Abstract

The probe absorption spectrum of a four-level atom embedded in a double-band photonic crystal is discussed in this paper. The double V-type transitions from the two upper levels to the two lower levels interact with the free vacuum modes and the photonic band gap (PBG) modes synchronously. We investigate the quantum interferences in the probe absorption spectrum. And the new features of transparency are also predicted.

© 2005 Chinese Optics Letters

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