From the 1 of 6 linked papers with an AI index.
6 papers
Sudden death of entanglement, rebirth of magic
Chenfeng Cao
The paper studies how local Markovian noise can destroy entanglement irreversibly while allowing quantum "magic" to disappear and later reappear in GHZ states under amplitude dampi…
Learning Unified Control of Intrinsic Nonlinear Spin Dynamics in Atomic Qudits for Magnetometry
C. Z. Cao, J. Z. Han, M. Xiong +4
Generating and preserving metrologically useful quantum states is a central challenge in quantum-enhanced metrology. In low-field atomic magnetometry with multilevel atoms, the non…
Tangent Space Excitation Ansatz for Quantum Circuits
Ji-Yao Chen, Bochen Huang, D. L. Zhou +3
Computing excitation spectra of quantum many-body systems is a promising avenue to demonstrate the practical utility of current noisy quantum devices, especially as we move toward…
Measurement-induced non-commutativity in adaptive fermionic linear optics
Chenfeng Cao, Yifan Tang, Jens Eisert
Fermionic linear optics (FLO) with Gaussian resources is efficiently classically simulable. We show that this is no longer the case for such quantum circuits for fermions with inte…
Measurement-driven quantum advantages in shallow circuits
Chenfeng Cao, Jens Eisert
Quantum advantage schemes probe the boundary between classically simulatable and classically intractable quantum dynamics. We explore the impact of mid-circuit measurements on the…
Unveiling quantum phase transitions from traps in variational quantum algorithms
Chenfeng Cao, Filippo Maria Gambetta, Ashley Montanaro +1
Understanding quantum phase transitions in physical systems is fundamental to characterize their behavior at low temperatures. Achieving this requires both accessing good approxima…