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News and Views
Nature 457, 671 (5 February 2009) | doi:10.1038/457671a; Published online 4 February 2009
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Quantum optics: A shift on a chip
Douglas H. Bradshaw1 & Peter W. Milonni1
Abstract
The Lamb shift, a minute change in certain energy levels of quantum systems that was first measured in atomic hydrogen some 60 years ago, has now been observed in a solid-state superconducting system.
The emission and absorption of light by atoms can be significantly affected by their environment. For many years, physicists have studied how atoms behave in cavities that confine light and restrict the frequencies with which the atoms interact.
- Douglas H. Bradshaw and Peter W. Milonni are at the Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Email: pwm@lanl.gov
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