A non-local thermometer based on Coulomb coupled systems

We propose a design for non-local cryogenic electrical thermometer based on Coulomb-coupled systems. The proposed thermometer relies on electrostatic interaction between capacitively coupled quantum dots, resulting in a overall change in conductance due to change in the remote reservoir temperature. Analyzing the performance and regime of operation, we conclude that the the proposed design ensures a superior temperature sensitivity and robustness compared to a simple thermometer consisting of two Coulomb coupled quantum dots. At the end we investigate the regime of operation and comment on the ground state configuration for optimal operation of the proposed thermometer. The design proposed in this paper can be employed to construct highly efficient non-local cryogenic thermometers.