Optical Coupling of Levitated Nanospheres to Cold Atoms
April 11th, 2019 CRIS MONTOYA Northwestern University

Ground state cooling of the center of mass motion of a levitated particle is of great interest for tests of fundamental quantum physics due to the particle’s long decoherence time. Cooled levitated particles can also be used for matter-wave interferometry, and for precision sensing. It has been shown theoretically that cooling of a levitated nanosphere to the ground state can be done sympathetically via cold atoms. In such a system, a sample of atoms, cooled with well-known techniques such as molasses cooling, is used to sympathetically reduce the center-of-mass motion of a nanosphere. The sphere is levitated in a separate chamber, and it couples to the atoms through radiation pressure forces.

Seminar, April 11, 2019, 15:00. ICFO’s Seminar Room

Hosted by Prof. Romain Quidant