Guo L, Kockum AF, Marquardt F, Johansson G (2020)
Publication Type: Journal article
Publication year: 2020
Book Volume: 2
Journal Issue: 4
DOI: 10.1103/PhysRevResearch.2.043014
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.
APA:
Guo, L., Kockum, A.F., Marquardt, F., & Johansson, G. (2020). Oscillating bound states for a giant atom. Physical Review Research, 2(4). https://doi.org/10.1103/PhysRevResearch.2.043014
MLA:
Guo, Lingzhen, et al. "Oscillating bound states for a giant atom." Physical Review Research 2.4 (2020).
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