Düsseldorf 2007 – scientific programme
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SYHW: Memorial Symposium Herbert Walther
SYHW 1: Memorial Symposium Herbert Walther
SYHW 1.3: Invited Talk
Thursday, March 22, 2007, 20:45–21:15, 6J
Spontaneous Emission from an Extended Ensemble of N Atoms: Single Photon Dicke States — •Marlan Scully — Max-Planck-Institut für Quantenoptik, Texas A&M University, and Princeton University
A collection of N static atoms is fixed in a crystal at a low temperature and prepared by a pulse of incident radiation of wave vector k0→ [1]. The N atoms are well described by an entangled single photon Dicke-like state, in which each atom carries a characteristic phase factor exp(ik0→rj→) where rj→ is the atomic position in the crystal. It is shown that a single photon absorbed by the N atoms will be followed by spontaneous emission with an enhanced or suppressed emission rate. Furthermore, phase matched emission is found when one photon is absorbed by N atoms followed by two-photon down-conversion. Connections with coherent Mössbauer γ-ray scattering will be discussed.
[1] M.O. Scully, E.S. Fry, C.H.R. Ooi, and K. Wódkiewicz, PRL 96, 010501 (2006).