{"id":544819,"date":"2023-01-27T22:46:23","date_gmt":"2023-01-27T19:46:23","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/first-observation-of-de-broglie-mackinnon-wave-packets-achieved-by-exploiting-loophole-in-1980s-theorem\/"},"modified":"2023-01-27T22:46:23","modified_gmt":"2023-01-27T19:46:23","slug":"first-observation-of-de-broglie-mackinnon-wave-packets-achieved-by-exploiting-loophole-in-1980s-theorem","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/first-observation-of-de-broglie-mackinnon-wave-packets-achieved-by-exploiting-loophole-in-1980s-theorem\/","title":{"rendered":"#First observation of de Broglie-Mackinnon wave packets achieved by exploiting loophole in 1980s theorem"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a40847e0af20\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a40847e0af20\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/first-observation-of-de-broglie-mackinnon-wave-packets-achieved-by-exploiting-loophole-in-1980s-theorem\/#%E2%80%9CFirst_observation_of_de_Broglie-Mackinnon_wave_packets_achieved_by_exploiting_loophole_in_1980s_theorem%E2%80%9D\" >&#8220;First observation of de Broglie-Mackinnon wave packets achieved by exploiting loophole in 1980s theorem&#8221;<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/buradabiliyorum.com\/en\/first-observation-of-de-broglie-mackinnon-wave-packets-achieved-by-exploiting-loophole-in-1980s-theorem\/#You_accomplished_several_%E2%80%98firsts_during_this_phase_of_your_research_Will_you_provide_some_history_of_the_theoretical_ideas_that_brought_you_here\" >You accomplished several &#8216;firsts&#8217; during this phase of your research. Will you provide some history of the theoretical ideas that brought you here?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/buradabiliyorum.com\/en\/first-observation-of-de-broglie-mackinnon-wave-packets-achieved-by-exploiting-loophole-in-1980s-theorem\/#What_is_unique_about_your_results\" >What is unique about your results?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/buradabiliyorum.com\/en\/first-observation-of-de-broglie-mackinnon-wave-packets-achieved-by-exploiting-loophole-in-1980s-theorem\/#The_US_Office_of_Naval_Research_is_supporting_your_research_How_are_your_findings_useful_to_them_and_others\" >The U.S. Office of Naval Research is supporting your research. How are your findings useful to them and others?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/buradabiliyorum.com\/en\/first-observation-of-de-broglie-mackinnon-wave-packets-achieved-by-exploiting-loophole-in-1980s-theorem\/#What_are_the_next_steps\" >What are the next steps?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CFirst_observation_of_de_Broglie-Mackinnon_wave_packets_achieved_by_exploiting_loophole_in_1980s_theorem%E2%80%9D\"><\/span>&#8220;First observation of de Broglie-Mackinnon wave packets achieved by exploiting loophole in 1980s theorem&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2023\/researchers-achieve-th.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2023\/researchers-achieve-th.jpg\" data-sub-html=\"UCF CREOL Graduate Research Assistant Layton Hall, '22MS (left) and Dr. Ayman Abouraddy. Credit: University of Central Florida\">\n<figure class=\"article-img\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2023\/researchers-achieve-th.jpg\" alt=\"Researchers achieve the first observation of de Broglie-Mackinnon wave packets by exploiting loophole in 1980's-era laser physic\" title=\"UCF CREOL Graduate Research Assistant Layton Hall, '22MS (left) and Dr. Ayman Abouraddy. Credit: University of Central Florida\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                UCF CREOL Graduate Research Assistant Layton Hall, &#8217;22MS (left) and Dr. Ayman Abouraddy. Credit: University of Central Florida<br \/>\n            <\/figcaption><\/figure>\n<\/div>\n<\/div>\n<p>University of Central Florida College of Optics and Photonics researchers achieved the first observation of de Broglie-Mackinnon wave packets by exploiting a loophole in a 1980s-era laser physics theorem.<\/p>\n<section class=\"article-banner first-banner ads-336x280\"><!-- \/4988204\/Phys_Story_InText_Box --><br \/>\n      <\/section>\n<p>The research paper by CREOL and Florida Photonics Center of Excellence professor Ayman Abouraddy and research assistant Layton Hall has been published in the  journal <i>Nature Physics<\/i>.<\/p>\n<p>Observation of optical de Broglie\u2013Mackinnon wave packets highlights the team&#8217;s research using a class of pulsed laser beams they call space-time wave packets.<\/p>\n<p>In an interview with Dr. Abouraddy, he provides more insight into his team&#8217;s research and what it may hold for the future.\n<\/p>\n<h2><span class=\"ez-toc-section\" id=\"You_accomplished_several_%E2%80%98firsts_during_this_phase_of_your_research_Will_you_provide_some_history_of_the_theoretical_ideas_that_brought_you_here\"><\/span>You accomplished several &#8216;firsts&#8217; during this phase of your research. Will you provide some history of the theoretical ideas that brought you here?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In the early days of the development of quantum mechanics almost 100 years ago, Louis de Broglie made the crucial conceptual breakthrough of identifying waves with particles, sometimes called wave-particle duality. However, a crucial dilemma was not resolved. Particles are spatially stable: their size does not change as they <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/trip-and-travel\/\" data-internallinksmanager029f6b8e52c=\"10\" title=\"Trip &amp; Travel\" target=\"_blank\" rel=\"noopener\">travel<\/a>, however waves do change, spreading in space and time. How can one construct a model out of the waves suggested by de Broglie that nevertheless correspond accurately to a particle?<\/p>\n<p>In the 1970s, L. Mackinnon proposed a solution by combining Einstein&#8217;s special theory of relativity with de Broglie&#8217;s waves to construct a stable &#8216;wave packet&#8217; that does not spread and can thus accompany a traveling particle. This proposal went unnoticed because there was no methodology for producing such a wave packet. In recent years, my group has been working on a new class of pulsed laser beams that we have called &#8216;space-time wave packets,&#8217; which travel rigidly in free space.