BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/Vienna
BEGIN:DAYLIGHT
DTSTART:20190331T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20191027T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260403T220425Z
UID:5cde7dc203aba656777211@ist.ac.at
DTSTART:20190528T140000
DTEND:20190528T150000
DESCRIPTION:Speaker: Daniel Szombati\nhosted by Johannes Fink\nAbstract: Qu
 antum mechanics postulates that a measurement forces the wavefunction of a
  qubit to collapse to one of its two eigenstates. The result of the measur
 ement can then be recorded as a discrete outcome designating the particula
 r eigenstate the qubit collapsed to. I will show that this well-accustomed
  picture of quantum measurement breaks down when the qubit is strongly dri
 ven during measurement. More specifically\, when the evolution speed excee
 ds a threshold defined by the characteristic measurement time\, the outcom
 e does not contain any information about the initial state of the qubit\, 
 and thus the measurement does not generate any back-action. We call this p
 henomenon quantum rifling (in analogy with the way a bullet is made to spi
 n before it leaves the barrel of a gun)\, as the fast spinning of the Bloc
 h vector protects it from collapsing into either of its two eigenstates. W
 e study this phenomenon with two superconducting qubits coupled to one and
  the same detector and demonstrate that quantum rifling allows us to measu
 re either one of the qubits on demand while protecting the state of the ot
 her one from the measurement back-action.
LOCATION:Mondi Seminar Room 2\, Central Building\, ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Daniel Szombati: Quantum Rifling: Revisiting the Stern-Gerlach expe
 riment with a twist
URL:https://talks-calendar.ista.ac.at/events/1989
END:VEVENT
END:VCALENDAR