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Double-gated in-vivo small animal cone-beam micro-CT scans provide five-dimensional information about the object: the three volume dimensions plus the temporal dimensions of the respiratory motion and the heart motion, respectively. Double gating is typically performed to separate respiratory from cardiac motion when imaging the animal's lung or heart.
Recently we have completed a system level modelling of the G-protein coupled cascade in Drosophila photoreceptors that converts single photons into transient electrical responses. Many interesting properties were revealed including the underlying mechanisms by which the system generates high quantum efficiency, single photon responses, huge signal amplification and fast recovery, as well as light...
We report a simple scheme to generate time-bin entangled photon pairs based on cascaded second-order nonlinear processes in a single periodically-poled lithium niobate waveguide. We successfully observed two-photon interference fringes up to 97% visibilities.
We present a novel multiscale image representation belonging to the class of multiscale multiplicative decompositions, which we term Poisson-Haar transform. The proposed representation is well-suited for analyzing images degraded by signal-dependent Poisson noise, allowing efficient estimation of their underlying intensity by means of multiscale Bayesian schemes. The Poisson-Haar decomposition has...
In this work, we emphasize the importance of properly designing a bandwidth-resource-efficient entanglement distribution system. In particular, we point out that inappropriate setting of wavelength demultiplexing channel bandwidth with respect to pump spectral width could affect entanglement quality. It is widely known that the photon coherence length can be made longer than pump pulsewidth by narrowband...
We investigate the limits on detection speed for single-photon detectors based on photoconductive gain. We outline how to apply this approach to a quantum dot, optically gated, field-effect transistor photodetector.
We present a theoretical analysis of the statistical fluctuations in the coherent spontaneous harmonic radiation (CSHR) generated by a free electron laser (FEL) under the conditions applicable in a previously published experiment [1] where sub-Poisson optical fluctuations were observed. The numerical analyses presented here document the conclusion that the emission of CSHR can serve as a useful test...
Photon tracing and density estimation are well established techniques in global illumination computation and rendering of high-quality animation sequences. Using traditional density estimation techniques it is difficult to remove stochastic noise inherent for photon-based methods while avoiding overblurring lighting details. In this paper we investigate the use of bilateral filtering for lighting...
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