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<p class="MsoNormal"><a name="_Hlk152055189"><b><span lang="EN-US" style="font-size:24.0pt;line-height:105%;color:black">SmallTalk
</span></b></a><span style="mso-bookmark:_Hlk152055189"><b><span lang="EN-US" style="font-size:14.0pt;line-height:105%;color:black">[about Nanoscience]</span></b></span><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="color:black"><o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk152055189"><b><span lang="EN-US" style="color:black">On Monday </span></b></span><span style="mso-bookmark:_Hlk152055189"><b><span lang="EN-US">January 22th
</span></b></span><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="color:black">at 15.00h</span></span><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US">
<span style="color:black">we welcome you all to our SmallTalks seminar series. You are welcome to join us in lecture hall <b>Kollektorn, MC2 with fika</b> or on zoom.<o:p></o:p></span></span></span></p>
<h1><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="font-size:11.0pt;color:black;font-weight:normal">Our speaker is Ludovico Tesser, Doctoral Student, Applied Quantum Physics, Microtechnology and Nanoscience. The seminar is titled “How much
noise is necessary in mesoscopic engines”</span></span><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="font-size:11.0pt;font-weight:normal"><o:p></o:p></span></span></h1>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk152055189"><b><span lang="EN-US" style="color:black">Abstract:<o:p></o:p></span></b></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="color:black">Noise plays an important role in the characterization of nanoscale systems because, due to their small size, fluctuations are often comparable with average
quantities.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="color:black">In this talk, I will discuss some general properties of noise in coherent mesoscopic conductors. These properties can be formulated as inequalities, setting
bounds on the noise. For example, when the device is working as an engine, they result in inequalities between the noise and useful output, e.g. output power.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="color:black">First, I will discuss the main differences between conventional, macroscopic engines and mesoscopic ones. The key distinctions lie in the presence of non-negligible
fluctuations and quantum mechanical features. In classical systems, fluctuations play a crucial role in determining the maximum output power in nanoscale engines. This is quantified by the recently developed thermodynamic uncertainty relations [1], which set
a constraint on the precision of the engine. However, these uncertainty relations hold no longer in the presence of quantum coherence. Nonetheless, we establish a novel relation between the average charge current flowing in a mesoscopic conductor where quantum
coherence is present and its noise [1]. This result sets a minimum amount of noise required to produce power, which complements the thermodynamic uncertainty relation.
<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="color:black">The seminar is divided into two parts, where the first part consists of a pure overview of the field and is held on a generally accessible level (10<span class="apple-converted-space"> </span>min).
The second part will be more technical (15-20 minutes).<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="color:black">Looking forward to seeing you live or on Zoom: </span></span><a href="https://chalmers.zoom.us/j/61929604403"><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US">https://chalmers.zoom.us/j/61929604403</span></span><span style="mso-bookmark:_Hlk152055189"></span></a><span style="mso-bookmark:_Hlk152055189">
</span><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="color:black"> <o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="color:black">Best regards, <o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk152055189"><span lang="EN-US" style="color:black">Angela, Nils, Christoph, and Janine</span></span><span lang="EN-US" style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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