QSense OIST Mini-Symposium Talk 3: Spin-mechanics with trapped diamonds

Speaker: Prof Gabriel Hetet, Laboratoire de Physique de l’Ecole normale superieure, ENS, Universite PSL, CNRS, Sorbonne Universite, Universite Paris-Diderot, Sorbonne Paris Cite

Spin-mechanics with trapped diamonds ​ 
(QSense OIST Mini Symposium Talk 3)​

Observing and controlling macroscopic quantum systems has long been a driving force in research on quantum physics. The angular degrees of freedom of levitating diamonds coupled to embedded Nitrogen-Vacancy (NV) centers offer bright prospects towards this purpose. Indeed, using nanodiamonds trapped under low vacuum levels, the inherent quantum nature of the NV spin can in principle be transferred on to its mechanical motion. I will present our demonstrations of coherent manipulations of the spin of NV centers [1] and of the spin-dependent torque and spin-cooling of the angular motion of diamonds levitating in a Paul trap [2]. I will also discuss our more recent progress towards the detection of dipolar interactions between NVs and of the full magneto-optical alignment of the diamond axes along the magnetic field using this spin-mechanical platform.

[1] Delord, et al. Physical review letters 121 (5), 053602 (2018)
[2] Delord, et al. Nature 580 (7801), 56-59 (2020)

OIST Mini-Symposium for Quantum Sensors of Magnetic and Inertial Forces

This mini-symposium is hosted by the Quantum Machines Unit in the Okinawa Institute of Science and Technology Graduate University, and will take place from Feb 1, 2021 - March 5, 2021. To get the precise schedule and zoom invitation please register below. Attendance is open to any student/faculty member from any of the institutions associated with the speakers.

Summary

Quantum systems are extremely fragile, sensitive to noise and fluctuations by their environments. This, in turn, makes them excellent sensors for a variety of forces and fields. In this mini-symposium we focus on the development of novel quantum sensors which are aimed at the precision sensing of inertial forces such as acceleration or gravity, and magnetic forces.

Such sensors - accelerometers/gravimeters or magnetometers, have a widespread application in industry such as sensing underground water movements using gravimeters, through to magnetic brain imaging using magnetoencephelography. Each week we hear from three international experts on these topics in hour-long seminars and discussions.

For more information, visit the QSense website.