Nakamura, Y. and Yamamoto, T. and Tsai, Jaw-Shen and Pashkin, Yuri (2002) Quantum-state manipulation in a Cooper-pair box. In: Foundations of Quantum Mechanics in the Light of New Technology :. World Scientific Publishing, pp. 12-17. ISBN 9789812381309
Full text not available from this repository.Abstract
Quantum coherent properties of an artificial two-level system in a Josephson-junction circuit were studied experimentally. Responses of the quantum state to a sequence of gate-voltage pulses were measured in time-ensemble measurements, and free-induction decay and "charge echo" signals were obtained. It was found that the decoherence of the two-level system is dominated by the dephasing due to low-frequency charge fluctuations.