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Efficient preparation and detection of microwave dressed-state qubits and qutrits with trapped ions

J. Randall, S. Weidt, E. D. Standing, K. Lake, S. C. Webster, D. F. Murgia, T. Navickas, K. Roth, and W. K. Hensinger
Phys. Rev. A 91, 012322 – Published 14 January 2015

Abstract

We demonstrate a method for preparing and detecting all eigenstates of a three-level microwave dressed system with a single trapped ion. The method significantly reduces the experimental complexity of gate operations with dressed-state qubits, as well as allowing all three of the dressed states to be prepared and detected, thereby providing access to a qutrit that is well protected from magnetic field noise. In addition, we demonstrate individual addressing of the clock transitions in two ions using a strong static magnetic field gradient, showing that our method can be used to prepare and detect microwave dressed states in a string of ions when performing multi-ion quantum operations with microwave and radio frequency fields. The individual addressability of clock transitions could also allow for the control of pairwise interaction strengths between arbitrary ions in a string using lasers.

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  • Received 5 September 2014
  • Revised 13 October 2014

DOI:https://doi.org/10.1103/PhysRevA.91.012322

©2015 American Physical Society

Authors & Affiliations

J. Randall1,2, S. Weidt1, E. D. Standing1, K. Lake1, S. C. Webster1, D. F. Murgia1,2, T. Navickas1, K. Roth1, and W. K. Hensinger1,*

  • 1Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, United Kingdom
  • 2QOLS, Blackett Laboratory, Imperial College London, London, SW7 2BW, United Kingdom

  • *w.k.hensinger@sussex.ac.uk

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Vol. 91, Iss. 1 — January 2015

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