BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Dolev Bluvstein (Harvard) DTSTART:20240416T203000Z DTEND:20240416T213000Z DTSTAMP:20260423T052450Z UID:MathPic/127 DESCRIPTION:Title: Logical quantum processor based on reconfigurable atom arrays\nby Do lev Bluvstein (Harvard) as part of Mathematical Picture Language Seminar\n \nLecture held in Jefferson 256 and Zoom https://harvard.zoom.us/j/7792833 57?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09.\n\nAbstract\nSuppressing errors i s one of the central challenges for useful quantum computing\, requiring q uantum error correction for large-scale processing. However\, the overhead in the realization of error-corrected “logical” qubits\, where inform ation is encoded across many physical qubits for redundancy\, poses signif icant challenges to large-scale logical quantum computing. In this talk we will discuss recent advances in quantum information processing using dyna mically reconfigurable arrays of neutral atoms. With this platform we have realized programmable quantum processing with encoded logical qubits\, co mbining the use of 280 physical qubits\, high two-qubit gate fidelities\, arbitrary connectivity\, and mid-circuit readout. Using this logical proce ssor with various types of error-correcting codes\, we demonstrate that we can improve logical two-qubit gates by increasing code size\, outperform physical qubit fidelities\, create logical GHZ states\, and perform comput ationally complex scrambling circuits using 48 logical qubits and hundreds of logical gates. We find that this logical encoding substantially improv es algorithmic performance with error detection\, outperforming physical q ubits at both benchmarking and quantum simulations. These results herald t he advent of early error-corrected quantum computation\, enabling new appl ications and inspiring a shift in both the challenges and opportunities th at lay ahead.\n\nPasscode: 657361\n LOCATION:https://researchseminars.org/talk/MathPic/127/ END:VEVENT END:VCALENDAR