Drude weight, cyclotron resonance, and the Dicke model of graphene cavity QED

Marco Polini; Luca Chirolli; Vittorio Giovannetti; Allan MacDonald

Drude weight, cyclotron resonance, and the Dicke model of graphene cavity QED

ORAL

Abstract

The unique optoelectronic properties of graphene make this two-dimensional (2D) material an ideal platform for fundamental studies of cavity quantum electrodynamics (QED) in the strong-coupling regime. The celebrated Dicke model of cavity QED can be approximately realized in this material when the cyclotron transition of its 2D massless Dirac fermion carriers is nearly resonant with a cavity photon mode. In this talk I will discuss the theory of strong matter-photon coupling in this circumstance, emphasizing the essential role of a dynamically generated matter energy term that is quadratic in the photon field and absent in graphene's low-energy Dirac model.

^*Work supported by MIUR-FIRB grants RBID08B3FM and RBFR10M5BT, Welch Foundation grant TBF1473, and by DOE Division of Materials Sciences and Engineering grant DE-FG03-02ER45958

March 18, 2013, 8:24 AM – March 18, 2013, 8:36 AM

Authors

Marco Polini
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, I-56126 Pisa, Italy
- NEST-CNR-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore
Luca Chirolli
- NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR
Vittorio Giovannetti
- NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR
Allan MacDonald
- Department of Physics, University of Texas at Austin, Austin, Texas 78712, USA