Ithier, Grégoire, Collin, E , Joyez, P , Meeson, P J , Vion, D , Esteve, D , Chiarello, F , Shnirman, A , Makhlin, Y , Schriefl, J and Schon, G (2005) Decoherence in a superconducting quantum bit circuit. Physical Review B, 72 (13).
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Decoherence in quantum bit circuits is presently a major limitation to their use for quantum computing purposes. We present experiments, inspired from NMR, that characterize decoherence in a particular superconducting quantum bit circuit, the quantronium. We introduce a general framework for the analysis of decoherence, based on the spectral densities of the noise sources coupled to the qubit. Analysis of our measurements within this framework indicates a simple model for the noise sources acting on the qubit. We discuss various methods to fight decoherence.
This is a Submitted version This version's date is: 10/2005 This item is not peer reviewed
https://repository.royalholloway.ac.uk/items/280df435-a08b-41ac-1eed-e0c086bbf982/5/
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