BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Penn Engineering Events - ECPv6.15.18//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Penn Engineering Events
X-ORIGINAL-URL:https://seasevents.nmsdev7.com
X-WR-CALDESC:Events for Penn Engineering Events
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/New_York
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20220313T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20221106T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20230312T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20231105T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20240310T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20241103T060000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20230221T123000
DTEND;TZID=America/New_York:20230221T133000
DTSTAMP:20260404T200438
CREATED:20230213T133421Z
LAST-MODIFIED:20230213T133421Z
UID:8452-1676982600-1676986200@seasevents.nmsdev7.com
SUMMARY:ESE Spring Seminar - "In pursuit of entanglement: XXZ interactions for spin-squeezing in atomic and solid-state spin ensembles"
DESCRIPTION:Controlling many-body entanglement promises to yield both fundamental insights and practical advances. In particular\, generating squeezed states for entanglement-enhanced metrology is an important near-term application of quantum systems. In past work\, squeezing has been achieved in a clean\, controlled setting using all-to-all Ising interactions between ultracold atoms in an optical cavity. By contrast\, optically-addressable spin defects in solids\, such as the nitrogen-vacancy center in diamond\, are far more practical and versatile sensors\, but it is not known whether the requisite ingredients for generating and detecting squeezing are attainable in this platform. \nIn this talk\, I will discuss two complementary approaches for generating squeezed states using XXZ interactions. The first approach centers around a cavity QED platform designed to realize programmable\, nonlocal spin-spin couplings. Specifically\, we implement an all-to-all XXZ Hamiltonian with tunable anisotropy\, strength\, and sign. Images of the resulting magnetization dynamics show that XXZ interactions protect spin coherence against spatial inhomogeneities\, which may enhance the robustness of future spin-squeezing protocols. \nThe robustness of the XXZ model against disorder opens the door to squeezing via long-range dipolar interactions within an ensemble of spin defects in diamond\, for which we identify and achieve the key required ingredients: (i) a theory that elucidates if and how power-law XXZ interactions generate squeezing; (ii) a two-dimensional ensemble of strongly-interacting\, optically-polarizable spins; (iii) methods for detecting squeezing despite significant technical noise.
URL:https://seasevents.nmsdev7.com/event/ese-spring-seminar-in-pursuit-of-entanglement-xxz-interactions-for-spin-squeezing-in-atomic-and-solid-state-spin-ensembles/
LOCATION:Raisler Lounge (Room 225)\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Electrical and Systems Engineering":MAILTO:eseevents@seas.upenn.edu
END:VEVENT
END:VCALENDAR