Quntao Zhuang

Ultimate accuracy limit of quantum pulse-compression ranging

2021 · Quantum Information and Measurement VI 2021

We establish microwave-radar ranging's ultimate quantum limit, and show that quantum illumination (QI) ranging achieves this limit. Moreover, QI's ranging accuracy can be 10's of dB better than that of its best classical competitor.

Fulfilling entanglement's optimal advantage via converting correlation to coherence

2022 · arXiv (Cornell University)

Entanglement boosts performance limits in sensing and communication, and surprisingly the advantage over classical protocols can be even larger in presence of entanglement-breaking noise. However, to maximally fulfill such advantages requires an optimal measurement design, …

Energy-dependent barren plateau in bosonic variational quantum circuits

2023 · arXiv (Cornell University)

Bosonic continuous-variable Variational quantum circuits (VQCs) are crucial for information processing in cavity quantum electrodynamics and optical systems, widely applicable in quantum communication, sensing and error correction. The trainability of such VQCs is less understood, …

Entanglement-Based Quantum Information Technology

2023 · arXiv (Cornell University)

Entanglement is a quintessential quantum mechanical phenomenon with no classical equivalent. First discussed by Einstein, Podolsky, and Rosen and formally introduced by Schrödinger in 1935, entanglement has grown from a scientific debate to a radically …