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Quantifying Nonstabilizerness of Quantum Codes by Removing the Inert Background
Yuan Liu, Ke-Mi Xu
Nonstabilizerness (magic) is the quantum resource that, together with stabilizer operations, makes universal quantum computation possible. It appears in fault-tolerant codes and to…
Approximate Virtual Quantum Recovery
Yuan Liu, Linhan Lin, Ke-Mi Xu
The recovery of quantum information after subsystem loss is a central challenge in quantum information processing. However, some states remain beyond the reach of any recovery stra…
Quantifying Nonstabilizerness of Codeword-Stabilized Codes
Yuan Liu, Ke-Mi Xu
Fault-tolerant quantum computation requires non-Clifford gates, which stabilizer codes cannot supply transversally. Non-stabilizer codes are the natural place to look for them, yet…
Precision Interferometry with Collectively Enhanced Atomic Mirror
Yuan Liu, Ke-Mi Xu, Hong-Bo Sun +1
Quantum metrology exploits quantum resources to enhance measurement precision beyond the classical limit. Conventional protocols normally rely on the preparation of delicate quantu…
Unconditional quantum teleportational advantage of single photons
Li-Chao Peng, Dian Wu, Xue-Mei Gu +10
Photon loss is the biggest enemy in quantum communications. Direct transmission typically results in a small fraction of photons surviving over long distances, hindering advanced a…
Boosted fusion gates above the percolation threshold for scalable graph-state generation
Yong-Peng Guo, Geng-Yan Zou, Xing Ding +15
Fusing small resource states into a larger, fully connected graph-state is essential for scalable photonic quantum computing. Theoretical analysis reveals that this can only be ach…