Multiphoton transitions in Josephson-junction qubits (Review Article)

Автор(и)

  • S.N. Shevchenko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • A.N. Omelyanchouk B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • E. Il`ichev Institute of Photonic Technology, PO Box 100239, D-7702 Jena, Germany

DOI:

https://doi.org/10.1063/1.3701717

Ключові слова:

superconducting qubit, multiphoton excitation, multilevel system, spectroscopy, interferometry.

Анотація

Two basic physical models, a two-level system and a harmonic oscillator, are realized on the mesoscopic scale as coupled qubit and resonator. The realistic system includes moreover the electronics for controlling the distance between the qubit energy levels and their populations and to read out the resonator's state, as well as the unavoidable dissipative environment. Such rich system is interesting both for the study of fundamental quantum phenomena on the mesoscopic scale and as a promising system for future electronic devices. We present recent results for the driven superconducting qubit–resonator system, where the resonator can be realized as an LC circuit or a nanomechanical resonator. Most of the results can be described by the semiclassical theory, where a qubit is treated as a quantum two-level system coupled to the classical driving field and the classical resonator. Application of this theory allows to describe many phenomena for the single and two coupled superconducting qubits, among which are the following: the equilibrium-state and weak-driving spectroscopy, Sisyphus damping and amplification, Landau–Zener–Stückelberg interferometry, the multiphoton transitions of both direct and ladder- type character, and creation of the inverse population for lasing.

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Опубліковано

2012-03-15

Як цитувати

(1)
Shevchenko, S.; Omelyanchouk, A.; Il`ichev, E. Multiphoton Transitions in Josephson-Junction Qubits (Review Article). Fiz. Nizk. Temp. 2012, 38, 360-381.

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