Multiphoton transitions between energy levels in a phase-biased Cooper-pair box

Abstract

We investigated both theoretically and experimentally dynamic features of a phase-biased charge qubit consisting of a single-Cooper-pair transistor closed by a superconducting loop. The effective inductance of the qubit was probed by a high-quality tank circuit. In the presence of a microwave power, with a frequency of the order of the qubit energy level separation, an alteration of the qubit inductance was observed. We demonstrate that this effect is caused by the redistribution of the qubit level population. The excitation of the qubit by one-, two-, and three-photon processes was detected. Quantitative agreement between theory and experimental data was found.

7 pages, 5 figures; v.2: references added and discussion improved

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Cited by in corpus (18)

• Microwave photonics with superconducting quantum circuits
• Landau-Zener-Stuckelberg interferometry
• Qubit-oscillator systems in the ultrastrong-coupling regime and their potential for preparing nonclassical states
• Electromagnetically induced transparency and Autler-Townes splitting in superconducting flux quantum circuits
• Inverse Landau-Zener-Stuckelberg problem for qubit-resonator systems
• Multiphoton transitions in Josephson-junction qubits (Review Article)
• Resonant excitations of single and two-qubit systems coupled to a tank circuit
• Amplification and attenuation of a probe signal by doubly-dressed states
• Distinguishing quantum from classical oscillations in a driven phase qubit
• Impedance measurement technique for quantum systems
• Pseudo-Rabi oscillations in superconducting flux qubits in the classical regime
• Quantum superposition of three macroscopic states and superconducting qutrit detector
• Resonant effects in the strongly driven phase-biased Cooper-pair box
• Quantum theory of the low-frequency linear susceptibility of interferometer-type superconducting qubits
• Multiphonon transitions in a quantum electromechanical system
• Coherent Rabi response of a charge-phase qubit under microwave irradiation
• Model of multiphoton transitions in a current-biased Josephson junction
• The two Josephson junction flux qubit with large tunneling amplitude