BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:R.-K. Lee DTSTART:20240911T060000Z DTEND:20240911T073000Z DTSTAMP:20260423T005840Z UID:QOART/50 DESCRIPTION:Title: M achine-learning enhanced quantum state tomography and its applications for optical cat states\nby R.-K. Lee as part of Quantum Optics and Relate d Topics\n\n\nAbstract\nWith this talk\, I will first illustrate the imple mentation of our machine-learning (ML) enhanced quantum state tomography ( QST) for continuous variables\, through the experimentally measured data g enerated from squeezed vacuum states [1]\, as an example of quantum machin e learning [2]. Our recent progress will be demonstrated in applying such a ML-QST on Wigner currents [3]\, single-photon Fock state [4]\, optical c at state [5]\, Bayesian estimation for gravitational wave detectors [6\, 7]\, and quantumness measure [8].\n\n[1] Hsien-Yi Hsieh\, et al.\, "Extrac t the Degradation Information in Squeezed States with Machine Learning\," Phys. Rev. Lett. 128\, 073604 (2022).\n\n[2] Alexey Melnikov\, Mohammad K ordzanganeh\, Alexander Alodjants\, and RKL\," Quantum Machine Learning: f rom physics to software engineering\," Adv. in Phys. X (Review Article) 8\ , 2165452 (2023).\n\n[3] Yi-Ru Chen\, et al.\, "Experimental reconstructio n of Wigner phase-space current\," Phys. Rev. A 108\, 023729 (2023).\n\n[4 ] Hsien-Yi Hsieh\, et al.\, "Neural network enhanced single-photon Fock st ate tomography\," revised to Phys. Rev. A (2024)\; [arXiv: 2405.02812].\n \n[5] Yi-Ru Chen\, et al.\, "Generation of heralded optical `Schroedinger cat' states by photon-addition\," Phys. Rev. A 110\, 023703 (2024).\n\n[6] Hsien-Yi Hsieh\, et al.\, in preparation for publication (2024).\n\n[7] Y uhang Zhao\, et al.\, "Frequency-dependent squeezed vacuum source for broa dband quantum noise reduction in advanced gravitational-wave detectors\," Phys. Rev. Lett. 124\, 171101 (2020)\; Editors' Suggestion\; Featured in Physics.\n\n[8] Ole Steuernagel and RKL\, "Quantumness Measure from Phase Space Distributions\," [arXiv: 2311.17399].\n LOCATION:https://researchseminars.org/talk/QOART/50/ END:VEVENT END:VCALENDAR