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Title: Resonance at the Rabi frequency in a superconducting flux qubit

We analyze a system composed of a superconducting flux qubit coupled to a transmission-line resonator driven by two signals with frequencies close to the resonator's harmonics. The first strong signal is used for exciting the system to a high energetic state while a second weak signal is applied for probing effective eigenstates of the system. In the framework of doubly dressed states we showed the possibility of amplification and attenuation of the probe signal by direct transitions at the Rabi frequency. We present a brief review of theoretical and experimental works where a direct resonance at Rabi frequency have been investigated in superconducting flux qubits. The interaction of the qubit with photons of two harmonics has prospects to be used as a quantum amplifier (microwave laser) or an attenuator.
Authors:
 [1] ; ;  [2] ;  [3]
  1. Novosibirsk State Technical University, Novosibirsk (Russian Federation)
  2. common Leibniz Institute of Photonic Technology, Jena (Germany)
  3. B. Verkin Institute for Low Temperature Physics and Engineering, Kharkov, Ukraine and V. Karazin Kharkov National University, Kharkov (Ukraine)
Publication Date:
OSTI Identifier:
22307996
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1619; Journal Issue: 1; Conference: 4. conference on nuclei and mesoscopic physics 2014, East Lansing, MI (United States), 5-9 May 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLIFICATION; AMPLIFIERS; ATTENUATION; EIGENSTATES; HARMONICS; MICROWAVE RADIATION; PHOTONS; QUANTUM MECHANICS; QUANTUM STATES; QUBITS; RESONANCE; RESONATORS; SIGNALS