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Quantum technologies

Dieter Meschede's research group
Home Group members Deepak Pandey
Group members
Dr. Deepak Pandey
Position: Postdoc
Field of research: Fibre cavity QED
Institut für Angewandte Physik
Wegelerstr. 8
D-53115 Bonn
Office room: 114
Laboratory room: 219
E-mail: This e-mail address is being protected from spam bots, you need JavaScript enabled to view it.
Office: +49 228 73-6580
Laboratory: +49 228 73-3485
Fax: +49 228 73-3474


  • J. Gallego, W. Alt, T. Macha, M. Martinez-Dorantes, D. Pandey and D. Meschede
    Strong Purcell effect on a neutral atom trapped in an open fiber cavity, (2018)arXivBibTeX

    We observe a sixfold Purcell broadening of the D2 line of an optically trapped 87Rb atom strongly coupled to a fiber cavity. Under external illumination by a near-resonant laser, up to 90% of the atom's fluorescence is emitted into the resonant cavity mode. The sub-Poissonian statistics of the cavity output and the Purcell enhancement of the atomic decay rate are confirmed by the observation of a strongly narrowed antibunching dip in the photon autocorrelation function. The photon leakage through the higher-transmission mirror of the single-sided resonator is the dominant contribution to the field decay (κ≈2π×50 MHz), thus offering a high-bandwidth, fiber-coupled channel for photonic interfaces such as quantum memories and single-photon sources.