Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Anomalous Behaviors of Quantum Emitters in Non-Hermitian Baths


Kunst,  Flore K.
Kunst Research Group, Marquardt Division, Max Planck Institute for the Science of Light, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

(Any fulltext), 547KB

Supplementary Material (public)

(Supplementary material), 21KB


Gong, Z., Bello, M., Malz, D., & Kunst, F. K. (2022). Anomalous Behaviors of Quantum Emitters in Non-Hermitian Baths. Physical Review Letters, 129: 223601. doi:10.1103/PhysRevLett.129.223601.

Cite as: https://hdl.handle.net/21.11116/0000-000A-9DBF-F
Both non-Hermitian systems and the behaviour of emitters coupled to structured baths have been studied intensely in recent years. Here we study the interplay of these paradigmatic settings. In a series of examples, we show that a single quantum emitter coupled to a non-Hermitian bath displays a number of unconventional behaviours, many without Hermitian counterpart. We first consider a unidirectional hopping lattice whose complex dispersion forms a loop. We identify peculiar bound states inside the loop as a manifestation of the non-Hermitian skin effect. In the same setting, emitted photons may display spatial amplification markedly distinct from free propagation, which can be understood with the help of the generalized Brillouin zone. We then consider a nearest-neighbor lattice with alternating loss. We find that the long-time emitter decay always follows a power law, which is usually invisible for Hermitian baths. Our work points toward a rich landscape of anomalous quantum emitter dynamics induced by non-Hermitian baths.