Schrödinger-Cat States in Landau-Zener-Stückelberg-Majorana Interferometry: A Multiple Davydov Ansatz Approach

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Lu Wang - , Inner Mongolia University of Science and Technology (Autor:in)
  • Fulu Zheng - , Max-Planck-Institut für Physik komplexer Systeme (Autor:in)
  • Jiaming Wang - , Nanyang Technological University (Autor:in)
  • Frank Grossmann - , Professur für Quanten-Vielteilchentheorie (Autor:in)
  • Yang Zhao - , Nanyang Technological University (Autor:in)

Abstract

Employing the time-dependent variational principle combined with the multiple Davydov D-2 Ansatz, we investigate Landau-Zener (LZ) transitions in a qubit coupled to a photon mode with various initial photon states at zero temperature. Thanks to the multiple Davydov trial states, exact photonic dynamics taking place in the course of the LZ transition is also studied efficiently. With the qubit driven by a linear external field and the photon mode initialized with Schrodinger-cat states, asymptotic behavior of the transition probability beyond the rotating-wave approximation is uncovered for a variety of initial states. Using a sinusoidal external driving field, we also explore the photon-assisted dynamics of Landau-Zener-Stuckelberg-Majorana interferometry. Transition pathways involving multiple energy levels are unveiled by analyzing the photon dynamics.

Details

OriginalspracheEnglisch
Seiten (von - bis)3184-3196
Seitenumfang13
FachzeitschriftJournal of Physical Chemistry B
Jahrgang125
Ausgabenummer12
PublikationsstatusVeröffentlicht - 1 Apr. 2021
Peer-Review-StatusJa

Externe IDs

Scopus 85103682124
unpaywall 10.1021/acs.jpcb.1c00887
Mendeley ed54fb4f-bdd0-3795-b83a-5124ace46454

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