Ultrafast coherent manipulation of trions in site-controlled nanowire quantum dots

Lagoudakis, K. G. and McMahon, P. L. and Dory, C. and Fischer, K. A. and Müller, K. and Borish, V. and Dalacu, D. and Poole, P. J. and Reimer, M. E. and Zwiller, V. and Yamamoto, Y. and Vuckovic, J. (2016) Ultrafast coherent manipulation of trions in site-controlled nanowire quantum dots. Optica, 3 (12). pp. 1430-1435. ISSN 1899-7015 (https://doi.org/10.1364/OPTICA.3.001430)

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Abstract

Physical implementations of large-scale quantum processors based on solid-state platforms benefit from realizations of quantum bits positioned in regular arrays. Self-assembled quantum dots are well established as promising candidates for quantum optics and quantum information processing, but they are randomly positioned. Site-controlled quantum dots, on the other hand, are grown in pre-defined locations but have not yet been sufficiently developed to be used as a platform for quantum information processing. In this paper, we demonstrate all-optical ultrafast complete coherent control of a qubit formed by the single-spin/trion states of a charged site-controlled nanowire quantum dot. Our results show that site-controlled quantum dots in nanowires are promising hosts of charged-exciton qubits and that these qubits can be cleanly manipulated in the same fashion as has been demonstrated in randomly positioned quantum dot samples. Our findings suggest that many of the related excitonic qubit experiments that have been performed over the past 15 years may work well in the more scalable, site-controlled systems, making them very promising for the realization of quantum hardware.

  • Item type:Article
    ID code:64407
    Dates:
    Date
    Event
    30 November 2016
    Published
    5 November 2016
    Accepted
    Notes:© 2016 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:11 Jun 2018 14:24
    Last modified:09 Apr 2024 00:03
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/64407
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