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Hand Controlled Manipulation of Single Molecules via a Scanning Probe Microscope with a 3D Virtual Reality Interface

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Three-dimensional optical manipulation of a single electron spin.

Michael Geiselmann¹, Mathieu L Juan, Jan Renger

¹ICFO - Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain.

Nature Nanotechnology

|February 12, 2013

Summary

Researchers used optical tweezers to precisely control individual nitrogen vacancy (NV) centers in diamond nanodiamonds. This breakthrough enables 3D vectorial magnetometry and sensing of optical states.

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Area of Science:

Quantum optics
Quantum information processing
Nanotechnology

Background:

Nitrogen vacancy (NV) centers in diamond are crucial for quantum technologies.
Precise manipulation of NV centers is essential for their application.
Current methods lack precise 3D control and angular manipulation.

Purpose of the Study:

To develop a method for deterministic trapping and 3D spatial manipulation of single NV centers in nanodiamonds.
To demonstrate in situ control of the NV axis orientation.
To showcase NV centers as a novel platform for 3D vectorial magnetometry and optical density of states sensing.

Main Methods:

Utilized optical tweezers for trapping individual nanodiamonds containing single NV spins.
Investigated NV axis orientation within the optical trap.
Employed polarization control of trapping light to orient the NV axis.
Combined spatial/angular control with coherent spin manipulation and fluorescence lifetime measurements.
Integrated with a photonic system for enhanced sensing capabilities.

Main Results:

Achieved deterministic trapping and 3D spatial manipulation of individual nanodiamonds with single NV spins.
Found the NV axis to be nearly fixed in the trap and controllable via light polarization.
Demonstrated 3D vectorial magnetometry using optically trapped NV centers.
Showcased sensing of the local density of optical states.

Conclusions:

Optical tweezers provide a powerful tool for precise control of individual NV centers.
In situ control of NV axis orientation is achievable through polarization manipulation.
Optically trapped NV centers offer a novel and versatile platform for advanced quantum sensing applications.