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TT: Fachverband Tiefe Temperaturen

TT 51: Nonequilibrium Quantum Many-Body Systems I (joint session TT/DY)

TT 51.9: Vortrag

Mittwoch, 14. März 2018, 12:00–12:15, H 3010

Frustration-induced quasi-long-range order in a photonic system — •Matteo Biondi, Gianni Blatter, and Sebastian Schmidt — Institut für Theoretische Physik, Wolfgang-Pauli-Str. 27 8093 Zürich Switzerland

We investigate the interplay of geometric frustration and interactions in a nonequilibrium photonic lattice system exhibiting a photonic flat band as described by the driven-dissipative Bose-Hubbard model. We propose how to engineer quasi-long-range order in a quasi one-dimensional frustrated system by pumping the photonic lattice incoherently. Using a filter qubit to modulate the bandwidth of the pump, we demonstrate how to obtain a quasi-pure density-wave state of photons characterized by a polynomial decay of density-density correlations. We provide analytic results together with finite-size simulations of the Lindblad master equation using exact diagonalization and propose a state-of-the-art photonic realization of our system within cavity QED.
M. Biondi, G. Blatter and S. Schmidt, in preparation.
M. Biondi, E. v. Nieuwenburg, G. Blatter, S. Huber, and S. Schmidt, PRL 115, 143601 (2015).
F. Baboux, L. Ge, T. Jacqmin, M. Biondi, E. Galopin, A. Lemaitre, L. Le Gratiet, I. Sagnes, S. Schmidt, H. E. Türeci, A. Amo and J. Bloch, PRL 116, 066402 (2016).