May 31, 2024 | Pascal Weckesser, Kritsana Srakaew, Tizian Blatz, David Wei, Daniel Adler, Suchita Agrawal, Annabelle Bohrdt, Immanuel Bloch, Johannes Zeiher
This study reports the realization of a Rydberg-dressed extended Bose-Hubbard model (eBHM) using Rydberg-dressed $ {}^{87}Rb $ atoms in an optical lattice. The experiment demonstrates the ability to control and observe many-body phenomena in itinerant quantum systems through long-range interactions. By using off-resonant optical coupling to Rydberg states, the researchers achieve extended-range interactions that enable the study of correlated dynamics and non-local order. The system is realized using a quantum gas microscope, allowing for precise control and measurement of single atoms. The study explores various regimes of the eBHM, including the dynamics of repulsively-bound pairs and the behavior of "hard rods" at half filling. The results show that Rydberg dressing provides a versatile method for engineering itinerant optical lattice-based quantum simulators. The experiment also demonstrates the emergence of density ordering near equilibrium, highlighting the potential of Rydberg-dressed systems for studying novel quantum many-body phenomena. The study addresses experimental challenges in realizing long-range interactions and shows that Rydberg dressing enables the observation of extended-range interactions with lifetimes sufficient for exploring many-body dynamics. The findings pave the way for future studies of light-controlled extended-range interacting quantum systems.This study reports the realization of a Rydberg-dressed extended Bose-Hubbard model (eBHM) using Rydberg-dressed $ {}^{87}Rb $ atoms in an optical lattice. The experiment demonstrates the ability to control and observe many-body phenomena in itinerant quantum systems through long-range interactions. By using off-resonant optical coupling to Rydberg states, the researchers achieve extended-range interactions that enable the study of correlated dynamics and non-local order. The system is realized using a quantum gas microscope, allowing for precise control and measurement of single atoms. The study explores various regimes of the eBHM, including the dynamics of repulsively-bound pairs and the behavior of "hard rods" at half filling. The results show that Rydberg dressing provides a versatile method for engineering itinerant optical lattice-based quantum simulators. The experiment also demonstrates the emergence of density ordering near equilibrium, highlighting the potential of Rydberg-dressed systems for studying novel quantum many-body phenomena. The study addresses experimental challenges in realizing long-range interactions and shows that Rydberg dressing enables the observation of extended-range interactions with lifetimes sufficient for exploring many-body dynamics. The findings pave the way for future studies of light-controlled extended-range interacting quantum systems.