Creation of arbitrary Dicke and NOON states of trapped-ion qubits by global addressing with composite pulses
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We propose a fast and efficient technique to create classes of highly entangled states of trapped ions, such as arbitrary Dicke states and superpositions of them, e.g. NOON states. The ions are initialized in the phonon ground state and are addressed globally with a composite pulse that is resonant with the first motional sideband. The technique is fairly robust to parameter fluctuations and operates on comparatively short time scales, as resonant interactions allow one to use the minimum laser pulse area. The number of single pulses from the composite sequence is equal to the number of ions; thus the implementation complexity grows only linearly with the size of the system. The approach does not require individual addressing of the ions in the trap and can be applied both inside and outside the Lamb-Dicke regime.
Ivanov , S S , Vitanov , N V & Korolkova , N 2013 , ' Creation of arbitrary Dicke and NOON states of trapped-ion qubits by global addressing with composite pulses ' New Journal of Physics , vol 15 , 023039 . DOI: 10.1088/1367-2630/15/2/023039
New Journal of Physics
© 2013 IOP Publishing and Deutsche Physikalische Gesellschaft. Svetoslav S Ivanov et al 2013 New J. Phys. 15 023039. Content from this work may be used under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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