Applied Physics B

, Volume 114, Issue 1–2, pp 45–61 | Cite as

Quantum control of qubits and atomic motion using ultrafast laser pulses

  • J. Mizrahi
  • B. Neyenhuis
  • K. G. Johnson
  • W. C. Campbell
  • C. Senko
  • D. Hayes
  • C. Monroe
Article

Abstract

Pulsed lasers offer significant advantages over continuous wave (CW) lasers in the coherent control of qubits. Here we review the theoretical and experimental aspects of controlling the internal and external states of individual trapped atoms with pulse trains. Two distinct regimes of laser intensity are identified. When the pulses are sufficiently weak that the Rabi frequency Ω is much smaller than the trap frequency ωtrap, sideband transitions can be addressed and atom-atom entanglement can be accomplished in much the same way as with CW lasers. By contrast, if the pulses are very strong Ωωtrap, impulsive spin-dependent kicks can be combined to create entangling gates which are much faster than a trap period. These fast entangling gates should work outside of the Lamb-Dicke regime and be insensitive to thermal atomic motion.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • J. Mizrahi
    • 1
  • B. Neyenhuis
    • 1
  • K. G. Johnson
    • 1
  • W. C. Campbell
    • 2
  • C. Senko
    • 1
  • D. Hayes
    • 1
  • C. Monroe
    • 1
  1. 1.Department of Physics and National Institute of Standards and Technology, Joint Quantum InstituteUniversity of Maryland, College ParkCollege ParkUSA
  2. 2.Department of Physics and AstronomyUniversity of California, Los AngelesLos AngelesUSA

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