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quant-ph2025
Time Independence Does Not Limit Information Flow. I. The Free-Particle Case
Dong Yuan, Chao Yin, T. C. Mooney +3
The speed of information propagation in long-range interacting quantum systems is limited by Lieb-Robinson-type bounds, whose tightness can be established by finding specific quant…
quant-ph2025
Time Independence Does Not Limit Information Flow. II. The Case with Ancillas
T. C. Mooney, Dong Yuan, Adam Ehrenberg +3
While the impact of locality restrictions on quantum dynamics and algorithmic complexity has been well studied in the general case of time-dependent Hamiltonians, the capabilities…
quant-ph2024
Generalized Spin Helix States as Quantum Many-Body Scars in Partially Integrable Models
He-Ran Wang, Dong Yuan
Quantum many-body scars are highly excited eigenstates of non-integrable Hamiltonians which violate the eigenstate thermalization hypothesis and are embedded in a sea of thermal ei…