Uys, HBiercuk, MJVanDevender, APOspelkaus, CMeiser, DOzeri, RBollinger, JJ2010-12-082010-12-082010-11Uys,H, Biercuk, MJ, VanDevender, AP et al. 2010. Decoherence due to elastic rayleigh scattering. Physical Review Letters, Vol. 105 (200401), pp 200401-1 to 200401-40031-9007http://prl.aps.org/pdf/PRL/v105/i20/e200401http://hdl.handle.net/10204/4630Copyright: 2010 American Physical SocietyThe authors present theoretical and experimental studies of the decoherence of hyperfine ground-state superpositions due to elastic Rayleigh scattering of light off resonant with higher lying excited states. They demonstrate that under appropriate conditions, elastic Rayleigh scattering can be the dominant source of decoherence, contrary to previous discussions in the literature. They show that the elastic-scattering decoherence rate of a two-level system is given by the square of the difference between the elastic scattering amplitudes for the two levels, and that for certain detunings of the light, the amplitudes can interfere constructively even when the elastic-scattering rates from the two levels are equal. They confirm this prediction through calculations and measurements of the total decoherence rate for a superposition of the valence electron spin levels in the ground state of 9Beþ in a 4.5 T magnetic field.enDecoherenceIon trapElastic Rayleigh scatteringQuantum informationArticleUys, H., Biercuk, M., VanDevender, A., Ospelkaus, C., Meiser, D., Ozeri, R., & Bollinger, J. (2010). Decoherence due to elastic rayleigh scattering. http://hdl.handle.net/10204/4630Uys, H, MJ Biercuk, AP VanDevender, C Ospelkaus, D Meiser, R Ozeri, and JJ Bollinger "Decoherence due to elastic rayleigh scattering." (2010) http://hdl.handle.net/10204/4630Uys H, Biercuk M, VanDevender A, Ospelkaus C, Meiser D, Ozeri R, et al. Decoherence due to elastic rayleigh scattering. 2010; http://hdl.handle.net/10204/4630.TY - Article AU - Uys, H AU - Biercuk, MJ AU - VanDevender, AP AU - Ospelkaus, C AU - Meiser, D AU - Ozeri, R AU - Bollinger, JJ AB - The authors present theoretical and experimental studies of the decoherence of hyperfine ground-state superpositions due to elastic Rayleigh scattering of light off resonant with higher lying excited states. They demonstrate that under appropriate conditions, elastic Rayleigh scattering can be the dominant source of decoherence, contrary to previous discussions in the literature. They show that the elastic-scattering decoherence rate of a two-level system is given by the square of the difference between the elastic scattering amplitudes for the two levels, and that for certain detunings of the light, the amplitudes can interfere constructively even when the elastic-scattering rates from the two levels are equal. They confirm this prediction through calculations and measurements of the total decoherence rate for a superposition of the valence electron spin levels in the ground state of 9Beþ in a 4.5 T magnetic field. DA - 2010-11 DB - ResearchSpace DP - CSIR KW - Decoherence KW - Ion trap KW - Elastic Rayleigh scattering KW - Quantum information LK - https://researchspace.csir.co.za PY - 2010 SM - 0031-9007 T1 - Decoherence due to elastic rayleigh scattering TI - Decoherence due to elastic rayleigh scattering UR - http://hdl.handle.net/10204/4630 ER -