Dynamical Coulomb Blockade of Shot Noise

Carles Altimiras; Olivier Parlavecchio; Philippe Joyez; Denis Vion; Patrice Roche; Daniel Esteve; Fabien Portier

Dynamical Coulomb Blockade of Shot Noise

Carles Altimiras ¹ Olivier Parlavecchio ¹ Philippe Joyez ² Denis Vion ² Patrice Roche ¹ Daniel Esteve ² Fabien Portier ¹

1 GNE - Groupe Nano-Electronique

SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay

2 QUANTRONICS - Quantronics Group

SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay

Abstract : We observe the suppression of the finite frequency shot-noise produced by a voltage biased tunnel junction due to its interaction with a single electromagnetic mode of high impedance. The tunnel junction is embedded in a quarter wavelength resonator containing a dense SQUID array providing it with a characteristic impedance in the kOhms range and a resonant frequency tunable in the 4-6 GHz range. Such high impedance gives rise to a sizeable Coulomb blockade on the tunnel junction (roughly 30% reduction in the differential conductance) and allows an efficient measurement of the spectral density of the current fluctuations at the resonator frequency. The observed blockade of shot-noise is found in agreement with an extension of the dynamical Coulomb blockade theory.

Document type :

Journal articles

Domain :

Physics [physics]

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https://hal-cea.archives-ouvertes.fr/cea-01384659
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Submitted on : Thursday, October 20, 2016 - 12:20:49 PM
Last modification on : Thursday, February 7, 2019 - 3:21:11 PM

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