scholarly journals Differential Study of Projectile Coherence Effects on Double Capture Processes in p + Ar Collisions

Atoms ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 10
Author(s):  
Trevor Voss ◽  
Basu Lamichhane ◽  
Madhav Dhital ◽  
Ramaz Lomsadze ◽  
Michael Schulz
Keyword(s):  
Coherence Effects ◽  
Coherence Lengths

We have measured differential yields for double capture and double capture accompanied by ionization in 75 keV p + Ar collisions. Data were taken for two different transverse projectile coherence lengths. A small effect of the projectile coherence properties on the yields were found for double capture, but not for double capture plus ionization. The results suggest that multiple projectile–target interactions can lead to a significant weakening of projectile coherence effects.

Polariton Devices

2017 ◽  
Author(s):  
Alexey V. Kavokin ◽  
Jeremy J. Baumberg ◽  
Guillaume Malpuech ◽  
Fabrice P. Laussy
Keyword(s):  
Semiconductor Devices ◽  
Logic Gates ◽  
Light Sources ◽  
Coherent Light ◽  
Final State ◽  
Spintronic Devices ◽  
Exciton Polaritons ◽  
Terahertz Lasers ◽  
Coherence Lengths ◽  
Stimulation Of

Polariton devices offer multiple advantages compared to conventional semiconductor devices. The bosonic nature of exciton polaritons offers opportunity of realisation of polariton lasers: coherent light sources based on bosonic condensates of polaritons. The final state stimulation of any transition feeding a polariton condensate has been used in many proposals such as for terahertz lasers based on polariton lasers. Furthermore, large coherence lengths of exciton-polaritons in microcavities open the way to realisation of polariton transport devices including transistors and logic gates. Being bosonic spin carriers, exciton-polaritons may be used in spintronic devices and polarisation switches. This chapter offers an overview on the existing proposals for polariton devices.

scholarly journals Coherence Effects in Multiple Medium-Induced Radiation

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 11
Author(s):  
Fabio Dominguez ◽  
Jose Guilherme Milhano ◽  
Carlos A. Salgado ◽  
Konrad Tywoniuk ◽  
Victor Vila
Keyword(s):  
Time Scales ◽  
Survival Probability ◽  
Jet Quenching ◽  
Close Correspondence ◽  
Gluon Emission ◽  
Classical Description ◽  
Theoretical Support ◽  
Coherence Effects ◽  
Hard Gluon

In the first part of this work we study the color coherence phenomenon by considering the well-known quark-antiquark antenna with an in-medium hard gluon emission and an extra very soft emission outside it—double antenna. By discussing the coherence effects in terms of the survival probability, we generalize previous studies of the antenna radiation to the case of more than two emitters. After providing support to the jet quenching picture with effective emitters in the QCD cascade, we present a novel setup of an antenna splitting inside the medium taking into account the finite formation time of the dipole, which turns out to be an important scale. We read into the role of coherence and the relevant time scales which control the scenario, while also providing theoretical support for vacuum-like emissions early in the medium. Finally, by mapping the spectrum of in-medium splittings through the corresponding kinematical Lund diagram, we appreciate regimes of a close correspondence to a semi-classical description.

Atomic coherence effects within the sodium D1manifold. II. Coherent optical pumping

1994 ◽  
Vol 6 (4) ◽  
pp. 245-260 ◽  
Author(s):  
D E Nikonov ◽  
U W Rathe ◽  
M O Scully ◽  
Shi-Yao Zhu ◽  
E S Fry ◽  
...  
Keyword(s):  
Optical Pumping ◽  
Atomic Coherence ◽  
Coherence Effects

Scintillation and multiwavelength coherence effects in a long-path laser absorption spectrometer

1978 ◽  
Vol 17 (2) ◽  
pp. 277 ◽  
Author(s):  
A. G. Kjelaas ◽  
P. E. Nordal ◽  
A. Bjerkestrand
Keyword(s):  
Laser Absorption ◽  
Coherence Effects ◽  
Absorption Spectrometer
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