An optical tweezer array of ultracold polyatomic molecules.

Area of Science:

• Quantum Information Science
• Ultracold Chemistry
• Quantum Simulation
• Fundamental Physics

Background:

• Polyatomic molecules offer unique structural features for advanced scientific applications.
• Controlling both internal quantum states and motional degrees of freedom of molecules remains a significant challenge.

Purpose of the Study:

• To demonstrate the creation of an optical tweezer array of individual polyatomic molecules (CaOH).
• To achieve quantum control over the internal quantum state of these molecules within the array.
• To enable precise manipulation and imaging of molecules for quantum applications.

Main Methods:

• Utilized an optical tweezer array to trap individual CaOH molecules.
• Manipulated the wavelength-dependent interaction between molecules and tweezer light.
• Developed methods for non-destructive imaging of molecules with high fidelity (>90%).
• Demonstrated coherent state control at the single internal quantum state level.

Main Results:

• Successfully created an optical tweezer array of individual CaOH molecules.
• Achieved quantum control over the internal quantum state of the trapped molecules.
• Demonstrated high-fidelity, non-destructive imaging of individual molecules.
• Showcased coherent state manipulation within the tweezer array.

Conclusions:

• The developed platform enables precise control over individual polyatomic molecules.
• This advancement is crucial for future experiments in quantum information science, quantum simulation, and ultracold chemistry.
• The ability to arrange molecules spatially opens new avenues for quantum research.