TY - JOUR
T1 - Fast coherent splitting of Bose-Einstein condensates
AU - Kuriatnikov, Yevhenii
AU - Würkner, Nikolaus
AU - Kumaran, Karthikeyan
AU - Zhang, Tiantian
AU - Ramana, M. Venkat
AU - Kugi, Andreas
AU - Schmiedmayer, Jörg
AU - Deutschmann-Olek, Andreas
AU - Prüfer, Maximilian
PY - 2025/10/27
Y1 - 2025/10/27
N2 - Preparation of nontrivial quantum states without introducing unwanted excitations or decoherence remains a central challenge in utilizing ultracold atomic systems for quantum simulation. We employ optimal control methods to realize fast, coherent splitting of a one-dimensional Bose-Einstein condensate, achieving negligible classical excitations while preserving quantum correlations. Furthermore, we explore two-step protocols in which controlled classical motion is first induced and subsequently suppressed via tailored control sequences. Our experiments highlight the potential of optimal control for quantum state engineering and dynamical control in many-body quantum systems.
AB - Preparation of nontrivial quantum states without introducing unwanted excitations or decoherence remains a central challenge in utilizing ultracold atomic systems for quantum simulation. We employ optimal control methods to realize fast, coherent splitting of a one-dimensional Bose-Einstein condensate, achieving negligible classical excitations while preserving quantum correlations. Furthermore, we explore two-step protocols in which controlled classical motion is first induced and subsequently suppressed via tailored control sequences. Our experiments highlight the potential of optimal control for quantum state engineering and dynamical control in many-body quantum systems.
U2 - 10.1103/pjqv-r3p6
DO - 10.1103/pjqv-r3p6
M3 - Article
SN - 2643-1564
VL - 7
JO - Physical Review Research
JF - Physical Review Research
M1 - 043108
ER -