Related papers: Steady-state dynamics and non-local correlations in thermoelectric Cooper pair splitters

Steady-state dynamics and non-local correlations in thermoelectric Cooper pair splitters

URL: http://arxiv.org/abs/2406.06053v1
Date: Mon, 10 Jun 2024 06:46:10 GMT
Title: Steady-state dynamics and non-local correlations in thermoelectric Cooper pair splitters
Authors: Arnav Arora, Siddhant Midha, Alexander Zyuzin, Pertti Hakonen, Bhaskaran Muralidharan,
Abstract summary: Recent experiments on Cooper pair splitters using superconductor-quantum dot hybrids have embarked on creating entanglement in the solid-state. We develop a detailed analysis of the observed transport signal to bring out vital insights into the regimes of operation.
Score: 43.62395775086322
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Recent experiments on Cooper pair splitters using superconductor-quantum dot hybrids have embarked on creating entanglement in the solid-state, by engineering the sub-gap processes in the superconducting region. Using the thermoelectric Cooper pair splitter setup [Nat. Comm., 12, 21, (2021)] as a prototype, we develop a detailed analysis of the observed transport signal to bring out vital insights into the regimes of operation and establish the non-local nature of the correlations arising from the crossed Andreev processes. As a striking consequence, contact induced level broadening of the quantum dot's discrete energy spectrum and its hybridization with the superconducting segment, results in a parity reversal of the thermoelectric current along with shifted resonances of the crossed Andreev processes. We conclusively establish the presence of non-local correlations by making a clear nexus with quantum discord. Our detailed analysis thereby provides insights into the gate voltage control of the entanglement generation in superconducting-hybrid Cooper pair splitters.

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