Hong-Ou-Mandel Dip Measurements of Two Independent Weak Coherent Pulses for Free Space Quantum Key Distribution Systems

Shelan Khasro  Tawfeeq; Ahmed Ismael Khaleel; شيلان خسرو توفيق

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Publication Date

Fri Dec 31 2021

Journal Name

Iraqi Journal Of Laser

Volume

20

Issue Number

2

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Hong-Ou-Mandel Dip Measurements of Two Independent Weak Coherent Pulses for Free Space Quantum Key Distribution Systems

Two-photon interference

indistinguishable photons

MDI-QKD protocol

Shelan Khasro Tawfeeq

Ahmed Ismael Khaleel

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Preparation of identical independent photons is the core of many quantum applications such as entanglement swapping and entangling process. In this work, Hong-Ou-Mandel experiment was performed to evaluate the degree of indistinguishability between independent photons generated from two independent weak coherent sources working at 640 nm. The visibility was 46%, close to the theoretical limit of 50%. The implemented setup can be adopted in quantum key distribution experiments carried out with free space as the channel link, as all the devices and components used are operative in the visible range of the electromagnetic spectrum.

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Publication Date

Mon Sep 04 2023

Journal Name

2023 International Conference On Advanced Mechatronic Systems (icamechs)

Performance Analysis of Finite-Time Generalized Proportional Integral Observer for Uncertain Brunovsky Systems

Kamal

Raja Fawad

Zhenwei

Zhihong

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This paper proposes a novel finite-time generalized proportional integral observer (FTGPIO) based a sliding mode control (SMC) scheme for the tracking control problem of high order uncertain systems subject to fast time-varying disturbances. For this purpose, the construction of the controller consists of two consecutive steps. First, the novel FTGPIO is designed to observe unmeasurable plant dynamics states and disturbance with its higher time derivatives in finite time rather than infinite time as in the standard GPIO. In the FTGPO estimator, the finite time convergence rate of estimations is well achieved, whereas the convergence rate of estimations by classical GPIO is asymptotic and slow. Secondly, on the basis of the finite and fast e

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Publication Date

Fri May 18 2018

Journal Name

International Journal Of Simulation: Systems, Science & Technology

A Review of Advances in Pressurizer Response Research for Pressurized Water Reactor Systems

Nibal F.

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(1)

Publication Date

Tue Oct 02 2018

Journal Name

Iraqi Journal Of Physics

The efficiency calibration for local manufacturing gamma scanning systems of radioactive waste drums

Gamma scanning system

radioactive waste (RW)

nondestructive assay (NDA).

Saad Salih

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The Local manufacturing scanning gamma system designed in Tuwaitha site for nondestructive assay method of radioactive waste drums, where it consist of two main parts with their belongings for controlling the of detector and drum movements up-down and rotation respectively. The volume of the used drum is 220 L with 85 cm height. The drum filled with Portland cement. Six cylindrical holes were made within cement drum and distributed in radial arrangement.The152Eu source inserted in these holes individually, to measure the average angular count rate of gamma radiation. The full energy efficiency value for geometry of drum and detector is computed for thirteen photo peaks. The average efficiency represented by the curve of these peaks indic

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Publication Date

Thu Mar 01 2012

Journal Name

Journal Of Economics And Administrative Sciences

Using Truncated Test for Finding the Parameters of Single Sampling Plan under Distribution of Log-Logistic

سهيل نجم

بيداء

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A group of acceptance sampling to testing the products was designed when the life time of an item follows a log-logistics distribution. The minimum number of groups (k) required for a given group size and acceptance number is determined when various values of Consumer’s Risk and test termination time are specified. All the results about these sampling plan and probability of acceptance were explained with tables.

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Publication Date

Mon Dec 31 2018

Journal Name

Iraqi Journal Of Market Research And Consumer Protection

EFFECT OF ADDING TWO (Curcuma longa) LEVELS OF CURCUMA ON SOME PRODUCTIVE AND PHYSIOLOGICAL CHARACTERISTICS FOR QUAIL JAPANESE.: EFFECT OF ADDING TWO (Curcuma longa) LEVELS OF CURCUMA ON SOME PRODUCTIVE AND PHYSIOLOGICAL CHARACTERISTICS FOR QUAIL JAPANESE.

