Toggle switch from optical bistability to multistability via an elliptically polarized field

2017 ◽  
Vol 31 (17) ◽  
pp. 1750191 ◽  
Author(s):  
Xiang-An Yan ◽  
Bo-Quan Ren ◽  
Li-Qiang Wang ◽  
Yao-Wu Liu ◽  
Hua-Wa Yu
Keyword(s):  
Quantum Interference ◽  
Optical Bistability ◽  
Atomic System ◽  
Hysteresis Cycle ◽  
Toggle Switch ◽  
Left Handed ◽  
Cycle Shape ◽  
Optimal Intensity ◽  
The Right ◽  
Elliptically Polarized

In this paper, we propose a scheme for manipulating the behavior of optical bistability (OB) and optical multistability (OM) in an N-type four-level atomic system. In the scheme, quantum interference is optimized by the left-handed and the right-handed fields of an elliptically polarized field (EPF). The threshold and the hysteresis cycle shape of OB and OM can be controlled by modulating the intensity of the EPF. Especially, the transition from OB to OM or vice versa can also be easily realized by proper tuning the phase difference between the left-handed and right-handed polarized fields under the optimal intensity of the EPF.

THE EFFECT OF DECAY-INDUCED INTERFERENCE ON THE PHASE CONTROL OF THE OPTICAL BISTABILITY (OB)

2009 ◽  
Vol 18 (03) ◽  
pp. 529-539 ◽  
Author(s):  
M. SAHRAI ◽  
R. KHERADMAND ◽  
N. SALAHSHOUR ◽  
M. MAHMOUDI
Keyword(s):  
Quantum Interference ◽  
Optical Bistability ◽  
Relative Phase ◽  
Atomic System ◽  
Ring Cavity ◽  
Phase Control ◽  
Optical Multistability ◽  
Applied Fields ◽  
Optical Ring ◽  
Incoherent Pumping Field

This paper studies the optical bistability in a degenerate three-level Λ-type atomic system in a unidirectional optical ring cavity. The effect of quantum interference on the phase control of the optical bistabilty is then discussed. It is shown that the optical bistability changes with the intensity of coupling and the rate of an incoherent pumping field. The possibility of creating an optical multistability (OM) by the intensity of coupling field relative phase between the applied fields, and the rate of an incoherent pump field has also been discussed.

Controlling the optical bistability via quantum interference in a four-level N-type atomic system

2011 ◽  
Vol 131 (8) ◽  
pp. 1682-1686 ◽  
Author(s):  
M. Sahrai ◽  
S.H. Asadpour ◽  
H. Mahrami ◽  
R. Sadighi-Bonabi
Keyword(s):  
Quantum Interference ◽  
Optical Bistability ◽  
Atomic System

Определение ведущей руки в судебно-медицинской практике с помощью стоматологического индекса КПУ

2020 ◽  
pp. 46-48
Keyword(s):  
Dental Caries ◽  
Forensic Medicine ◽  
Left Handed ◽  
Forensic Practice ◽  
The World ◽  
Medical Identification ◽  
The Right

In current forensic medicine practice, the need for the development of new, scientifically based approaches and methods of forensic medical identification is still very important. The number of left-handed people in the world varies from 5 to 30 %, and it can be useful in forensic practice. The possibility of establishing a dominating hand based on the intensity of dental caries (CFE - CARIES-FILLIN-EXTRACTION index) was studied. Taking into consideration the intensity of caries damage to the teeth on the right and left sides of right-handed, left-handed and ambidextras people, we offered and calculated the CFE difference index: «CFE on the right – CFE on the left». Significant differences in the CFE indexes can help to determine what hand has been predominant and it might be useful for forensic specialists.

ANALYSIS OF THE COMPETITIVE ACTIVITIES OF THE WORLD STRONGEST BELT WRESTLERS

2020 ◽  
Vol 8 (1) ◽  
pp. 38-45
Author(s):  
Mariya Sedunova ◽  
Liliya Konovalova
Keyword(s):  
Female Athletes ◽  
Group Differences ◽  
Men And Women ◽  
World Championship ◽  
Left Handed ◽  
Competitive Activity ◽  
The World ◽  
The Right ◽  
Competitive Activities ◽  
Distinguishing Features

International potential and consequent greater competition in belt wrestling increase the significance of assessing quantitative and qualitative indicators of competitive activity of the strongest wrestlers in the world. It is important to identify the sport development trends and to search for effective ways and tools for achievement of the sport excellence. Purpose: to reveal the features of efficient competitive activities of the world leading wrestlers on the basis of analysis of group differences in technical and tactical excellence indicators. Materials and methods of research. We analyzed videos of 285 events with participation of 197 wrestlers competing at the Belt Wrestling World Championship 2019 in Kazan. We registered the following indicators of competitive activity: the total and average number of fighting techniques, including techniques executed to the right and to the left side within 4 minutes of combat; number and types of technical actions of competition winners among men and women. Research results and discussion. The paper focuses on the comparative analysis of technical and tactical skills of men and women, the winners of the Belt Wrestling World Championship. The research revealed distinguishing features of the winner’s technical toolkit including the diversity of technical and tactical actions, a balance in the knowledge of the right and left-handed techniques. At the same time, the analysis of technical and tactical actions in women wrestling shows the backlog of female athletes in these components of technical fitness.

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