Decoherence in a superconducting quantum bit circuit
Top Cited Papers
- 24 October 2005
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 72 (13)
- https://doi.org/10.1103/physrevb.72.134519
Abstract
Decoherence in quantum bit circuits is presently a major limitation to their use for quantum computing purposes. We present experiments, inspired from NMR, that characterise 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.Keywords
All Related Versions
This publication has 41 references indexed in Scilit:
- Coherent Oscillations in a Superconducting Multilevel Quantum SystemPhysical Review Letters, 2004
- Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamicsNature, 2004
- Coherent Quantum Dynamics of a Superconducting Flux QubitScience, 2003
- Rabi Oscillations in a Large Josephson-Junction QubitPhysical Review Letters, 2002
- Manipulating the Quantum State of an Electrical CircuitScience, 2002
- Implementation of a combined charge-phase quantum bit in a superconducting circuitPhysica C: Superconductivity and its Applications, 2002
- Charge Echo in a Cooper-Pair BoxPhysical Review Letters, 2002
- Coherent control of macroscopic quantum states in a single-Cooper-pair boxNature, 1999
- Quantum Coherence with a Single Cooper PairPhysica Scripta, 1998
- Spectroscopy of Energy-Level Splitting between Two Macroscopic Quantum States of Charge Coherently Superposed by Josephson CouplingPhysical Review Letters, 1997