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Creation of arbitrary Dicke and NOON states of trapped-ion qubits by global addressing with composite pulses

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1367_2630_15_2_023039.pdf (449.9Kb)
Date
25/02/2013
Author
Ivanov, Svetoslav Stoychev
Vitanov, Nikolay V.
Korolkova, Natalia
Funder
European Commission
Grant ID
270843
Keywords
Podolsky-Rosen Channels
Quantum Communication
Entanglement
Realization
Dynamics
Gate
QC Physics
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Abstract
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.
Citation
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 . https://doi.org/10.1088/1367-2630/15/2/023039
Publication
New Journal of Physics
Status
Peer reviewed
DOI
https://doi.org/10.1088/1367-2630/15/2/023039
ISSN
1367-2630
Type
Journal article
Rights
© 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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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/4379

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