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Fast and Robust Laser Cooling of Trapped Systems

Fast and Robust Laser Cooling of Trapped Systems. Javier Cerrillo-Moreno , Alex Retzker, Martin B. Plenio. Obergurgl, 7 th June 2010. Motivation. Quantum Information Processing Quantum Simulation Quantum Optics Localized quantum object Precision measurements Spectroscopy. R. Blatt.

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Fast and Robust Laser Cooling of Trapped Systems

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  1. Fast and RobustLaser Cooling ofTrapped Systems Javier Cerrillo-Moreno, Alex Retzker, Martin B. Plenio Obergurgl, 7th June 2010

  2. Motivation • Quantum Information Processing • Quantum Simulation • Quantum Optics • Localized quantum object • Precision measurements • Spectroscopy R. Blatt

  3. Overview • Cooling schemes for trapped systems • Building Blocks • EIT cooling • Stark-shift cooling • Proposal • Concept • Mechanism • Features

  4. One-phonon processes • Carrier transition • Blue side-band transition • Red side-band transition

  5. Side-band cooling • Carrier Transition • Blue side-band transition • Red side-band transition

  6. Dark-state cooling • Carrier Transition • Blue side-band transition • Red side-band transition

  7. Dark-state cooling • Carrier Transition • Blue side-band transition • Red side-band transition

  8. Double Dark-state cooling ? • Carrier Transition • Blue side-band transition • Red side-band transition

  9. Overview • Cooling schemes for trapped systems • Building Blocks • EIT cooling • Stark-shift cooling • Proposal • Concept • Mechanism • Features

  10. Ω, -η Ω, η Electromagnetically-Induced Transparency EIT cooling Morigi, Eschner and Keitel PRL, 85 (2004)

  11. Ωc, η Ω Ω Stark Shift cooling Stark Shift gate ν A. Retzker, M. Plenio, New J. of Phys. 9 (2007) 279

  12. Overview • Cooling schemes for trapped systems • Building Blocks • EIT cooling • Stark-shift cooling • Proposal • Concept • Mechanism • Features J. Cerrillo, A. Retzker, M. Plenio, Phys. Rev. Lett. 104, 043003 (2010)

  13. Ωb, ηb Ωb, ηb Ωa Ωa, -ηa Ωa, ηa Ωa Robust cooling – Concept J. Cerrillo, A. Retzker, M. Plenio, Phys. Rev. Lett. 104, 043003 (2010)

  14. Ωa, -ηa Ωa, ηa Ωb, ηb Robust cooling – Steady state • Stark Shift OR EIT cooling • Stark Shift AND EIT cooling J. Cerrillo, A. Retzker, M. Plenio, Phys. Rev. Lett. 104, 043003 (2010)

  15. Hint=HEIT+HSS=0+a HEIT HEIT HEIT HEIT HSS≠a HEIT=0 Robust cooling – Mechanism J. Cerrillo, A. Retzker, M. Plenio, Phys. Rev. Lett. 104, 043003 (2010)

  16. Ωa, -ηa Ωa, ηa Ωb, ηb Robust cooling – Features Final Temperature Cooling rate Implementation J. Cerrillo, A. Retzker, M. Plenio, Phys. Rev. Lett. 104, 043003 (2010)

  17. Ωa, -ηa Ωa, ηa Ωb, ηb Robust cooling - Implementation J. Cerrillo, A. Retzker, M. Plenio, Phys. Rev. Lett. 104, 043003 (2010)

  18. Ωa, -ηa Ωa, ηa Ωb, ηb Robust cooling – Features Final Temperature Cooling rate Implementation Robustness J. Cerrillo, A. Retzker, M. Plenio, Phys. Rev. Lett. 104, 043003 (2010)

  19. Ωa, -ηa Ωa, ηa Ωb, ηb Robust cooling – Robustness J. Cerrillo, A. Retzker, M. Plenio, Phys. Rev. Lett. 104, 043003 (2010)

  20. Ωa, -ηa Ωa, ηa Ωb, ηb Summary • Interference of 2 cooling schemes • Steady state is a pure state • Best final T and cooling rate • Easy implementation • Experimentally robust J. Cerrillo, A. Retzker, M. Plenio, Phys. Rev. Lett. 104, 043003 (2010)

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