Spectroscopy Using Quantum Logic

Published

July 29, 2005

Author(s)

Piet Schmidt, Till P. Rosenband, C. Langer, Wayne M. Itano, James C. Bergquist, David J. Wineland

Abstract

We have demonstrated experimentally a general technique for precision spectroscopy of atoms that lack suitable transitions for efficient laser cooling, internal state preparation, and detection. In our implementation with trapped atomic ions, an auxillary "logic" ion provides sympathetic laser cooling, state initialization, and detection for simultaneously trapped "spectroscopy" ion. Detection is achieved by applying a mapping operation on each ion, which results in a coherent transfer of the spectroscopy ion's internal state onto the logic ion, where it is then measured with high efficiency. Our experimental realization, which uses \Be as the logic ion, and \Al as the spectroscopy ion, indicates the feasibility of applying this technique to realize accurate optical clocks based on single ions.

Citation

Science

Volume

309

Pub Type

Journals

Download Paper

Local Download

Keywords

atom trapping and cooling, quantum control, quantum entanglement, quantum information processing, quantum-state engineering, teleportation, trapped ions

Citation

Schmidt, P. , Rosenband, T. , Langer, C. , Itano, W. , Bergquist, J. and Wineland, D. (2005), Spectroscopy Using Quantum Logic, Science, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50142 (Accessed October 17, 2025)