Photon Propagation Through Dispersive Media

A novel finite-difference time-domain formulation for the modeling of general anisotropic dispersive media is introduced in this work. The method accounts for fully anisotropic electric or magnetic materials with all elements of the permittivity and permeability tensors being non-zero. In addition, each element shows an arbitrary frequency dispersion described by the complex-conjugate pole–residue pairs model. The efficiency of the technique is demonstrated in benchmark numerical examples involving electromagnetic wave propagation through magnetized plasma, nematic liquid crystals and ferrites.

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Noisy effects in interferometric quantum gravity tests

International Journal of Quantum Information ◽

10.1142/s0219749917400147 ◽

2017 ◽

Vol 15 (08) ◽

pp. 1740014 ◽

Cited By ~ 2

Author(s):

F. Benatti ◽

R. Floreanini ◽

S. Olivares ◽

E. Sindici

Keyword(s):

Quantum Gravity ◽

Weak Coupling ◽

Scale Effects ◽

External Environment ◽

Planck Scale ◽

Canonical Commutation Relations ◽

Commutation Relations ◽

Photon Propagation ◽

Gravity Theories ◽

Planck Scale Effects

Quantum-enhanced metrology is boosting interferometer sensitivities to extraordinary levels, up to the point where table-top experiments have been proposed to measure Planck-scale effects predicted by quantum gravity theories. In setups involving multiple photon interferometers, as those for measuring the so-called holographic fluctuations, entanglement provides substantial improvements in sensitivity. Entanglement is however a fragile resource and may be endangered by decoherence phenomena. We analyze how noisy effects arising either from the weak coupling to an external environment or from the modification of the canonical commutation relations in photon propagation may affect this entanglement-enhanced gain in sensitivity.

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On the Behaviour of the Large Polaron in Dispersive Media under an Applied Electric Field

physica status solidi (b) ◽

10.1002/pssb.2221530148 ◽

1989 ◽

Vol 153 (1) ◽

pp. K25-K29

Author(s):

V. V. Onoochin ◽

G. Yu. Yashin

Keyword(s):

Electric Field ◽

Applied Electric Field ◽

Dispersive Media ◽

Large Polaron

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Walk-off near optic axes of spatially dispersive media of fluorite symmetry: the case of conical points

Journal of Modern Optics ◽

10.1080/09500340601124726 ◽

2007 ◽

Vol 54 (8) ◽

pp. 1173-1185

Author(s):

L. Dettwiller†

Keyword(s):

Dispersive Media ◽

Conical Points ◽

Spatially Dispersive

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Wave Patterns in Dispersive Media

American Journal of Physics ◽

10.1119/1.1974109 ◽

1967 ◽

Vol 35 (5) ◽

pp. 409-411

Author(s):

J. Ernest Breeding

Keyword(s):

Dispersive Media ◽

Wave Patterns

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Stimulated electromagnetic shock radiation (SESR) in frequency-dispersive media

Canadian Journal of Physics ◽

10.1139/p77-190 ◽

1977 ◽

Vol 55 (17) ◽

pp. 1499-1509 ◽

Cited By ~ 5

Author(s):

S. Schneider ◽

R. Spitzer

Keyword(s):

Resonance Frequency ◽

Energy Levels ◽

Stimulated Emission ◽

Dispersive Media ◽

Electron Trajectory ◽

Frequency Change ◽

Electromagnetic Shock ◽

Frequency Changes ◽

Shock Frequency ◽

Shock Fronts

The interaction in a frequency-dispersive medium of a coherent electromagnetic wave with an electron moving faster than a critical (Mach) speed produces electromagnetic radiation with novel characteristics. Theory predicts emission of intense radiation in the form of shock fronts at specific angles from the electron trajectory. The shock fronts are correlated with specific frequencies shifted significantly from that of the incident wave. We have named this effect stimulated electromagnetic shock radiation (SESR). The shock frequencies depend dynamically on the populations of the energy levels that give rise to the medium resonances. A given shock frequency changes from below to above the resonance frequency of the medium with which it is associated as the populations of the two energy levels corresponding to this resonance frequency change from an equilibrium distribution to an inverted one. This dynamic resonance crossing points to the possibility of new synergisms between SESR emission and stimulated emission between discrete levels.

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