Temperature dependence of the visibility in an electronic Mach-Zehnder interferometer
Masayuki Hashisaka, Andreas Helzel, Shuji Nakamura, Leonid Litvin,, Yoshiaki Yamauchi, Kensuke Kobayashi, Teruo Ono, Hans-Peter Tranitz, Werner, Wegscheider, and Christoph Strunk
TL;DR
This study investigates how electron temperature affects the visibility of interference patterns in an electronic Mach-Zehnder interferometer through conductance and shot noise measurements, revealing oscillations related to quantum effects.
Contribution
It provides new insights into the temperature dependence of quantum interference visibility in electronic interferometers using noise measurements.
Findings
Visibility varies with electron temperature.
Oscillations at h/e and h/2e are observed.
Non-equilibrium noise influences interference patterns.
Abstract
We performed the conductance and the shot noise measurements in an electronic Mach-Zehnder interferometer. The visibility of the interference is investigated as a function of the electron temperature that is derived from the thermal noise of the interferometer. The non-equilibrium noise displays both h/e and h/2e oscillations vs. the modulation gate voltage.
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