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Excitation of a Si/SiGe quantum dot using an on-chip microwave antenna

Research output: Contribution to journalJournal article

Published

  • E. Kawakami
  • P. Scarlino
  • L. R. Schreiber
  • Jonathan Prance
  • D. E. Savage
  • M. G. Lagally
  • M. A. Eriksson
  • L. M. K. Vandersypen
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Journal publication date2013
JournalApplied Physics Letters
Volume103
Number of pages5
Early online date26/09/13
Original languageEnglish

Abstract

We report transport measurements on a Si/SiGe quantum dot subject to microwave excitation via an on-chip antenna. The response shows signatures of photon-assisted tunneling and only a small effect on charge stability. We also explore the use of a d.c. current applied to the antenna for generating tunable, local magnetic field gradients and put bounds on the achievable field gradients, limited by heating of the reservoirs.