Results 231 to 240 of about 68,671 (265)

Quantum transport of photons in disordered non-Hermitian photonic lattices

Frontiers in Optics 2014, 2014
We studied quantum correlation and transport of photons in disordered passive parity-time-symmetric lattices, and found that the off-diagonal disorder enhances while the diagonal disorder weakens the loss enhanced transmission effect of photons.
Lei Xu, Yiling Dou, Fang Bo, Jingjun Xu, Guoquan Zhang   +4 more
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Unbiased photon gathering for light transport simulation

ACM Transactions on Graphics, 2015
Photon mapping (PM) has been widely regarded as an efficient solution for light transport simulation, including challenging caustics paths and many-bounce indirect lighting. The efficiency of PM comes from reusing traced photons. However, the handling of photon gathering in existing PM algorithms is universally biased -- the expected value of their ...
Hao Qin, Xin Sun 0014, Qiming Hou, Baining Guo, Kun Zhou 0001   +4 more
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Photonics Beyond Information Transport?

Photonics in Switching, 1995
Photonics has rapidly become the dominant technology for the transmission of information in the national and global infrastructure, including undersea, terrestrial long-haul, CATV and local telephone access applications. Expanding this success deeper into the network, we are challenged by new requirements such as conforming to the new ATM (asynchronous
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A simple model of photon transport

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1995
Abstract In this paper I describe a simple model of photon transport. This simple model includes: tabulated cross sections and average expected energy losses for all elements between hydrogen (Z = 1) and fermium (Z = 100) over the enrgy range 10 eV to 1 GeV, simple models to analytically describe coherent and incoherent scattering, and a simple model
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Practicle and photon transport in plasmas

IRE Transactions on Antennas and Propagation, 1962
This paper presents a unified development of kinetic equations describing particle and photon transport in plasmas. The development proceeds deductively from a conventional quantum field theoretic formulation of electrodynamics, albeit via many approximations-many of which are largely untested.
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Photon Gated Transport at the Glass Nanopore Electrode

Journal of the American Chemical Society, 2006
The interior surface of the glass nanopore electrode was modified with spiropyran moieties to impart photochemical control of molecular transport through the pore orifice (15-90 nm radius). In low ionic strength acetonitrile solutions, diffusion of a positively charged species (Fe(bpy)(3)(2+)) is electrostatically blocked with approximately 100 ...
Gangli, Wang, Andrew K, Bohaty, Ilya, Zharov, Henry S, White   +3 more
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PHOTON TRANSPORT PROBLEMS INVOLVING A POINT SOURCE

Analysis and Applications, 2007
We consider both a direct and an inverse problem of photon transport in an interstellar cloud with a point photon source. By using a non-rigorous (but physically reasonable) procedure, we prove that the direct problem has a unique solution and that the inverse problem also has a unique solution, under the assumptions that a single value of the photon ...
Belleni-Morante, A., Lamb, W., McBride, A.C.   +2 more
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Photon transport and the critical problem

Physica B+C, 1975
Abstract The equivalence of radiative transfer and neutron transport is demonstrated for amplifying media with positive scattering albedo. When this is greater than one, a threshold condition for self-generation can be obtained from an existing solution of the corresponding critical problem.
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The photon picture of radiation transport

American Journal of Physics, 2010
The photon picture of radiation transport is examined. Because the photon has no mass and spin one, a position operator for a photon particle cannot be defined properly. This lack leads to ambiguity if the radiative transfer equation is associated with a quantum transport equation for photons.
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Monte Carlo Transport of Electrons and Photons

1988
This book is a report on a conference held in September, 1987, to discuss the simulation of electron and photon transport by Monte Carlo techniques. The book brings together in one place a large collection of information on this subject, which is normally spread over a large area of applications.
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