BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//TYPO3/NONSGML News system (news)//EN
BEGIN:VEVENT
UID:news-33949@phys.au.dk
DTSTAMP:20210928T103015Z
DTSTART:20161213T091500Z
DTEND:20161213T100000Z
END:VEVENT
END:VCALENDAR




<div class="news news-single">
	<div class="article" itemscope="itemscope" itemtype="http://schema.org/Article">
		
	
			<script type="text/javascript">
				const showAllContentLangToken = "Vis alt indhold ";
			</script>

			
			

			<article class="typo3-delphinus delphinus-gutters">

				<!-- News PID: 83035 - used for finding folder/page which contains the news / event -->
				<!-- News UID: 33949 - the ID of the current news / event-->

				<div class="news-event">
					<div class="news-event__header">
						<!-- Categories -->
						
							<span class="text--stamp">
<!-- categories -->
<span class="news-list-category">
	
		
	
		
	
</span>

</span>
						

						<!-- Title -->
						<h1 itemprop="headline">Talk - Artur Widera: Dynamics of Single Neutral Atoms Coupled to Baths</h1>
						
					</div>

					

					<div class="news-event__content">

						<!-- Events info box -->
						
								

								<div class="news-event__info theme--dark" id="event-info">
									<h2 class="screenreader-only">Oplysninger om arrangementet</h2>

									
											<!--- Same date -->
											<div class="news-event__info__item news-event__info__item--time">
												<h3 class="news-event__info__item__header text--label-header">Tidspunkt</h3>
												<div class="news-event__info__item__content">
													<span class="u-avoid-wrap">
														Tirsdag 13. december 2016,
													</span>
													<span class="u-avoid-wrap">
														&nbsp;kl. 10:15 -  11:00
													</span>
													<p class="news-event__info__item__ical-link"><a href="/aktuelt/nyhed/artikel/talk-artur-widera-dynamics-of-single-neutral-atoms-coupled-to-baths?tx_news_pi1%5Bformat%5D=ical&amp;type=9819&amp;cHash=c4b0a2df6740e9b7d2bcaab59a5befd1">Tilføj til kalender</a></p>
												</div>
											</div>
										

									<!-- Location detailed -->
									
											<!-- Location Simple -->
											
												<div class="news-event__info__item">
													<h3 class="news-event__info__item__header text--label-header">Sted</h3>
													<div class="news-event__info__item__content">
														<p>1525-626</p>
													</div>
												</div>
											
										

									<!-- Organizer detailed -->
									
											<!-- Organizer Simple -->
											
										

									<!-- Price -->
									

									<!-- Event link -->
									

									<!-- Registration -->
									
								</div>
							

						
							<!-- Media -->
							
								



							
						

						
							<div class="news-event__content__text">
								<span class="text--byline" id="byline">
									

									<!-- Author -->
									
										<span itemprop="author" itemscope="itemscope" itemtype="http://schema.org/Person">
											
													Af
												

											
													<a href="mailto:lie@phys.au.dk">
														<span itemprop="name">Mette Alstrup Lie</span>
													</a>
												
										</span>
									
								</span>

								

									<!-- Body text -->
									<h2>Dynamics of Single Neutral Atoms Coupled to Baths</h2>
<h3> Artur Widera</h3>
<h2>&nbsp;</h2>
<p>Experimental advances in controlling and probing single neutral atoms has proven valuable to explore quantum phenomena with unprecedented resolution. We employ such control to investigate dynamics of single atoms in engineered baths to study fundamental statistical physics and diffusion dynamics on a single particle level. First, we observe nonergodic diffusion of single Cesium atoms trapped in a periodic potential and coupled to a near-resonant light field. Our findings may be relevant for the interpretation of various observations in, e.g., life science experiments. Second, we observe the diffusion of single Cesium "tracer" atoms impinging on an ultracold cloud of Rubidium. We observe the effect of individual collisions, which form the most fundamental building block of diffusion. In our case, the gas is dilute and the mass ratio of tracer and gas atoms is close to unity, revealing the discrete nature of the bath. However, we are able to model the dynamics over a broad range of densities with a continuous medium type Langevin equation, where friction and fluctuation terms become velocity dependent. We find excellent agreement without free parameters, extending the validity range of the highly successful continuous diffusion description into a new regime.</p>
								
							</div>
						
					</div>

					
						<!-- Content elements -->
						
					
				</div>
			</article>

			
				
				
			

			<!-- related things -->
			
		

	</div>
</div>