진학프로석·박사 채용 접수 플랫폼

Abrikosov vortices are the most compact magnetic objects, with a size of a few tens to a few hundred nanometers. These flux tubes, which penetrate type II superconductors (such as Niobium), carry a quantum of flux h/2e and are surrounded by super-currents. Recently, our group demonstrated the ability to manipulate single flux quanta with a laser beam, as simply as with optical tweezers.

The main goal of the postdoctoral project is to explore the magnetic interaction between an optically manipulated individual Abrikosov vortex and a single spin present in a quantum nano-emitter such as the nitrogen-vacancy color center in diamond. The entanglement between the vortex mesoscopic system and the spin will be studied. The 3D optical nanoscopy methods developed in our group will be applied to precisely map the distribution of magnetic field (or electric field) around a vortex. Finally, we will investigate the ability to manipulate the spin state with the magnetic field carried by the vortex.

Selected references of the group in link with this research field :

1- Optical Manipulation of Single Flux Quanta, Nature communications 7 (2016) 12801.

2- Optical Nanoscopy with Excited State Saturation at Liquid Helium Temperatures, Nature Photonics, 9 (2015) 658-662.

3- Anomalous Josephson effect controlled by an Abrikosov vortex », PRB 96, 214515 (2017).

4- On-Demand Optical Generation of Single Flux Quanta, A. Rochet et al. Nano Letters 20 (2020) 6488.

5- “High-resolution optical imaging of single magnetic flux quanta with a solid immersion lens”, Siddharatha Thakur et al. Optics Express 31 (2023) 24194.