34 citations · 39 across the 5 of their papers we have counts for
6 papers · 1 filter
Displaced Fermionic Gaussian States and their Classical Simulation
Xingjian Lyu, Kaifeng Bu
This work explores displaced fermionic Gaussian operators with nonzero linear terms. We first demonstrate equivalence between several characterizations of displaced Gaussian states…
Extremality of stabilizer states
Kaifeng Bu
We investigate the extremality of stabilizer states to reveal their exceptional role in the space of all -qubit/qudit states. We establish uncertainty principles for the charact…
Magic Class and the Convolution Group
Kaifeng Bu, Arthur Jaffe, Zixia Wei
The classification of many-body quantum states plays a fundamental role in the study of quantum phases of matter. In this work, we propose an approach to classify quantum states by…
Resource Theory of Non-Revivals with Applications to Quantum Many-Body Scars
Roy J. Garcia, Kaifeng Bu, Liyuan Chen +1
The study of state revivals has a long history in dynamical systems. We introduce a resource theory to understand the use of state revivals in quantum physics, especially in quantu…
Resource Theory of Special Antiunitary Asymmetry
Kaifeng Bu, Heng Fan, Arun Kumar Pati +1
We propose the resource theory of a special antiunitary asymmetry in quantum theory. The notion of antiunitary asymmetry, in particular, -asymmetry is different from the…
Coherence breaking channels and coherence sudden death
Kaifeng Bu, Swati, Uttam Singh +1
Quantum noise is ubiquitous to quantum systems as they incessantly interact with their surroundings and results in degrading useful resources such as coherence for single quantum s…