<\/p>\n<p>In our recent research, Layton extended this behavior to propagation in dispersive <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/social-mediaa\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Social Media\" target=\"_blank\" rel=\"noopener\">media<\/a>, which normally stretch optical pulses\u2014except for space-time wave packets that resist this stretching. He recognized that the propagation of space-time wave packets in a medium endowed with a special kind of dispersion (so-called &#8216;anomalous&#8217; dispersion) corresponds to Mackinnon&#8217;s proposal. In other words, space-time wave packets hold the key to finally achieving de Broglie&#8217;s dream. By carrying out laser experiments along these lines, we observed for the first time what we have called de Broglie-Mackinnon wave packets and verified their predicted properties.\n<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_unique_about_your_results\"><\/span>What is unique about your results?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>There are several unique aspects of this paper. This is the first example of a pulse propagating invariantly in a medium with anomalous dispersion. In fact, a well-known theorem in laser physics from the 1980&#8217;s purports to prove that such a feat is impossible. We found a loophole in that theorem that we exploited in designing our optical fields.<\/p>\n<p>Also, all previous pulsed fields that propagate without change have been X-shaped. It has long been theorized that O-shaped propagation-invariant wave packets should exist, but they have never been observed. Our results reveal the first observed O-shaped propagation-invariant wave packets.\n<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_US_Office_of_Naval_Research_is_supporting_your_research_How_are_your_findings_useful_to_them_and_others\"><\/span>The U.S. Office of Naval Research is supporting your research. How are your findings useful to them and others?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>We don&#8217;t know yet exactly. However, these findings have practical consequences in terms of the propagation of optical pulses in dispersive media without suffering the deleterious impact of dispersion.<\/p>\n<p>These results may pave the way to optical tests of the solutions of the Klein-Gordon equation for massive particles, and may even lead to the synthesis of non-dispersive wave packets using matter waves. This would also enable new sensing and microscope techniques.\n<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_are_the_next_steps\"><\/span>What are the next steps?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>This work is a part of a larger study of the propagation characteristics of space-time wave packets. This includes long-distance propagation of space-time wave packets that we are testing at UCF&#8217;s Townes Institute <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a> and <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">Technology<\/a> Experimentation Facility (TISTEF) on Florida&#8217;s space coast. From a fundamental perspective, the optical spectrum that we have used in our experiments lies on a closed trajectory. This has never been achieved before, and it opens the path to studying topological structures of light on closed surfaces.<\/p>\n<div class=\"article-main__more p-4\">\n<p><strong>More information:<\/strong><br \/>\n                                                Layton A. Hall et al, Observation of optical de Broglie\u2013Mackinnon wave packets, <i>Nature Physics<\/i> (2023).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1038\/s41567-022-01876-6\">DOI: 10.1038\/s41567-022-01876-6<\/a><\/p><\/div>\n<div class=\"d-inline-block text-medium mt-4\">\n<p>                                                    Provided by<br \/>\n                                                                                                            University of Central Florida<br \/>\n                                                                                                                <a rel=\"nofollow noopener\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/www.ucf.edu\/\"><br \/>\n                                                            <svg><use href=\"https:\/\/phys.b-cdn.net\/tmpl\/v6\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/><\/svg><\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                <strong>Citation<\/strong>:<br \/>\n                                                First observation of de Broglie-Mackinnon wave packets achieved by exploiting loophole in 1980s theorem (2023, January 27)<br \/>\n                                                retrieved 28 January 2023<br \/>\n                                                from https:\/\/phys.org\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2023-01-de-broglie-mackinnon-packets-exploiting-loophole.html<\/p>\n<p>                                             This document is subject to copyright. 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Credit: University of Central Florida University of Central Florida College of Optics and Photonics researchers achieved the first observation of de Broglie-Mackinnon wave packets by exploiting a loophole&#8230;<\/p>\n","protected":false},"author":1,"featured_media":544820,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/2023\/researchers-achieve-th.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-544819","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/544819","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=544819"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/544819\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/544820"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=544819"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=544819"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=544819"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}