Phase-modulated Autler-Townes splitting in a giant-atom system within
waveguide QED
- URL: http://arxiv.org/abs/2102.03697v3
- Date: Tue, 7 Dec 2021 08:20:46 GMT
- Title: Phase-modulated Autler-Townes splitting in a giant-atom system within
waveguide QED
- Authors: Wei Zhao, Yan Zhang and Zhihai Wang
- Abstract summary: We investigate the single-photon scattering in a one-dimensional waveguide on a two-level or three-level giant atom.
Thanks to the natural interference induced by the back and forth photon transmitted/reflected between the atom-waveguide coupling points, the photon transmission can be dynamically controlled.
- Score: 7.2508156429681305
- License: http://creativecommons.org/publicdomain/zero/1.0/
- Abstract: The nonlocal emitter-waveguide coupling, which gives birth to the so called
giant atom, represents a new paradigm in the field of quantum optics and
waveguide QED. In this paper, we investigate the single-photon scattering in a
one-dimensional waveguide on a two-level or three-level giant atom. Thanks to
the natural interference induced by the back and forth photon
transmitted/reflected between the atom-waveguide coupling points, the photon
transmission can be dynamically controlled by the periodic phase modulation via
adjusting the size of the giant atom. For the two-level giant-atom setup, we
demonstrate the energy shift which is dependent on the atomic size. For the
driven three-level giant-atom setup, it is of great interest that, the
Autler-Townes splitting is dramatically modulated by the giant atom, in which
the width of the transmission valleys (reflection range) is tunable in terms of
the atomic size. Our investigation will be beneficial to the photon or phonon
control in quantum network based on mesoscopical or even macroscopical quantum
nodes involving the giant atom.
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