From the 1 of 8 linked papers with an AI index.
8 papers
Diffusive Speed Limits for U(1)-Covariant Quantum Error Correction
Jianqi Sheng
Fast preparation of quantum error-correcting codes is essential for scalable quantum memories, but geometric locality and charge conservation impose an unavoidable transport…
Task-Dependent Syndrome Memory in Quantum Sensing and State Recovery
Jianqi Sheng
Preserving metrological information under noise is central to quantum sensing, yet finite detectors and memories impose an unavoidable limit on how finely noise trajectories can be…
When Quantum States over Spacetime Have No Common Process
Jianqi Sheng
The paper studies when quantum observations taken at different points in spacetime can be explained by a single underlying quantum process, providing exact criteria and examples th…
Protecting Astronomical Interferometry through Quantum-Memory Scrambling
Jianqi Sheng
Preserving the complex visibility of coherently captured starlight is essential for quantum-assisted long-baseline interferometry, because this nonlocal coherence carries the spati…
Connecting Quantum Contextuality and Nonlocality
Jianqi Sheng, Dongkai Zhang, Lixiang Chen
Quantum theory departs from classical physics in its treatment of correlations, most prominently through the phenomena of contextuality and nonlocality. Once regarded primarily as…
Experimental Test of Quantum Nonlocality from Contextuality
Jianqi Sheng, Dongkai Zhang, Lixiang Chen
There are two powerful arguments against the possibility of extending quantum mechanics, the violation of Bell inequalities and the Kochen-Specker theorem, but the connection betwe…