BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York BEGIN:DAYLIGHT DTSTART:20210314T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20211107T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20210910T144806Z UID:DA8D5FEB-7CD3-4516-BB6E-11C7E5232F6F DTSTART;TZID=America/New_York:20210909T190000 DTEND;TZID=America/New_York:20210909T201500 DESCRIPTION:In recent years\, non-Hermitian degeneracies\, also known as ex ceptional points (EPs)\, have emerged as a new paradigm for engineering th e response of optical systems. At such points\, an N-dimensional system ca n be represented by a single eigenmode. As a result\, these points are ass ociated with abrupt phase transitions in parameter space. Among many diffe rent non-conservative photonic configurations\, parity-time (PT) symmetric systems are of particular interest since they provide a powerful platform for systematically exploring the physics and consequently utilizing the e xceptional points. In this talk\, I will review some of our recent works i n the area of non-Hermitian active photonics. For example\, in a series of papers\, we have demonstrated how the generation and judicial incorporati on of these points in laser systems can result in unexpected dynamics\, un usual linewidth behavior\, and improved modal response. On the other hand\ , biasing a photonic system at an exceptional point can lead to orders of magnitude enhancement in sensitivity- an effect that can enable a new gene ration of ultrasensitive optical sensors on-chip. Non-Hermiticity can also be used as a means to promote an edge mode in photonic topological insula tor lattices. Our most recent result on using non-Hermiticity to engineer interaction dynamics in optical lattices will be presented along with its applications in designing a new class of fully reconfigurable lasers as we ll as implementing novel topological models.\n\nSpeaker(s): Prof. Mercedeh Khajavikhan\, \n\nVirtual: https://events.vtools.ieee.org/m/281338 LOCATION:Virtual: https://events.vtools.ieee.org/m/281338 ORGANIZER:keisukekojima@ieee.org SEQUENCE:3 SUMMARY:Opportunities in Non-Hermitian and Topological Photonics: Optics at an Exceptional Point URL;VALUE=URI:https://events.vtools.ieee.org/m/281338 X-ALT-DESC:Description: <br /><p>In recent years\, non-Hermitian degeneraci es\, also known as exceptional points (EPs)\, have emerged as a new paradi gm for engineering the response of optical systems. At such points\, an N- dimensional system can be represented by a single eigenmode. As a result\, these points are associated with abrupt phase transitions in parameter sp ace. Among many different non-conservative photonic configurations\, parit y-time (PT) symmetric systems are of particular interest since they provid e a powerful platform for systematically exploring the physics and consequ ently utilizing the exceptional points. In this talk\, I will review some of our recent works in the area of non-Hermitian active photonics. For exa mple\, in a series of papers\, we have demonstrated how the generation and judicial incorporation of these points in laser systems can result in une xpected dynamics\, unusual linewidth behavior\, and improved modal respons e. On the other hand\, biasing a photonic system at an exceptional point c an lead to orders of magnitude enhancement in sensitivity- an effect that can enable a new generation of ultrasensitive optical sensors on-chip. Non -Hermiticity can also be used as a means to promote an edge mode in photon ic topological insulator lattices. Our most recent result on using non-Her miticity to engineer interaction dynamics in optical lattices will be pres ented along with its applications in designing a new class of fully reconf igurable lasers as well as implementing novel topological models.</p> END:VEVENT END:VCALENDAR