ELFT HÍRADÓ

[Andras Palyi <palyi AT mail.bme.hu>]

Kedves Kollegak, 

Az MTA-BME Egzotikus Kvantumfazisok kutatocsoport szeminariumsorozatanak 
kovetkezo eloadasa:

Szirmai Gergely (Wigner FK)
“Quantum noise in a transversely-pumped-cavity Bose-Hubbard model”

Hely: BME Elmeleti Fizika Tanszek konyvtara, F epulet, III. lepcsohaz, 
magasfoldszint
Idopont: 2019. februar 4., hetfo, 14:15

Kivonat: 
"A weakly interacting gas of bosonic atoms moving in the periodic
potential of an optical lattice goes through a phase transition at a
sufficiently low temperature. This phase transition is characterized
by the macroscopic occupation of the single particle ground state and
called as Bose-Einstein condensation. This Bose-Einstein condensate
is, however, sensitive to particle interactions. When the interaction
between particles becomes strong, the Bose-Einstein condensate can
freeze into a Mott insulator.

When the Bose gas is placed inside an optical resonator, atom-light
interaction may create an infinite range interaction between the atoms
and may cause, in certain geometries, another interesting phase
transition: the formation of a charge-density wave. The charge-density
wave combined with Bose-Einstein condensation is called as supersolid.

During the talk, we discuss the Bose gas inside an optical resonator,
paying special attention to another very important feature: the
driven-dissipative nature of the cavity. The photons eventually escape
the cavity resulting in a quantum noise for the atomic dynamics."

Udvozlettel,
Palyi Andras