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Kinetic Uncertainty Relations for Quantum Transport
Didrik Palmqvist1, Ludovico Tesser1, Janine Splettstoesser1
1Chalmers University of Technology, Department of Microtechnology and Nanoscience (MC2), S-412 96 Göteborg, Sweden.
Abstract:
We analyze the precision of generic currents in a multiterminal quantum-transport setting. Employing scattering theory, we show that the precision of such currents is limited by a function of the particle-current noise that can be interpreted as the activity in the classical limit. We thereby establish a kinetic uncertainty relation for quantum transport. In the full quantum limit, we find precision bounds with modified activity constraints depending on whether the system is fermionic or bosonic. We expect these bounds to be suitable as guidelines for any transport process aiming at high precision.
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