Propagation of quantum properties of sub-picosecond solitons in a fiber

Propagation of quantum properties of sub-picosecond solitons in a fiber

We present new results on photon number squeezing of spectrally filtered solitons in fibers. The impact of frequency low-, high-, and bandpass filtering on noise reduction has been measured as a function of fiber length for 130-fs pulses close to the soliton energy. For short fibers our results agre...

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Veröffentlicht in:Optics express 1998-02, Vol.2 (3), p.77-83
Hauptverfasser: Spaelter, S, Burk, M, Stroessner, U, Sizmann, A, Leuchs, G
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container_title Optics express
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creator Spaelter, S
Burk, M
Stroessner, U
Sizmann, A
Leuchs, G
description We present new results on photon number squeezing of spectrally filtered solitons in fibers. The impact of frequency low-, high-, and bandpass filtering on noise reduction has been measured as a function of fiber length for 130-fs pulses close to the soliton energy. For short fibers our results agree qualitatively with theoretical predictions. For longer fibers, however, the measured squeezing increases to an unexpectedly large value. Filtering out the long-wavelength components of strongly Raman-shifted, higher energy pulses squeezed the directly detected photocurrent fluctuations down to 3.8+/-0,2 dB (59%) below the shot noise level. The measured noise reductions are broadband from 5 to 90 MHz.
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title Propagation of quantum properties of sub-picosecond solitons in a fiber
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