Applied Physics B

, Volume 84, Issue 1–2, pp 243–246 | Cite as

Demonstration of nanophotonic NOT gate using near-field optically coupled quantum dots

  • T. KawazoeEmail author
  • K. Kobayashi
  • K. Akahane
  • M. Naruse
  • N. Yamamoto
  • M. Ohtsu


We propose and demonstrate the operation of a nanometric optical NOT gate using CuCl quantum dots coupled via an optical near-field interaction. The device was smaller than 20 nm and its repeated operation was verified. The operating energy of this device was much lower than that of a conventional photonic device. We also introduce all-optical NAND and NOR gates using coupled quantum dots. Toward an actual nanophotonic device, we discuss the possibility of coupled InAlAs quantum dots. A double layer of InAlAs quantum dots for nanophotonic device operation was prepared using molecular beam epitaxial growth. We obtained a near-field spectroscopy signal, indicating that the InAlAs quantum dots coupled with the optical near field acted as a NOT gate. The experimental results show that the sample has great potential as an actual nanophotonic device.


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  1. 1.
    M. Ohtsu, K. Kobayashi, T. Kawazoe, S. Sangu, T. Yatsui, IEEE J. Sel. Top. Quantum Electron. 8, 839 (2002)ADSCrossRefGoogle Scholar
  2. 2.
    T. Kawazoe, K. Kobayashi, J. Lim, Y. Narita, M. Ohtsu, Phys. Rev. Lett. 88, 067404 (2002)ADSCrossRefGoogle Scholar
  3. 3.
    T. Kawazoe, K. Kobayashi, S. Sangu, M. Ohtsu, Appl. Phys. Lett. 82, 2957 (2003)ADSCrossRefGoogle Scholar
  4. 4.
    T. Kawazoe, K. Kobayashi, S. Sangu, M. Ohtsu, J. Microsc. 210, 247 (2003)MathSciNetCrossRefGoogle Scholar
  5. 5.
    W. Nomura, T. Yatsui, M. Ohtsu, Appl. Phys. Lett. 86, 181108 (2005)ADSCrossRefGoogle Scholar
  6. 6.
    S. Sangu, K. Kobayashi, A. Shojiguchi, M. Ohtsu, Phys. Rev. B 69, 115334 (2004)ADSCrossRefGoogle Scholar
  7. 7.
    T. Kawazoe, K. Kobayashi, M. Ohtsu, Appl. Phys. Lett. 86, 103102 (2005)ADSCrossRefGoogle Scholar
  8. 8.
    N. Sakakura, Y. Masumoto, Phys. Rev. B 56, 4051 (1997)ADSCrossRefGoogle Scholar
  9. 9.
    A.I. Ekimov, Al.L. Eflos, A.A. Onushchenko, Solid State Commun. 56, 921 (1985)ADSCrossRefGoogle Scholar
  10. 10.
    T. Itoh, S. Yano, N. Katagiri, Y. Iwabuchi, C. Gourdon, A.I. Ekimov, J. Luminesc. 6061, 396 (1994)CrossRefGoogle Scholar
  11. 11.
    L. Goldstein, F. Glas, J.Y. Marzin, M.N. Charasse, G. Le Roux, Appl. Phys. Lett. 47, 1099 (1985)ADSCrossRefGoogle Scholar
  12. 12.
    H. Saito, K. Nishi, S. Sugou, Appl. Phys. Lett. 73, 2742 (1998)ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • T. Kawazoe
    • 1
    Email author
  • K. Kobayashi
    • 2
  • K. Akahane
    • 3
  • M. Naruse
    • 3
  • N. Yamamoto
    • 3
  • M. Ohtsu
    • 1
    • 4
  1. 1.Japan Science and Technology AgencyTokyoJapan
  2. 2.Department of PhysicsTokyo Institute of TechnologyTokyoJapan
  3. 3.National Institute of Information and Communications TechnologyTokyoJapan
  4. 4.Department of Electronics EngineeringUniversity of TokyoTokyoJapan

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