Identification of Coulomb blockade and macroscopic quantum tunneling by noise
arXiv:cond-mat/0202460 · doi:10.1209/epl/i2002-00657-1
Abstract
The effects of Macroscopic Quantum Tunneling (MQT) and Coulomb Blockade (CB) in Josephson junctions are of considerable significance both for the manifestations of quantum mechanics on the macroscopic scale and potential technological applications. These two complementary effects are shown to be clearly distinguishable from the associated noise spectra. The current noise is determined exactly and a rather sharp crossover between flux noise in the MQT and charge noise in the CB regions is found as the applied voltage is changed. Related results hold for the voltage noise in current-biased junctions.
arXiv comment6 pages, 3 figures, epl.cls included
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Cited by in corpus (8)
- Josephson junctions as threshold detectors for full counting statistics
- Nonclassical photon pair production in a voltage-biased Josephson junction
- Full counting statistics in the self-dual interacting resonant level model
- Correlated Cooper pair transport and microwave photon emission in the dynamical Coulomb blockade
- Shot noise in non-adiabatically driven nanoscale conductors
- Input-output description of microwave radiation in the dynamical Coulomb blockade
- Statistics of voltage fluctuations in resistively shunted Josephson junctions
- Theory of double Cooper-pair tunneling and light emission mediated by a resonator