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Phys Rev Lett. 2001 Feb 12;86(7):1179-82.

Quantum phase retrieval of a Rydberg wave packet using a half-cycle pulse.

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  • 1Physics Department, University of Michigan, Ann Arbor, Michigan 48109-1120, USA.


A terahertz half-cycle pulse was used to retrieve information stored as quantum phase in an N-state Rydberg atom data register. The register was prepared as a wave packet with one state phase reversed from the others (the "marked bit"). A half-cycle pulse then drove a significant portion of the electron probability into the flipped state via multimode interference.

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