Experimental Test of the High-Frequency Quantum Shot Noise Theory in a Quantum Point Contact

Details Experimental Test of the High-Frequency Quantum Shot Noise Theory in a Quantum Point Contact Experimental Test of the High-Frequency Quantum Shot Noise Theory in a Quantum Point Contact

2007-04-06

arxiv.org/abs/0704.0907v4

Physical Review Letters 99 (2007) 236803

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Version Published in Phys. Rev. Lett. (Phys. Rev. Lett. 99, 236803 (2007))

Scientific paper

10.1103/PhysRevLett.99.236803

We report on direct measurements of the electronic shot noise of a quantum point contact at frequencies nu in the range 4-8 GHz. The very small energy scale used ensures energy independent transmissions of the few transmitted electronic modes and their accurate knowledge. Both the thermal energy and the quantum point contact drain-source voltage Vds are comparable to the photon energy hnu leading to observation of the shot noise suppression when $V_{ds}

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