Curcuma

Quai birds

productive and physiological performance

عمار صلاح الدين

مخـلـد عريبي

سماح ميسر

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A study carried out in quail’s field owned by the Department of Animal production/ Collage of Agriculture / Tikrit University. For the period 14/ 5/ 2016 to 4/ 6/ 2016 in order to study the effect of adding Curcuma longa - to the diet of quails - on some productive and physiological characteristics of the Japanese quail birds bred for meat production. Using (48) quail birds which are two weeks old provided by Department of Agricultural Research. The birds were divided randomly after weighing them into three treatments; four replicate treatments for (4 bird/ replicate). The treatments as follows: (T1) control group (fed diet without any supplement), second (T2) and third (T3) groups were fed diet supplemental 4.5 and 9g Curcuma powder /

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Publication Date

Wed Jan 01 2020

Journal Name

Journal Of Southwest Jiaotong University

A Recognition System for Subjects' Signature Using the Spatial Distribution of Signature Body

Zainab J.

Loay E.

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This investigation proposed an identification system of offline signature by utilizing rotation compensation depending on the features that were saved in the database. The proposed system contains five principle stages, they are: (1) data acquisition, (2) signature data file loading, (3) signature preprocessing, (4) feature extraction, and (5) feature matching. The feature extraction includes determination of the center point coordinates, and the angle for rotation compensation (θ), implementation of rotation compensation, determination of discriminating features and statistical condition. During this work seven essential collections of features are utilized to acquire the characteristics: (i) density (D), (ii) average (A), (iii) s

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Publication Date

Sun Dec 03 2017

Journal Name

Baghdad Science Journal

Bayes and Non-Bayes Estimation Methods for the Parameter of Maxwell-Boltzmann Distribution

"Maxwell-Boltzmann distribution

Maximum Likelihood method

Moment method

Standard Bayes method

Standard Bayes by Jeffrey's prior method

Mean square error

Simulation technique."

Iden H.

Shayma G.

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In this paper, point estimation for parameter ? of Maxwell-Boltzmann distribution has been investigated by using simulation technique, to estimate the parameter by two sections methods; the first section includes Non-Bayesian estimation methods, such as (Maximum Likelihood estimator method, and Moment estimator method), while the second section includes standard Bayesian estimation method, using two different priors (Inverse Chi-Square and Jeffrey) such as (standard Bayes estimator, and Bayes estimator based on Jeffrey's prior). Comparisons among these methods were made by employing mean square error measure. Simulation technique for different sample sizes has been used to compare between these methods.

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Publication Date

Mon Dec 04 2017

Journal Name

Al-qadisiyah Journal For Administrative And Economic Sciences

Survival Function Estimating of Single age Groups for Generalized Gamma Distribution with Simulation.

Generalized Gamma distribution

Survival function

Simulation

Maximum Likelihood

Principle of the Maximizing function Entropy

Omar Abdulmohsin

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The analysis of survival and reliability considered of topics and methods of vital statistics at the present time because of their importance in the various demographical, medical, industrial and engineering fields. This research focused generate random data for samples from the probability distribution Generalized Gamma: GG, known as: "Inverse Transformation" Method: ITM, which includes the distribution cycle integration function incomplete Gamma integration making it more difficult classical estimation so will be the need to illustration to the method of numerical approximation and then appreciation of the function of survival function. It was estimated survival function by simulation the way "Monte Carlo". The Entropy method used for the

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Publication Date

Wed Jan 01 2014

Journal Name

American Journal Of Mathematics And Statistics

Preliminary Test Single Stage Shrinkage Estimator for the Scale Parameter of Gamma Distribution

Muna D.

Abbas Najim

Aseel Hussein

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Publication Date

Mon Jan 01 2024

Journal Name

Anais Da Academia Brasileira De Ciências

Morphological study for Accipitrid birds (Accipitridforms, Accipitridae) in Iraq; part two

A part two of Accipitridae Family members that belong to three genera: Circus

Gyps

and Neophron were documented as morphometrics

distribution ranges

and conservation status were reviewed and comprehensively discussed. A total of 29 voucher specimens belong to six species which are conserved in the “Iraq Natural History Research Center and Museum INHM” as follow: Marsh Harrier Circus aeruginosus (Linnaeus

1758)

Hen Harrier Circus cyaneus (Linnaeus

1766)

Montagus Harrier Circus pygargus (Linnaeus

1758)

Pallid Harrier Circus macrourus (Gmelin

1770)

Egyptian vulture Neophron percnopterus (Linnaeus

1758)

and Griffon vulture Gyps fulfus (Hablitz

1783). The results revealed significant criteria about near threatened NT species IUCN and Birdlife International listed as Pallid Harrier Circus macrourus

and Endangered (EN) species as Egyptian vulture Neophron percnopterus globally decreasing population trend.

HIND D.

KHALIDA I.

AFKAR M.

SUHAD Y.

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