Cavity Optomechanical Sensing and Manipulation of an Atomic Persistent Current

Area of Science:

• Quantum physics
• Atomic physics
• Optomechanics

Background:

• Bose-Einstein condensates (BECs) are quantum states of matter exhibiting superfluidity.
• Observing and manipulating BECs, especially rotating ones, is challenging due to destructive measurement techniques.
• Cavity optomechanics offers potential for non-destructive quantum state interrogation.

Purpose of the Study:

• To develop a novel, non-destructive method for sensing and manipulating rotating atomic superflow.
• To explore the interface between atomic superfluid rotation and cavity optomechanics.
• To demonstrate real-time, in-situ measurement of ring Bose-Einstein condensate rotation.

Main Methods:

• Theoretical modeling of an annular Bose-Einstein condensate within an optical cavity.
• Utilizing optical fields with orbital angular momentum to excite the condensate.
• Investigating optomechanical entanglement between light and matter waves.

Main Results:

• The proposed platform allows for minimal-destruction, in-situ, real-time sensing of BEC rotation.
• Demonstrated that light can actively manipulate rotating matter waves.
• Achieved optomechanical entanglement of persistent currents in the condensate.

Conclusions:

• This work establishes a new paradigm for sensing and manipulating atomic superflow.
• Opens avenues for novel quantum technologies leveraging light-matter interactions.
• Provides a foundation for future experimental investigations in quantum rotational dynamics.