Oscillating bound states for a giant atom
Artikel i vetenskaplig tidskrift, 2020

We investigate the relaxation dynamics of a single artificial atom interacting, via multiple coupling points, with a continuum of bosonic modes (photons or phonons) in a one-dimensional waveguide. In the nonMarkovian regime, where the traveling time of a photon or phonon between the coupling points is sufficiently large compared to the inverse of the bare relaxation rate of the atom, we find that a boson can be trapped and form a stable bound state. As a key discovery, we further find that a persistently oscillating bound state can appear inside the continuous spectrum of the waveguide if the number of coupling points is more than two since such a setup enables multiple bound modes to coexist. This opens up prospects for storing and manipulating quantum information in larger Hilbert spaces than available in previously known bound states.

Författare

Lingzhen Guo

Max-Planck-Gesellschaft

Anton Frisk Kockum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Florian Marquardt

Max-Planck-Gesellschaft

Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)

Göran Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

PHYSICAL REVIEW RESEARCH

2643-1564 (eISSN)

Vol. 2 4 043014

Stora atomer - en ny regim för kvantoptik

Vetenskapsrådet (VR), 2020-01-01 -- 2023-12-31.

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Den kondenserade materiens fysik

DOI

10.1103/PhysRevResearch.2.043014

Mer information

Senast uppdaterat

2021-01-21