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Errors in trapped-ion quantum gates due to spontaneous photon scattering



R Ozeri, Wayne M. Itano, Brad R. Blakestad, Joseph W. Britton, J Chiaverini, John D. Jost, C. Langer, Dietrich G. Leibfried, Rainer Reichle, Signe Seidelin, Janus Wesenberg, David J. Wineland


We analyze the error in trapped-ion, hyperfine qubit, quantum gates due to spontaneous scattering of photons from the gate laser beams. We investigate the error in single-ion-qubit rotations that are based on stimulated Raman transitions and in two-ion-qubit entangling phase-gates that are based on spin-dependent forces. This error is compared between different ion species currently investigated as possible quantum information carriers. For both gate types we show that the scattering error can possibly be reduced to below current estimates of the fault-tolerance error threshold with the use of realistic laser power.
Physical Review A (Atomic, Molecular and Optical Physics)


decoherence, quantum information processing, spontaneous photon scattering, trapped-ions


Ozeri, R. , Itano, W. , Blakestad, B. , Britton, J. , Chiaverini, J. , Jost, J. , Langer, C. , Leibfried, D. , Reichle, R. , Seidelin, S. , Wesenberg, J. and Wineland, D. (2007), Errors in trapped-ion quantum gates due to spontaneous photon scattering, Physical Review A (Atomic, Molecular and Optical Physics), [online], (Accessed May 25, 2024)


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Created April 27, 2007, Updated January 27, 2020