Time-resolved detection of relative-intensity squeezed nanosecond pulses in an (87)Rb vapor

Imad H. Agha (1) , Christina Giarmatzi (1) , Quentin Glorieux (2, 3) , Thomas Coudreau (2) , Philippe Grangier (1) , Gaétan Messin (1)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Optique quantique
2 MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques
3 NIST - Atomic Physics Division

We present theoretical and experimental results on the generation and detection of pulsed, relative-intensity squeezed light in a hot (87)Rb vapor. The intensity noise correlations between a pulsed probe beam and its conjugate, generated through nearly degenerate four-wave mixing in a double-lambda system, are studied numerically and measured experimentally via time-resolved balanced detection. We predict and observe approximately -1 dB of time-resolved relative-intensity squeezing with 50 ns pulses at 1MHz repetition rate. (-1.34 dB corrected for loss).

Domaines: Physique Quantique [quant-ph]

Imad H. Agha, Christina Giarmatzi, Quentin Glorieux, Thomas Coudreau, Philippe Grangier, et al.. Time-resolved detection of relative-intensity squeezed nanosecond pulses in an (87)Rb vapor. New Journal of Physics, 2011, 13, pp.043030. ⟨10.1088/1367-2630/13/4/043030⟩. ⟨hal-00624767⟩