Qiongyi He
4 papers in the PaperMetrix corpus
Papers by this author
-
Quantum steering and its applications in quantum information
2022
The concept of quantum steering was originally introduced by Schrödinger to describe the "spooky action-at-a-distance" effect noted in the Einstein-Podolsky-Rosen (EPR) paradox, whereby local measurements performed on one party apparently adjust (steer) the state of …
-
Generating optical cat states via quantum interference of multi-path free-electron–photons interactions
2023 · 中国科学通报：英文版
The novel quantum effects induced by the free-electron-photons interaction have attracted increasing interest due to their potential applications in ultrafast quantum information processing. Here, we propose a scheme to generate optical cat states based on …
-
Assisted metrology and preparation of macroscopic superpositions with split spin-squeezed states
2023 · arXiv (Cornell University)
We analyse the conditional states in which one part of a split spin-squeezed state is left, upon performing a collective spin measurement on the other part. For appropriate measurement directions and outcomes, we see the …
-
Noncommutativity as a Universal Characterization for Enhanced Quantum Metrology
2025 · Physical Review Letters
A central challenge in quantum metrology is to effectively harness quantum resources to surpass classical precision bounds. Although recent studies suggest that the indefinite causal order may enable sensitivities to attain the super-Heisenberg scaling, the …