Schrodinger-Cat States in Landau-Zener-Stuckelberg-Majorana Interferometry: A Multiple Davydov Ansatz Approach

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung


  • Lu Wang - , Inner Mongolia University of Science and Technology (Autor:in)
  • Fulu Zheng - , Max-Planck-Institute for the Physics of Complex Systems (Autor:in)
  • Jiaming Wang - , Nanyang Technological University (Autor:in)
  • Frank Grossmann - , Professur für Quanten-Vielteilchentheorie (Autor:in)
  • Yang Zhao - , Nanyang Technological University (Autor:in)


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.


Seiten (von - bis)3184-3196
FachzeitschriftJournal of Physical Chemistry B
PublikationsstatusVeröffentlicht - 1 Apr. 2021

Externe IDs

Scopus 85103682124