BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Drupal iCal API//EN X-WR-CALNAME:Events items teaser X-WR-TIMEZONE:America/Toronto BEGIN:VTIMEZONE TZID:America/Toronto X-LIC-LOCATION:America/Toronto BEGIN:DAYLIGHT TZNAME:EDT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 DTSTART:20230312T070000 END:DAYLIGHT BEGIN:STANDARD TZNAME:EST TZOFFSETFROM:-0400 TZOFFSETTO:-0500 DTSTART:20221106T060000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:65696221ace65 DTSTART;TZID=America/Toronto:20230913T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Toronto:20230913T130000 SUMMARY:IQC Student Seminar Featuring Chung-You (Gilbert) Shih CLASS:PUBLIC DESCRIPTION:Summary \n\nPROGRAMMABLE INDIVIDUAL OPTICAL ADDRESSING FOR TRAP PED-ION QUANTUM\nINFORMATION PROCESSORS \n\nTrapped ions are among the mos t advanced platforms for quantum\ncomputation and simulation. Programmable \, arbitrary\, and precise\ncontrol—usually through laser-induced light- matter interaction—is\nrequired to tune ion-ion interactions. These inte ractions translate\ninto diverse parameters of the system under study. Cur rent\ntechnologies grapple with scalability issues in large ion chains and \nwith \"crosstalk\" due to micron-level inter-ion separation. \n\nIn this talk\, we present our development of two optical addressing\nsystems opti mized for non-coherent and coherent quantum controls\,\nrespectively. \n\n The first addressing system employs a reprogrammable hologram to\nmodulate the wavefront of the addressing beam\, thereby engineering the\namplitude and phase profile of light across the ion chain. Our\nimplementation comp ensates for optical aberrations in the system down\nto λ/20 RMS and exhib its less than 10−4 intensity cross-talk error.\nThis results in more tha n 99.9% fidelity when resetting the state or\n99.66% when reading out the state of an individual ion without\ninfluencing adjacent ions. This scheme can be readily extended to over\na hundred ions and adapted to other plat forms\, such as neutral atom\narrays. \n\nAdditionally\, we introduce anot her addressing design\, tailored for\ncoherent quantum operations through Raman transitions. This design\nuses a mirrored acoustic-optical deflector (AOD) setup to optimize\noptical power scaling and sidestep the undesired site-dependent\nfrequency shift commonly observed in AOD-based setups. \n \n \n\nADD EVENT TO CALENDAR\n\nApple [ 8579042+apple]  Google\n[ ]  Office 365\n[]  Ou tlook\n[]\n []  Yahoo\n[https://w]  \n DTSTAMP:20231201T043337Z END:VEVENT END:VCALENDAR