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Search for Exotic Spin-Dependent Interactions with Dressed Atoms.

Xiyu Liu1, Wei Xiao1,2, Meng Liu1

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Summary

We developed a new method to engineer the Landé g factor in alkali-metal atoms using spin-exchange collisions and radio-frequency magnetic-field dressing. This technique enhances the study of spin-dependent interactions and improves gyroscope sensitivity.

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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.