

Main Results:

• Demonstrated a method to engineer the Landé g factor.
• Generated dressed states that allow for distinguishing spin-dependent interactions.
• Showcased the potential to isolate the spin-gravity interaction.

Conclusions:

• The proposed method offers a new pathway for fundamental physics investigations.
• This technique complements existing comagnetometry approaches.
• The engineered Landé g factor can enhance the sensitivity of atomic gyroscopes.