Phys. Rev. Lett. 93, 073901 (2004) [4 pages]Giant Lamb Shift in Photonic CrystalsReceived 13 January 2004; published 10 August 2004 We obtain a general result for the Lamb shift of excited states of multilevel atoms in inhomogeneous electromagnetic structures and apply it to study atomic hydrogen in inverse-opal photonic crystals. We find that the photonic-crystal environment can lead to very large values of the Lamb shift, as compared to the case of vacuum. We also suggest that the position-dependent Lamb shift should extend from a single level to a miniband for an assembly of atoms with random distribution in space, similar to the velocity-dependent Doppler effect in atomic/molecular gases. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.073901
DOI:
10.1103/PhysRevLett.93.073901
PACS:
42.70.Qs, 32.80.–t, 42.50.Ct
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