Optical manipulation of single flux quanta

Area of Science:

• Condensed matter physics
• Superconductivity research
• Applied physics

Background:

• Type II superconductors allow magnetic fields to enter as Abrikosov vortices.
• Vortices are confined by pinning sites, making individual manipulation difficult.
• Current methods for vortex control are complex and limited.

Purpose of the Study:

• To introduce a new far-field optical method for manipulating individual Abrikosov vortices.
• To demonstrate a fast and precise technique for vortex control.
• To enable the sculpting of magnetic flux profiles in superconducting devices.

Main Methods:

• Utilizing a focused laser beam to locally heat the superconductor.
• Employing laser-induced heating for non-contact manipulation of vortices.
• Developing an optical tweezer-like approach for vortex handling.

Main Results:

• Demonstrated fast and precise manipulation of individual Abrikosov vortices.
• Showcased a far-field optical method for vortex control.
• Established a technique for sculpting magnetic flux profiles.

Conclusions:

• The optical method offers a simple and effective way to control individual vortices.
• This approach can be used to create novel superconducting devices like vortex lenses and cleaners.
• Eliminates the need for static pinning or ratchet effects in vortex manipulation.