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Macroscopic Quantum Phenomena in Atomic Bose-Einstein Condensates

In: Macroscopic Quantum Coherence and Quantum Computing

Author

Listed:
  • Fernando Sols

    (Universidad Autonoma de Madrid, Dpto. Física Teórica de la Materia Condensada, C- V)

  • Sigmund Kohler

    (Universidad Autonoma de Madrid, Dpto. Física Teórica de la Materia Condensada, C- V)

Abstract

We review some aspects of the physics of macroscopic quantum phenomena in Bose-Einstein condensates. Depending on the relative strength of the interaction and Josephson coupling energies, a double condensate may exhibit three different regimes: Rabi, Josephson, and Fock. In a macroscopic quantum interference experiment, the relative phase of two independent condensates may become well-defined when atoms emitted from them are forced to interfere. This process competes with the ballistic randomization of the phase due to interactions. A steady state is reached when the phase becomes defined by the detections at the same rate at which it is randomized. The resulting quantum phase uncertainty sets a fundamental limit to the achievable phase resolution.

Suggested Citation

  • Fernando Sols & Sigmund Kohler, 2001. "Macroscopic Quantum Phenomena in Atomic Bose-Einstein Condensates," Springer Books, in: Dmitri V. Averin & Berardo Ruggiero & Paolo Silvestrini (ed.), Macroscopic Quantum Coherence and Quantum Computing, pages 41-50, Springer.
    • Handle: RePEc:spr:sprchp:978-1-4615-1245-5_6
    DOI: 10.1007/978-1-4615-1245-5_6
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