Encircling exceptional points as a non-Hermitian extension of rapid
adiabatic passage
- URL: http://arxiv.org/abs/2004.05486v1
- Date: Sat, 11 Apr 2020 20:53:18 GMT
- Title: Encircling exceptional points as a non-Hermitian extension of rapid
adiabatic passage
- Authors: Juraj Feilhauer, Alexander Schumer, J\"org Doppler, Alexei A.
Mailybaev, Julian B\"ohm, Ulrich Kuhl, Nimrod Moiseyev, Stefan Rotter
- Abstract summary: We show that a suitable amount of loss to the driven Hamiltonian turns a RAP protocol into a scheme for encircling an exceptional point.
Our work thus discloses an intimate connection between a whole body of literature on RAP and recent studies on the dynamics in the vicinity of an exceptional point.
- Score: 50.591267188664666
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The efficient transfer of excitations between different levels of a quantum
system is a task with many applications. Among the various protocols to carry
out such a state transfer in driven systems, rapid adiabatic passage (RAP) is
one of the most widely used. Here we show both theoretically and experimentally
that adding a suitable amount of loss to the driven Hamiltonian turns a RAP
protocol into a scheme for encircling an exceptional point including the chiral
state transfer associated with it. Our work thus discloses an intimate
connection between a whole body of literature on RAP and recent studies on the
dynamics in the vicinity of an exceptional point, which we expect to serve as a
bridge between the disjoint communities working on these two scenarios.
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