Landau-Zener-Stückelberg interferometry

Sergey N. Shevchenko, S. Ashhab, Franco Nori

Research output: Contribution to journalReview article

403 Citations (Scopus)

Abstract

A transition between energy levels at an avoided crossing is known as a Landau-Zener transition. When a two-level system (TLS) is subject to periodic driving with sufficiently large amplitude, a sequence of transitions occurs. The phase accumulated between transitions (commonly known as the Stückelberg phase) may result in constructive or destructive interference. Accordingly, the physical observables of the system exhibit periodic dependence on the various system parameters. This phenomenon is often referred to as Landau-Zener-Stückelberg (LZS) interferometry. Phenomena related to LZS interferometry occur in a variety of physical systems. In particular, recent experiments on LZS interferometry in superconducting TLSs (qubits) have demonstrated the potential for using this kind of interferometry as an effective tool for obtaining the parameters characterizing the TLS as well as its interaction with the control fields and with the environment. Furthermore, strong driving could allow for fast and reliable control of the quantum system. Here we review recent experimental results on LZS interferometry, and we present related theory.

Original languageEnglish
Pages (from-to)1-30
Number of pages30
JournalPhysics Reports
Volume492
Issue number1
DOIs
Publication statusPublished - 1 Jul 2010

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Keywords

  • Interferometry
  • Landau-Zener transition
  • Multiphoton excitations
  • Spectroscopy
  • Stückelberg oscillations
  • Superconducting qubits

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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