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Explore a 29-minute conference talk from the 19th Theory of Quantum Computation, Communication and Cryptography Conference (TQC 2024) that investigates quantum communication through bosonic loss-dephasing channels. Delve into groundbreaking research that challenges existing conjectures about quantum optical systems affected by photon loss and dephasing noise. Learn how researchers disproved the hypothesis that bosonic loss-dephasing channels are anti-degradable only when loss exceeds 50%, demonstrating instead that anti-degradability occurs above critical dephasing values regardless of loss levels. Discover how two-way classical communication enables quantum communication and quantum key distribution, even under high loss and dephasing conditions. Presented at OIST (Okinawa Institute for Science and Technology) as part of a premier international conference bringing together theoretical quantum information science experts to advance the field.
