BEGIN:VCALENDAR
PRODID:-//planitpurple.northwestern.edu//iCalendar Event//EN
VERSION:2.0
CALSCALE:GREGORIAN
METHOD:PUBLISH
CLASS:PUBLIC
BEGIN:VTIMEZONE
TZID:America/Chicago
TZURL:http://tzurl.org/zoneinfo-outlook/America/Chicago
X-LIC-LOCATION:America/Chicago
BEGIN:DAYLIGHT
TZOFFSETFROM:-0600
TZOFFSETTO:-0500
TZNAME:CDT
DTSTART:19700308T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0500
TZOFFSETTO:-0600
TZNAME:CST
DTSTART:19701101T020000
RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
SEQUENCE:0
DTSTART;TZID=America/Chicago:20261007T133000
DTEND;TZID=America/Chicago:20261007T143000
DTSTAMP:20261002T001104Z
SUMMARY:Quantum Information Seminar: Sahel Ashhab: "The Unusual Physics and Math of Generalized Squeezing"
UID:647025@northwestern.edu
TZID:America/Chicago
DESCRIPTION:Quantum computing technologies\, such as superconducting circuit-QED systems\, have allowed the exploration of novel physical phenomena. These include strongly nonlinear light-matter interactions. In this context\, we analyze the properties and dynamics of generalized squeezed vacuum states\, i.e. states obtained by applying a high-order squeezing operator to the vacuum state. Our numerical simulations suggest that\, in stark contrast to displacement and two-photon squeezing\, higher-order squeezing leads to oscillatory dynamics. The state is squeezed in the initial stages of the dynamics but the squeezing reverses at later stages\, and the state reverts almost completely back to the initial state. Further investigation reveals that the simulation results depend strongly on whether the state space in the simulation contains an even or odd number of states. This result indicates that the infinite-size limit is not well defined\, and it raises questions regarding whether the simulation results are physically meaningful. We show that the squeezing Hamiltonian must be complemented with additional regulating terms to make the results truncation-size independent and physically meaningful.  Sahel Ashhab\, Senior Researcher\, National Institute of Communication Technology\, Japan  Host: Ian Low   
LOCATION:Technological Institute\, F160\, 2145 Sheridan Road\, Evanston\, IL 60208
TRANSP:OPAQUE
URL:https://planitpurple.northwestern.edu/event/647025
CREATED:20260501T050000Z
STATUS:CONFIRMED
LAST-MODIFIED:20260929T201335Z
PRIORITY:0
BEGIN:VALARM
TRIGGER:-PT10M
ACTION:DISPLAY
DESCRIPTION:Reminder
END:VALARM
END:VEVENT
END:VCALENDAR