Magnetically switched quantum waveguide qubit

J. Harris, R. Akis, D. K. Ferry

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Recently, quantum computing has gained notoriety as a computational method that has the possibility to greatly increase the speed of calculations compared with traditional, binary computing. To this end, simulations of a quantum controlled-not gate implemented by a quantum waveguide are examined. The waveguide is composed of two quantum wires and a tuned coupling region and the simulations consist of a solution to Schrödinger's equation via the Usuki method of mode matching. The use of Gaussian wave packets in previous work on this topic is questioned and various methods of tuning the coupling region in order to guide the quantum wave are investigated. Simulations are shown for a tuned waveguide in which the wave can be switched by the application of an external magnetic field.

Original languageEnglish (US)
Pages (from-to)2214-2215
Number of pages2
JournalApplied Physics Letters
Volume79
Issue number14
DOIs
StatePublished - Oct 1 2001

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waveguides
simulation
quantum computation
quantum wires
wave packets
tuning
magnetic fields

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Harris, J., Akis, R., & Ferry, D. K. (2001). Magnetically switched quantum waveguide qubit. Applied Physics Letters, 79(14), 2214-2215. https://doi.org/10.1063/1.1405428

Magnetically switched quantum waveguide qubit. / Harris, J.; Akis, R.; Ferry, D. K.

In: Applied Physics Letters, Vol. 79, No. 14, 01.10.2001, p. 2214-2215.

Research output: Contribution to journalArticle

Harris, J, Akis, R & Ferry, DK 2001, 'Magnetically switched quantum waveguide qubit', Applied Physics Letters, vol. 79, no. 14, pp. 2214-2215. https://doi.org/10.1063/1.1405428
Harris, J. ; Akis, R. ; Ferry, D. K. / Magnetically switched quantum waveguide qubit. In: Applied Physics Letters. 2001 ; Vol. 79, No. 14. pp. 2214-2215.
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