BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York BEGIN:DAYLIGHT DTSTART:20230312T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20231105T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20230506T145109Z UID:8D371BAF-BBFC-4472-9F47-1FEEF7EC7D9D DTSTART;TZID=America/New_York:20230502T100000 DTEND;TZID=America/New_York:20230502T113000 DESCRIPTION:In recent years\, photonics has become one of the key contender s in the race to build large-scale quantum computers. The prominence of ph otonics as a quantum information technology is underscored by the fact tha t it is one of only a handful of technology platforms which has achieved a quantum advantage\, i.e.\, a large-scale quantum system which outperforms a classical supercomputer at some well-defined computational task [1 2]. In this talk\, I will highlight several aspects of the research that my te am is doing in this field. I will focus on three aspects.\n\nFirst\, I wil l discuss some theoretical aspects of the recent quantum advantage demonst rations in photonics. A crucial matter in any quantum advantage demonstrat ion is how noise affects the degree of quantum interference. There is an a nalogy here to Bell tests\, with ever more sophisticated experiments leadi ng to more sophisticated theoretical objections\, and so on. The claims of [1] kicked off a lively debate regarding the way photon losses could be u sed to classically simulate the computational task for which a quantum adv antage was claimed. I will discuss the prospects of simulating these optic al systems using the theory that has been developed in the last years [3-5 ].\n\nSecond\, I will discuss the complex engineering task of building the large-scale\, tunable interferometers which are necessary to give these p roof-of-principle systems a degree of programmability. In collaboration wi th a University of Twente spinout company QuiX Quantum B.V.\, we have rece ntly demonstrated [6] the world’s largest quantum photonic processor\, i .e. fully tunable multimode optical interferometer\, using silicon nitride photonic waveguides.\n\nFinally\, I will focus on the quantum fundamental s work which is made possible by these technological advances. Large-scale photonic systems are an interesting novel testbed with which to explore t he fundamental concepts and problems of quantum mechanics. Specifically\, I will show how this platform can be used for quantum simulation of quantu m thermodynamics\, and I will show a novel entanglement witness for large- scale quantum states. This broad range of new science shows the promises a nd opportunities of this quantum technology platform.\n\n[1] Zhong et al\, Science 370\, 6523 (2020).\n[2] Zhong et al\, arXiv:2106.15534.\n[3] Rene ma et al\, arXiv:1809.01953.\n[4] Renema et al\, arXiv:2012.14917.\n[5] Re nema et al\, Phys. Rev. A 101\, 063840 (2020).\n[6] Taballione et al\, arX iv: 2203.01801 (2022).\n\nSpeaker(s): Dr Jelmer Renema \, \n\nRoom: MC603\ , Bldg: McConnell Engineering building\, 3480 University Street\, Montreal \, Quebec\, Canada\, H3A 0E9 LOCATION:Room: MC603\, Bldg: McConnell Engineering building\, 3480 Universi ty Street\, Montreal\, Quebec\, Canada\, H3A 0E9 ORGANIZER:matthew.t.posner@ieee.org SEQUENCE:4 SUMMARY:Integrated Photonic Quantum Information Processing URL;VALUE=URI:https://events.vtools.ieee.org/m/359545 X-ALT-DESC:Description: <br /><p style="font-weight: 400\;">In recent years \, photonics has become one of the key contenders in the race to build lar ge-scale quantum computers. The prominence of photonics as a quantum infor mation technology is underscored by the fact that it is one of only a hand ful of technology platforms which has achieved a quantum advantage\, i.e.\ , a large-scale quantum system which outperforms a classical supercomputer at some well-defined computational task [1 2]. In this talk\, I will high light several aspects of the research that my team is doing in this field. I will focus on three aspects.</p>\n<p style="font-weight: 400\;">First\, I will discuss some theoretical aspects of the recent quantum advantage d emonstrations in photonics. A crucial matter in any quantum advantage demo nstration is how noise affects the degree of quantum interference. There i s an analogy here to Bell tests\, with ever more sophisticated experiments leading to more sophisticated theoretical objections\, and so on. The cla ims of [1] kicked off a lively debate regarding the way photon losses coul d be used to classically simulate the computational task for which a quant um advantage was claimed. I will discuss the prospects of simulating these optical systems using the theory that has been developed in the last year s [3-5].</p>\n<p style="font-weight: 400\;">Second\, I will discuss the co mplex engineering task of building the large-scale\, tunable interferomete rs which are necessary to give these proof-of-principle systems a degree o f programmability. In collaboration with a University of Twente spinout co mpany QuiX Quantum B.V.\, we have recently demonstrated [6] the world&rsqu o\;s largest quantum photonic processor\, i.e. fully tunable multimode opt ical interferometer\, using silicon nitride photonic waveguides. &nbsp\;&n bsp\;</p>\n<p style="font-weight: 400\;">Finally\, I will focus on the qua ntum fundamentals work which is made possible by these technological advan ces. Large-scale photonic systems are an interesting novel testbed with wh ich to explore the fundamental concepts and problems of quantum mechanics. Specifically\, I will show how this platform can be used for quantum simu lation of quantum thermodynamics\, and I will show a novel entanglement wi tness for large-scale quantum states. This broad range of new science show s the promises and opportunities of this quantum technology platform.</p>\ n<p style="font-weight: 400\;">[1] Zhong&nbsp\;<em>et al</em>\, Science&nb sp\;<strong>370</strong>\, 6523 (2020).<br />[2] Zhong et al\, arXiv:2106. 15534.<br />[3] Renema&nbsp\;<em>et al</em>\, arXiv:1809.01953.<br />[4] R enema&nbsp\;<em>et al</em>\, arXiv:2012.14917.<br />[5] Renema et al\, Phy s. Rev. A&nbsp\;<strong>101</strong>\, 063840 (2020).<br />[6] Taballione& nbsp\;<em>et al</em>\, arXiv: 2203.01801 (2022).</p> END:VEVENT END:VCALENDAR