{"id":3264,"date":"2026-01-29T22:14:50","date_gmt":"2026-01-29T21:14:50","guid":{"rendered":"https:\/\/portale2.unime.it\/upon2026\/?page_id=3264"},"modified":"2026-03-12T19:24:26","modified_gmt":"2026-03-12T18:24:26","slug":"special_v01","status":"publish","type":"page","link":"https:\/\/portale2.unime.it\/upon2026\/special_v01\/","title":{"rendered":"Special Sessions"},"content":{"rendered":"\t\t
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UPON 2026 Special Sessions
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SS1
SS2
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SS1: Stochastic Thermodynamics<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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SS2: Noise in Gravitational-Wave Detectors: Sources, Mitigation, and Open Problems<\/span><\/span>
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SS3: Quantum Sensing\u200b<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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Please check below for details on each special session<\/span><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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SS1\n
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SS1: Stochastic Thermodynamics<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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SS1 Chair: L\u00e9opold Van Brandt (UCLouvain, Belgium)<\/strong><\/p>

\u00a0<\/p>

Stochastic thermodynamics aims to extend the laws of conventional thermodynamics to situations in which random fluctuations are non-negligible, both in and out of equilibrium. It is a relatively recent theory, born in the late 90\u2019. The theoretical framework is especially useful in describing nonlinear system operating out of (and possibly far from) equilibrium. Important examples include nanoscale electron devices (either in classical or quantum regime), but are not limited to these since many applications can be found in other fields like chemistry or biology. From first principles (notably the local detailed balance consequent to the microscopic reversibility), one can derive fundamental relations (for instance, uncertainty relations) on the dissipation, statistical moments of fluctuations (e.g. white noise in nonlinear devices) and of entropy production (associated to any type of \u201cflow\u201d in response to a \u201cforce\u201d in a physical and possibly complex system); some of them are reported to have predictive virtues.
As part of UPoN 2026, this special session on stochastic thermodynamics calls for contributions (with or without publication in the conference proceeding) showing application of the theory to physical systems that are intrinsically noisy.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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SS2\n
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SS2: Noise in Gravitational-Wave Detectors: Sources, Mitigation, and Open Problems<\/span><\/span>
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SS2 Chair: Vincenzo Dattilo (EGO, European Gravitational Observatory )<\/strong><\/p>

\u00a0<\/strong><\/p>

Gravitational-wave detectors represent some of the most sensitive measurement devices ever built, operating at the boundary between the physical limits imposed by fundamental noise and practical noise sources arising from complex instruments embedded in real\u00a0 environments. At these extreme levels of sensitivity, noise is not merely a technical limitation but an intrinsic aspect of the measurement process, shaping both detector performance and experimental strategies.<\/p>

This special session focuses on the characterization, modeling, and mitigation of noise, which remains a central and open challenge in gravitational-wave science.\u00a0 Understanding and mitigating noise is essential for improving detector sensitivity and stability, as well as for identifying realistic paths toward performance gains.<\/p>

Contributions are solicited on topics including, but not limited to: fundamental noise mechanisms such as quantum noise in optical readout systems, thermal noise in optical components, coatings, mechanical structures, control-related, and suspension systems, as well as seismic and Newtonian noise. We also welcome studies of environmental and instrumental disturbances, including acoustic, magnetic, and anthropogenic noise, and investigations of how these effects couple into the detector output and limit achievable sensitivity.<\/p>

The session aims to encourage discussion on fundamental limits imposed by noise, including trade-offs between different noise sources and the constraints they place on detector design and operation. Improving performance in one frequency band often leads to the emergence of previously subdominant noise contributions in another, highlighting the need for a global and physically grounded understanding of the detector noise budget.<\/p>

By emphasizing unresolved questions at the interface between fundamental noise limits, instrumental design, control strategies, and environmental conditions, this special session highlights noise as a central challenge in gravitational-wave detection and as a key driver for future advances. The session is intended to provide a focused forum for exchanging ideas, discussing open problems, and fostering cross-disciplinary dialogue, in full alignment with the goals and spirit of UPON 2026.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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SS3\n
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SS3: Quantum Sensing<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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SS3 Chair: Nicole Fabbri (LENS – European Laboratory for Non-Linear Spectroscopy<\/b>)<\/strong><\/p>\n


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Quantum sensing has emerged as one of the most rapidly advancing areas of quantum technologies, enabling the detection of extremely weak signals with sensitivities approaching fundamental physical limits. By exploiting quantum coherence and quantum correlations, a new generation of sensors is being developed for precision measurements in physics, chemistry, biology, medicine, and beyond. However, the performance of these devices is intrinsically linked to the presence of noise and fluctuations, which ultimately determine their sensitivity, stability, and operational limits.<\/p>\n

Understanding the role of noise is crucial both for identifying the fundamental limits of quantum measurements and for designing strategies to mitigate or exploit fluctuations in realistic sensing environments.<\/p>\n

The session will highlight recent advances in quantum sensing platforms, including solid-state spin systems, atomic magnetometers, cold-atom sensors, superconducting circuits, and quantum photonic devices. Contributions will cover a broad range of quantum sensing approaches, including magnetometry, spectroscopy, imaging, interferometry, and related measurement techniques. A key focus will be the investigation of noise sources affecting quantum sensors, including decoherence processes, environmental fluctuations, technical noise, and noise arising from the measured system itself.<\/p>\n

In addition to noise suppression techniques, the session will also consider concepts where noise plays a constructive role, such as noise spectroscopy, stochastic resonance, noise-assisted signal detection. These approaches open new opportunities to extract information from complex systems where fluctuations carry valuable physical insights.<\/p>\n

By focusing on the interplay between quantum sensing and noise, this Special Session aims to stimulate discussion on unresolved questions, emerging experimental platforms, and theoretical frameworks that will shape the next generation of quantum sensing technologies.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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