Dynamical generation and detection of entanglement in neutral leviton pairs

D. Dasenbrook, C. Flindt

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)
154 Downloads (Pure)

Abstract

The entanglement of coherently split electron-hole pairs in an electronic conductor is typically not considered accessible due to particle number conservation and fermionic superselection rules. We demonstrate here that current cross-correlation measurements at the outputs of an electronic Mach-Zehnder interferometer can nevertheless provide a robust witness of electron-hole entanglement. Specifically, we consider neutral excitations generated by modulating the transmission of an unbiased quantum point contact periodically in time. For an optimized modulation profile, an entangled state with one positively-charged leviton (a hole) and one negatively-charged leviton (an electron) gets delocalized over the two paths of the interferometer and is detected at the output arms. We evaluate the influence of finite electronic temperatures and dephasing corresponding to recent experiments.
Original languageEnglish
Article number161412
Pages (from-to)1-5
Number of pages5
JournalPhysical Review B
Volume92
Issue number16
DOIs
Publication statusPublished - 28 Oct 2015
MoE publication typeA1 Journal article-refereed

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