Frontiers in Optics 2011/Laser Science XXVII, 2011
ABSTRACT Two photons having different colors can exhibit the Hong-Ou-Mandel interference effect i... more ABSTRACT Two photons having different colors can exhibit the Hong-Ou-Mandel interference effect if the usual beam splitter is replaced by Bragg scattering via four-wave mixing in an optical fiber, which acts as a frequency shifter.
The discovery of the platinum-group element (PGE) enrichment in the Cretaceous–Tertiary (K–T) bou... more The discovery of the platinum-group element (PGE) enrichment in the Cretaceous–Tertiary (K–T) boundary impact layer popularized the use of PGEs as geochemical event markers and prompted an explosion of interest in these elements whose geochemical behavior is ...
We consider quantum frequency conversion using four-wave mixing Bragg scattering and the prospect... more We consider quantum frequency conversion using four-wave mixing Bragg scattering and the prospects for multi-plexing using the temporal modes. We find that there is an optimal strength parameter, but that the fiber length is less critical.
We study the effect of frequency translation of single-photon states in optical fiber through use... more We study the effect of frequency translation of single-photon states in optical fiber through use of the Bragg scattering four-wave mixing process. Preliminary evidence shows that this goal has been achieved.
2005 Quantum Electronics and Laser Science Conference, 2005
We present a method to characterize one- and two-photon transverse wave functions in coordinate s... more We present a method to characterize one- and two-photon transverse wave functions in coordinate space. Measurements of transverse Wigner functions for one- and two-photon states from a spontaneous parametric down conversion source are being made.
In this paper we consider frequency translation enabled by Bragg scattering, a four-wave mixing p... more In this paper we consider frequency translation enabled by Bragg scattering, a four-wave mixing process. First we introduce the theoretical background of the Green function formalism and the Schmidt decomposition. Next the Green functions for the low-conversion regime are derived perturbatively in the frequency domain, using the methods developed for three-wave mixing, then transformed to the time domain. These results are also derived and verified using an alternative time-domain method, the results of which are more general. For the first time we include the effects of convecting pumps, a more realistic assumption, and show that separability and arbitrary reshaping is possible. This is confirmed numerically for Gaussian pumps as well as higher-order Hermite-Gaussian pumps.
Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VII, 2003
ABSTRACT We demonstrate phase space tomography for the measurement of the transversal spatial coh... more ABSTRACT We demonstrate phase space tomography for the measurement of the transversal spatial coherence function of light after propagation through a scattering medium. The results of this approach are compared to measurements performed with shearing-interferometry. Implications for parallel Optical Coherence Tomography will be briefly discussed.
Frontiers in Optics 2011/Laser Science XXVII, 2011
ABSTRACT Two photons having different colors can exhibit the Hong-Ou-Mandel interference effect i... more ABSTRACT Two photons having different colors can exhibit the Hong-Ou-Mandel interference effect if the usual beam splitter is replaced by Bragg scattering via four-wave mixing in an optical fiber, which acts as a frequency shifter.
The discovery of the platinum-group element (PGE) enrichment in the Cretaceous–Tertiary (K–T) bou... more The discovery of the platinum-group element (PGE) enrichment in the Cretaceous–Tertiary (K–T) boundary impact layer popularized the use of PGEs as geochemical event markers and prompted an explosion of interest in these elements whose geochemical behavior is ...
We consider quantum frequency conversion using four-wave mixing Bragg scattering and the prospect... more We consider quantum frequency conversion using four-wave mixing Bragg scattering and the prospects for multi-plexing using the temporal modes. We find that there is an optimal strength parameter, but that the fiber length is less critical.
We study the effect of frequency translation of single-photon states in optical fiber through use... more We study the effect of frequency translation of single-photon states in optical fiber through use of the Bragg scattering four-wave mixing process. Preliminary evidence shows that this goal has been achieved.
2005 Quantum Electronics and Laser Science Conference, 2005
We present a method to characterize one- and two-photon transverse wave functions in coordinate s... more We present a method to characterize one- and two-photon transverse wave functions in coordinate space. Measurements of transverse Wigner functions for one- and two-photon states from a spontaneous parametric down conversion source are being made.
In this paper we consider frequency translation enabled by Bragg scattering, a four-wave mixing p... more In this paper we consider frequency translation enabled by Bragg scattering, a four-wave mixing process. First we introduce the theoretical background of the Green function formalism and the Schmidt decomposition. Next the Green functions for the low-conversion regime are derived perturbatively in the frequency domain, using the methods developed for three-wave mixing, then transformed to the time domain. These results are also derived and verified using an alternative time-domain method, the results of which are more general. For the first time we include the effects of convecting pumps, a more realistic assumption, and show that separability and arbitrary reshaping is possible. This is confirmed numerically for Gaussian pumps as well as higher-order Hermite-Gaussian pumps.
Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VII, 2003
ABSTRACT We demonstrate phase space tomography for the measurement of the transversal spatial coh... more ABSTRACT We demonstrate phase space tomography for the measurement of the transversal spatial coherence function of light after propagation through a scattering medium. The results of this approach are compared to measurements performed with shearing-interferometry. Implications for parallel Optical Coherence Tomography will be briefly discussed.
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