scholarly journals First observation of quasi–monochromatic optical Cherenkov radiation in a dispersive medium (quartz)

2021 ◽  
pp. 127680
Author(s):  
A. Potylitsyn ◽  
G. Kube ◽  
A. Novokshonov ◽  
A. Vukolov ◽  
S. Gogolev ◽  
...  
Keyword(s):  
Cherenkov Radiation ◽  
Dispersive Medium

scholarly journals Vavilov–Cherenkov radiation in dispersive medium

1999 ◽  
Vol 269 (1) ◽  
pp. 95-113 ◽  
Author(s):  
G.N. Afanasiev ◽  
V.G. Kartavenko ◽  
E.N. Magar
Keyword(s):  
Cherenkov Radiation ◽  
Dispersive Medium

Nonlinear Cherenkov Radiation in an Anomalous Dispersive Medium

2012 ◽  
Vol 108 (22) ◽  
Author(s):  
Huaijin Ren ◽  
Xuewei Deng ◽  
Yuanlin Zheng ◽  
Ning An ◽  
Xianfeng Chen
Keyword(s):  
Cherenkov Radiation ◽  
Dispersive Medium

scholarly journals Phase-space studies of backscattering diffraction of defective Schrödinger cat states

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Damian Kołaczek ◽  
Bartłomiej J. Spisak ◽  
Maciej Wołoszyn
Keyword(s):  
Phase Space ◽  
Dispersive Medium ◽  
Wigner Distribution ◽  
Interference Term ◽  
Wigner Distribution Function ◽  
The Subject ◽  
Schrödinger Cat ◽  
Cat States ◽  
Schrodinger Cat State ◽  
Space Approach

AbstractThe coherent superposition of two well separated Gaussian wavepackets, with defects caused by their imperfect preparation, is considered within the phase-space approach based on the Wigner distribution function. This generic state is called the defective Schrödinger cat state due to this imperfection which significantly modifies the interference term. Propagation of this state in the phase space is described by the Moyal equation which is solved for the case of a dispersive medium with a Gaussian barrier in the above-barrier reflection regime. Formally, this regime constitutes conditions for backscattering diffraction phenomena. Dynamical quantumness and the degree of localization in the phase space of the considered state as a function of its imperfection are the subject of the performed analysis. The obtained results allow concluding that backscattering communication based on the defective Schrödinger cat states appears to be feasible with existing experimental capabilities.

Oliver Heaviside: an accidental time traveller

2018 ◽  
Vol 376 (2134) ◽  
pp. 20170448
Author(s):  
Paul J. Nahin
Keyword(s):  
Cherenkov Radiation ◽  
Charged Particles ◽  
Electromagnetic Theory ◽  
Time Travel ◽  
Characteristic Radiation ◽  
Theme Issue ◽  
The Past ◽  
Faster Than Light

A little discussed aspect of Heaviside's work in electromagnetics concerned faster-than-light (FTL) charged particles, precursors to the hypothetical tachyon and his discovery that such motion should produce a characteristic radiation signature (now called Cherenkov radiation ). When Heaviside wrote, the time travel implications of FTL were not known (Einstein was still a teenager), and in this paper some speculations are offered on what Heaviside would have thought of FTL time travel, and of the associated (now classic) time travel paradoxes, including the possibility (or not) of sending information into the past. This article is part of the theme issue ‘Celebrating 125 years of Oliver Heaviside's ‘Electromagnetic Theory’’.

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