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quant-ph2026
Semidefinite-programming hierarchies for classically simulable state sets
Mengyan Li, Yanning Jia, Fenzhuo Guo +3
Determining whether a quantum state set admits a classical explanation is a fundamental problem in quantum information theory, as it reveals whether the information encoded in stat…
quant-ph2026
Geometric Construction of Optimal Teleportation Witnesses
Yanning Jia, Fenzhuo Guo, Mengxuan Bai +3
Not all entangled states are useful for quantum teleportation. We present a geometric method to construct optimal teleportation witnesses, which provide operational necessary and s…
quant-ph2026
Semi-device-independent certification of high-dimensional quantum channels
Mengyan Li, Yanning Jia, Fenzhuo Guo +3
Certifying high-dimensional quantum channels is essential for ensuring the reliability of quantum communication protocols. Existing certification schemes often rely on fully truste…