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Wisconsin Quantum Institute

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Events on Tuesday, January 25th, 2022

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Time: 11:00 am
Place: virtual, see abstract for details
Speaker: Luis Sanchez-Soto, Complutense University of Madrid
Abstract: To watch online go to the IQUIST youtube channel:
For Zoom link you may check the IQUIST calendar weekly email or contact Kelly Foster (foster5@illinois.edu), or Hannah Stites (hstites2@illinois.edu). To subscribe to our weekly email for event announcements, please go to
Host: IQUIST
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Achieving the Ultimate Timing Resolution
Time: 11:00 am
Place:
Speaker: Luis Sanchez-Soto, Complutense University of Madrid
Abstract: Measuring small separations between two optical sources, either in space or in time, constitutes an important metrological challenge. Standard intensity detection fails for vanishing separations, as quantified by the time-honored Rayleigh's criterion. Recently, it has been established that appropriate mode projections can appraise arbitrarily small separations with quantum-limited precision. This has been demonstrated in the lab, both in the spatial and the temporal domain. However, the question of whether the optical coherence brings any metrological advantage to mode projections is still a point of debate. Here, I will discuss this problem and show new experiments puting forwards the effect of varying coherence on estimating the temporal separation between two single-photon pulses.
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