Electron Waiting Times of a Cooper Pair Splitter

Nicklas Walldorf, Ciprian Padurariu, Antti-Pekka Jauho, Christian Flindt

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Abstract

Electron waiting times are an important concept in the analysis of quantum transport in nanoscale conductors. Here we show that the statistics of electron waiting times can be used to characterize Cooper pair splitters that create spatially separated spin-entangled electrons. A short waiting time between electrons tunneling into different leads is associated with the fast emission of a split Cooper pair, while long waiting times are governed by the slow injection of Cooper pairs from a superconductor. Experimentally, the waiting time distributions can be measured using real-time single-electron detectors in the regime of slow tunneling, where conventional current measurements are demanding. Our work is important for understanding the fundamental transport processes in Cooper pair splitters and the predictions may be verified using current technology.
Original languageEnglish
Article number087701
JournalPhysical Review Letters
Volume120
Issue number8
Number of pages7
ISSN0031-9007
DOIs
Publication statusPublished - 2018

Bibliographical note

© 2018 American Physical Society

Cite this

Walldorf, Nicklas ; Padurariu, Ciprian ; Jauho, Antti-Pekka ; Flindt, Christian. / Electron Waiting Times of a Cooper Pair Splitter. In: Physical Review Letters. 2018 ; Vol. 120, No. 8.
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Electron Waiting Times of a Cooper Pair Splitter. / Walldorf, Nicklas; Padurariu, Ciprian; Jauho, Antti-Pekka; Flindt, Christian.

In: Physical Review Letters, Vol. 120, No. 8, 087701, 2018.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - Electron Waiting Times of a Cooper Pair Splitter

AU - Walldorf, Nicklas

AU - Padurariu, Ciprian

AU - Jauho, Antti-Pekka

AU - Flindt, Christian

N1 - © 2018 American Physical Society

PY - 2018

Y1 - 2018

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AB - Electron waiting times are an important concept in the analysis of quantum transport in nanoscale conductors. Here we show that the statistics of electron waiting times can be used to characterize Cooper pair splitters that create spatially separated spin-entangled electrons. A short waiting time between electrons tunneling into different leads is associated with the fast emission of a split Cooper pair, while long waiting times are governed by the slow injection of Cooper pairs from a superconductor. Experimentally, the waiting time distributions can be measured using real-time single-electron detectors in the regime of slow tunneling, where conventional current measurements are demanding. Our work is important for understanding the fundamental transport processes in Cooper pair splitters and the predictions may be verified using current technology.

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DO - 10.1103/PhysRevLett.120.087701

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