Correlated Coherent Oscillations in Coupled Semiconductor Charge Qubits

Gou Shinkai, Toshiaki Hayashi, Takeshi Ota, and Toshimasa Fujisawa
Phys. Rev. Lett. 103, 056802 – Published 28 July 2009

Abstract

We study coherent dynamics of two spatially separated electrons in a coupled semiconductor double quantum dot (DQD). Coherent oscillations in one DQD are strongly influenced by electronic states of the other DQD, or the two electrons simultaneously tunnel in a correlated manner. The observed coherent oscillations are interpreted as various two-qubit operations. The results encourage searching quantum entanglement in electronic devices.

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  • Received 17 January 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.056802

©2009 American Physical Society

Authors & Affiliations

Gou Shinkai1,2, Toshiaki Hayashi1, Takeshi Ota1, and Toshimasa Fujisawa1,2

  • 1NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, 243-0198, Japan
  • 2Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan

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Vol. 103, Iss. 5 — 31 July 2009

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Heating up of Superconductors
January 27, 2017

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications. The papers included in the collection have been made free to read.

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