Two electrons are better than one... In the Yb lab we produce Bose-Einstein condensates and degenerate Fermi gases of ytterbium atoms. These atoms offer metastable electronic states, ultranarrow clock transitions, multicomponent fermions with SU(N) interactions: a whole range of experimental tools that allow new possibilities for quantum simulation and quantum information processing.

A new spin-exchange observed

We report on the first direct observation of fast spin-exchange coherent oscillations between di fferent long-lived electronic orbitals of ultracold 173Yb fermions. We measure, in a model-independent way, the strength of the exchange interaction driving this coherent process. This observation allows us to retrieve important information on the inter-orbital collisional properties of 173Yb atoms and paves the way to novel quantum simulations of paradigmatic models of two-orbital quantum magnetism.

G. Cappellini et al.,
Direct Observation of Coherent Interorbital Spin-Exchange Dynamics
Phys. Rev. Lett. 113, 120402 (2014)

See also the Physics Viewpoint by A. M. Rey:

A. M. Rey
Observing the Great Spin and Orbital Swap
Physics 7, 95 (2014)

Yb people

Lorenzo Franchi
PhD student
Lorenzo Livi
PhD student
Giacomo Cappellini
Postdoc
Jacopo Catani
Scientific staff
Massimo Inguscio
Scientific staff
Leonardo Fallani
Scientific staff
Former members:
Giovanni Giusfredi
Jonathan T. Green
Pietro Lombardi
Marco Mancini
Pablo Cancio Pastor
Guido Pagano
Florian Schäfer
Carlo Sias

Yb contacts

For further information, request of material, job opportunities, please contact:

Leonardo Fallani
(fallani@lens.unifi.it)

Yb funding

ERC CoG TOPSIM
PRIN2012 AQUASIM
EU FP7 SIQS
INFN FISh