BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Asia/Hong_Kong BEGIN:STANDARD DTSTART:19791021T023000 TZOFFSETFROM:+0900 TZOFFSETTO:+0800 TZNAME:HKT END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20220819T061751Z UID:5AB803A8-0E47-495A-A9DA-BE616455D70C DTSTART;TZID=Asia/Hong_Kong:20220818T103000 DTEND;TZID=Asia/Hong_Kong:20220818T114500 DESCRIPTION:Seminar\n\nQuantum Electromagnetics: An Introduction and Two Ga me-Changing Computational Electromagnetics Algorithms\n\nProf. Weng Cho Ch ew\n\nDistinguished Professor\n\nElmore Family School of Electrical and Co mputer Engineering\n\nPurdue University\, West Lafayette\, Indiana 47907\, USA\n\nDate : 18 August 2022 (Thursday)\nTime : 10:30 am – 11:45 am\nOn site (with limited seats) is for the participants in City University of Ho ng Kong (CityU)\nOnline (Zoom) is for the participants outside CityU\nVenu e : Room 6-212\, 6/F\, Lau Ming Wai Academic Building\, CityU\n\nRegistrat ion link: https://events.vtools.ieee.org/event/register/321343\n\nQuantum technology is becoming increasing important in the modern world. They are transformative in computing\, sensing\, communication\, encryption etc. Ma ny quantum technologies are mediated by photons\, which is related to quan tum Maxwell’s equations or quantum electromagnetics. However\, understan ding quantum electromagnetics requires a paradigm shift in thinking. We wi ll introduce quantum nature of electromagnetic fields in the simplest way possible so that classical electromagneticists can capture the main ideas behind it. We will then use quantum communication as an illustrative examp le of this new technology.\n\nNext\, we will introduce two CEM algorithms. First\, we will introduce a differential equation solver with the use of differential geometry or discrete exterior calculus to develop a computati onal electromagnetics algorithm. This algorithm is broadband valid from DC to optics\, auguring wide applications in electromagnetics simulations.\n \nSecond\, we will introduce an integral equation solver\, which are in ge neral harder to implement. Approximately\, a scatterer is broken into many small pieces. The solver simultaneously accounts for the interactions amo ng these smaller scatterers using Green’s function. Green’s function a ccounts for long-range interactions\, implying N^2 interactions for N scat terers. By using fast multipole algorithm\, such interactions can be reduc ed to N or N log N. But an algorithm valid from DC to optics has eluded re searchers for two decades. Recently\, we have developed a hybrid algorithm with uniformly small error valid from DC to optics. By iterations\, a con vergent solution can then be rapidly obtained.\n\nBldg: Lau Ming Wai Acade mic Building\, Room 6-212\, 6/F\, City University of Hong Kong\, Hong Kong \, Hong Kong\, Hong Kong\, Virtual: https://events.vtools.ieee.org/m/32134 3 LOCATION:Bldg: Lau Ming Wai Academic Building\, Room 6-212\, 6/F\, City Uni versity of Hong Kong\, Hong Kong\, Hong Kong\, Hong Kong\, Virtual: https: //events.vtools.ieee.org/m/321343 ORGANIZER:hang.wong@cityu.edu.hk SEQUENCE:8 SUMMARY:Seminar:Quantum Electromagnetics: An Introduction and Two Game-Chan ging Computational Electromagnetics Algorithms URL;VALUE=URI:https://events.vtools.ieee.org/m/321343 X-ALT-DESC:Description: <br /><p><strong><span style="color: #34495e\; font -size: 18pt\;">Seminar</span></strong></p>\n<p><span style="font-size: 18p t\; color: #3598db\;"><strong>Quantum Electromagnetics: An Introduction&nb sp\;</strong></span><span style="font-size: 18pt\; color: #3598db\;"><stro ng>and </strong><strong>Two Game-Changing Computational Electromagnetics A lgorithms&nbsp\;</strong></span></p>\n<p><strong>Prof. Weng Cho Chew</stro ng></p>\n<p><strong>Distinguished Professor</strong></p>\n<p><strong>Elmor e Family School of Electrical and Computer Engineering</strong></p>\n<p><s trong>Purdue University\, West Lafayette\, Indiana 47907\, USA</strong></p >\n<p>Date &nbsp\; &nbsp\;: &nbsp\; &nbsp\;18 August 2022 (Thursday)<br /> Time &nbsp\; &nbsp\;: &nbsp\; &nbsp\;10:30 am &ndash\; 11:45 am<br />Onsit e (with limited seats) is for the participants in City University of Hong Kong (CityU)<br />Online (Zoom) is for the participants outside CityU<br / >Venue &nbsp\; &nbsp\;: &nbsp\; &nbsp\;Room 6-212\, 6/F\, Lau Ming Wai Aca demic Building\, CityU</p>\n<p>Registration link: https://events.vtools.ie ee.org/event/register/321343&nbsp\;</p>\n<p>Quantum technology is becoming increasing important in the modern world.&nbsp\; They are transformative in computing\, sensing\, communication\, encryption etc.&nbsp\; Many quant um technologies are mediated by photons\, which is related to quantum Maxw ell&rsquo\;s equations or quantum electromagnetics.&nbsp\;&nbsp\; However\ , understanding quantum electromagnetics requires a paradigm shift in thin king. We will introduce quantum nature of electromagnetic fields in the si mplest way possible so that classical electromagneticists can capture the main ideas behind it.&nbsp\; We will then use quantum communication as an illustrative example of this new technology.</p>\n<p>Next\, we will introd uce two CEM algorithms.&nbsp\; First\, we will introduce a differential eq uation solver with the use of differential geometry or discrete exterior c alculus to develop a computational electromagnetics algorithm.&nbsp\; This algorithm is broadband valid from DC to optics\, auguring wide applicatio ns in electromagnetics simulations.</p>\n<p>Second\, we will introduce an integral equation solver\, which are in general harder to implement.&nbsp\ ; Approximately\, a scatterer is broken into many small pieces.&nbsp\; The solver simultaneously accounts for the interactions among these smaller s catterers using Green&rsquo\;s function.&nbsp\; Green&rsquo\;s function ac counts for long-range interactions\, implying N^2 interactions for N scatt erers.&nbsp\;&nbsp\; By using fast multipole algorithm\, such interactions can be reduced to N or N log N.&nbsp\; But an algorithm valid from DC to optics has eluded researchers for two decades.&nbsp\;&nbsp\; Recently\, we have developed a hybrid algorithm with uniformly small error valid from D C to optics. By iterations\, a convergent solution can then be rapidly obt ained.</p> END:VEVENT END:VCALENDAR