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Quantum Electronics and Laser Science Conference

fs photon-number squeezed light generation in a semiconductor waveguide via spectral filtering

Ward, Kastner, Jü, Schucan, Ryan, Fox, Aitchison, Ironside

Published Jan 1, 2000• 0 citations
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fs photon-number squeezed light generation in a semiconductor waveguide via spectral filtering

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Summary form only given. Several experiments have been performed in optical fibers to generate photon-number squeezed pulses of light. Among these, are experiments employing a spectral filter to exploit the spectral correlations created during pulse propagation along a fiber. We recently reported the generation of photon-number squeezing in an AlGaAs waveguide as a result of multi-photon absorption and we now extend this work to show an increase in the degree of squeezing obtained with appropriate spectral filtering. Unlike much of the fiber work, which used long propagation distances, the results here are produced in a 2-mm-long semiconductor waveguide. The waveguide structure is composed of AlGaAs grown on a GaAs substrate and consisted of a l /spl mu/mm planar high-index waveguiding layer with lateral confinement provided by a surface rib. The estimated effective modal area is 6 /spl mu/m/sup 2/.

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Photon-number squeezing by spectrally filtering light from a semiconductor waveguide

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Summary form only given. Photon-number squeezing can occur in semiconductor waveguides due to multiphoton absorption. Previous work has been extended to demonstrate an increase in the degree of squeezing as a result of spectral filtering. In contrast to previous experiments, which were performed in long optical fibres, the results are produced in a 2 mm AlGaAs semiconductor waveguide. The results are discussed in terms of spectra correlations induced by self-phase modulation. The photon-number distribution of the output beam is then dependent on the correlations preserved by the spectral filter.

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Generation of quantum correlation between co-propagating pulses in optical fibers

Kenichi Hirosawa, H. Furumochi, Atsushi Tada +4 more

Experimental demonstration of more than 50% photon-number squeezing obtained using microstructure fibers (MFs) , of which zero-dispersion wavelength locates at 820 nm, in a spectral filtering scheme with 40-fs laser pulses at /spl lambda/ = 810 nm is reported. The highest photon-number squeezing of -4.6 dB is obtained when a soliton-like Stokes Raman pulse, which broke up from the main pulse, exhibiting a self-frequency shift toward the longer wavelength, is preserved by low-pass spectral filtering from the white-light spectrum generated from the 30-cm MF.

European Quantum Electronics Conference (EQEC)•Jan 18, 2006•1 citation
Summary form only given. Several experiments have been performed in optical fibers to generate photon-number squeezed pulses of light. Among these, are experiments employing a spectral filter to exploit the spectral correlations created during pulse propagation along a fiber. We recently reported the generation of photon-number squeezing in an AlGaAs waveguide as a result of multi-photon absorption and we now extend this work to show an increase in the degree of squeezing obtained with appropriate spectral filtering. Unlike much of the fiber work, which used long propagation distances, the results here are produced in a 2-mm-long semiconductor waveguide. The waveguide structure is composed of AlGaAs grown on a GaAs substrate and consisted of a l /spl mu/mm planar high-index waveguiding layer with lateral confinement provided by a surface rib. The estimated effective modal area is 6 /spl mu/m/sup 2/.
Summary form only given. Photon-number squeezing can occur in semiconductor waveguides due to multiphoton absorption. Previous work has been extended to demonstrate an increase in the degree of squeezing as a result of spectral filtering. In contrast to previous experiments, which were performed in long optical fibres, the results are produced in a 2 mm AlGaAs semiconductor waveguide. The results are discussed in terms of spectra correlations induced by self-phase modulation. The photon-number distribution of the output beam is then dependent on the correlations preserved by the spectral filter.
Experimental demonstration of more than 50% photon-number squeezing obtained using microstructure fibers (MFs) , of which zero-dispersion wavelength locates at 820 nm, in a spectral filtering scheme with 40-fs laser pulses at /spl lambda/ = 810 nm is reported. The highest photon-number squeezing of -4.6 dB is obtained when a soliton-like Stokes Raman pulse, which broke up from the main pulse, exhibiting a self-frequency shift toward the longer wavelength, is preserved by low-pass spectral filtering from the white-light spectrum generated from the 30-cm MF.