1.5k citations · 2.9k across the 34 of their papers we have counts for
5 papers · 1 filter
Scattering of relativistic electrons and analogies with optical phenomena: A study of longitudinal and transverse shifts at step potentials
Yue Ban, Xi Chen
We investigate the behavior of relativistic electrons encountering a potential step through analogies with optical phenomena. By accounting for the conservation of Dirac current, w…
Robust quantum control by smooth quasi-square pulses
Jing-jun Zhu, Xavier Laforgue, Xi Chen +1
Robust time-optimal control is known to feature constant (square) pulses. We analyze fast adiabatic dynamics that preserve robustness by using alternative smooth quasi-square pulse…
Optimizing Counterdiabaticity by Variational Quantum Circuits
Dan Sun, Pranav Chandarana, Zi-Hua Xin +1
Utilizing counterdiabatic (CD) driving - aiming at suppression of diabatic transition - in digitized adiabatic evolution have garnered immense interest in quantum protocols and alg…
Fast population transfer engineering of three-level systems
Xi Chen, J. G. Muga
We design, by invariant-based inverse engineering, resonant laser pulses to perform fast population transfers in three-level systems. The efficiency and laser intensities are exami…
Fast atomic transport without vibrational heating
E. Torrontegui, S. Ibáñez, Xi Chen +3
We use the dynamical invariants associated with the Hamiltonian of an atom in a one dimensional moving trap to inverse engineer the trap motion and perform fast atomic transport wi…