RSS icon
Twitter icon
Facebook icon
Vimeo icon
YouTube icon

A Supersolid of Matter and Light

May 9, 2017 - 4:00pm
Speaker: 
Tilman Esslinger
Institution: 
ETH Zurich

The concept of a supersolid state is paradoxical. It combines the crystallization of a many-body system with dissipationless flow of the atoms it is built of. This quantum phase requires the breaking of two symmetries, the phase invariance of a superfluid and the translational invariance to form the crystal. We experimentally studied two forms of supersolids: i) a lattice supersolid, breaking a discrete translational symmetry. This bosonic lattice model features competing short- and long-range interactions, and we observed the appearance of four distinct quantum phases—a superfluid, a supersolid, a Mott insulator and a charge density wave. The system is based on an atomic quantum gas trapped in an optical lattice inside a single high-finesse optical cavity [1]. ii) Most recently, we succeeded in realizing a supersolid breaking a continuous translational symmetry. This symmetry emerges from two discrete spatial ones by symmetrically coupling a Bose-Einstein condensate to the modes of two optical cavities [2].

 

References

 

[1]J. Léonard, A. Morales, P. Zupancic, T. Esslinger, T. Donner, Nature 543, 87-90 (2017).

[2]R. Landig,L. Hruby,N. Dogra,M. Landini, R. Mottl, T. Donner, T. Esslinger, Nature 532, 476 (2016).

 

PSC Lobby

Subscribe to A Quantum Bit 

Quantum physics began with revolutionary discoveries in the early twentieth century and continues to be central in today’s physics research. Learn about quantum physics, bit by bit. From definitions to the latest research, this is your portal. Subscribe to receive regular emails from the quantum world. Previous Issues...

Sign Up Now

Sign up to receive A Quantum Bit in your email!

 Have an idea for A Quantum Bit? Submit your suggestions to jqi-comm@umd.edu