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[Fizinfo] Szirmai Gergely eloadasa a BME-n, feb 4, 14:15

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  • From: Andras Palyi <palyi AT>
  • Subject: [Fizinfo] Szirmai Gergely eloadasa a BME-n, feb 4, 14:15
  • Date: Fri, 1 Feb 2019 13:48:18 +0100

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,
Idopont: 2019. februar 4., hetfo, 14:15

"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."

Palyi Andras

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