Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session W31: Continuously Measured Systems and Driven-dissipative Phenomena
3:00 PM–6:00 PM,
Thursday, March 7, 2024
Room: 102C
Sponsoring
Units:
GSNP DQI DCMP
Chair: Felix Binder, Trinity College Dublin; Joseph Smiga, University of Rochester
Abstract: W31.00008 : Stability via symmetry breaking in interacting driven systems*
4:48 PM–5:00 PM
Presenter:
Andrew Pocklington
(University of Chicago)
Authors:
Andrew Pocklington
(University of Chicago)
Aashish A Clerk
(University of Chicago)
We analyze two concrete examples, showing that this is of practical as well as fundamental relevance. The first is a new kind of PT laser, where Hermitian Hamiltonian interactions can move the dynamics between the PT broken and unbroken phases and thus induce stability. The second uses onsite Kerr or Hubbard type interactions to break the chiral symmetry in a topological photonic lattice. In the limit of weak interactions, this generates a new mechanism for topological lasing. When interactions are strong, we show that our mechanism can also stabilize non-classical quantum many-body states, like a single photon Fock state in a topological edge mode.
[1] A. Pocklington and A.A. Clerk, arXiv:2307.16743
*Supported by the Air Force Office of Scientific Research (Grant No. FA9550-19-1-0362), UChicago MRSEC (NSF Grant No. DMR-1420709), and the Simons Foundation (Investigator Award No. 669487, AC)
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