Transmission and reflection of charge-density wave packets in a quantum Hall edge controlled by a metal gate

Masahiro Matsuura, Takaaki Mano, Takeshi Noda, Naokazu Shibata, Masahiro Hotta, Go Yusa

Research output: Contribution to journalArticlepeer-review

Abstract

Quantum energy teleportation (QET) is a proposed protocol related to quantum vacuum. The edge channels in a quantum Hall system are well suited for the experimental verification of QET. For this purpose, we examine a charge-density wave packet excited and detected by capacitively coupled front gate electrodes. We observe the waveform of the charge packet, which is proportional to the time derivative of the applied square voltage wave. Further, we study the transmission and reflection behaviors of the charge-density wave packet by applying a voltage to another front gate electrode to control the path of the edge state. We show that the threshold voltages where the dominant direction is switched in either transmission or reflection for dense and sparse wave packets are different from the threshold voltage where the current stops flowing in an equilibrium state.

Original languageEnglish
Article number063104
JournalApplied Physics Letters
Volume112
Issue number6
DOIs
Publication statusPublished - 2018 Feb 5

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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