BEGIN:VCALENDAR
VERSION:2.0
PRODID:OpenCms 20.0.18
BEGIN:VTIMEZONE
TZID:Europe/Berlin
X-LIC-LOCATION:Europe/Berlin
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:19700329T020000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701025T030000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
END:STANDARD
END:VTIMEZONE				
BEGIN:VEVENT
DTSTAMP:20250627T125344
UID:fe9822c3-5344-11f0-a0cd-000e0c3db68b
SUMMARY:Designing Quantum Sensors via Randomness 
DESCRIPTION:Sensors, from voltmeters to magnetometers and gyroscopes, play a crucial role in science and technologies. A metric of performance for sensors is the so-called Signal to Noise Ratio (SNR). A sensor is deemed “quantum” if this SNR is larger than \sqrt{N}, where N are the number of participating quantum subsystems. This limit of SNR=\sqrt{N} is called the shot noise limit. Design of such quantum sensors usually requires very complicated unitary operations to prepare good initial states and also involve complicated measurements. It would be much more preferable to design quantum sensors wherein one picks unitary operators more or less “randomly” and beat this aforementioned shot noise limit. We show that there are choices that produce such quantum sensors that are (a) chosen without fine tuning, (b) “easy” to prepare and (c) easy to measure. We furthermore comment on multi-parameter metrology in this context. Joint work with Yeshma Ibrahim, Norman Koo and Dr. Sooryansh Asthana.
DTSTART:20250710T131500
DTEND:20250627T130500
LOCATION:Universität Stuttgart, <h style="color:red;">Raum 4.141</h> (NWZ II), Pfaffenwaldring 57, Stuttgart-Vaihingen , , , , 
URL;VALUE=URI:https://www.itp1.uni-stuttgart.de/de/institut/aktuelles/veranstaltungen/Designing-Quantum-Sensors-via-Randomness/
END:VEVENT
END:VCALENDAR