We propose a Rydberg molecule dressing scheme to create strong and long-ranged interactions at selective distances. This is achieved through laser coupling ground-state atoms off-resonantly to an attractive molecular ...We propose a Rydberg molecule dressing scheme to create strong and long-ranged interactions at selective distances. This is achieved through laser coupling ground-state atoms off-resonantly to an attractive molecular curve of two interacting Rydberg atoms. Although dephasing due to Rydberg state decay occurs in all dressing schemes, an advantage of the molecule dressing is that a large ratio of dressed interaction to dephasing rate can be realized at large atomic separations. In an optical lattice or tweezer setting, we show that the strong interaction permits the fast generation of spin squeezing for several tens of dressed atoms.The proposed setting offers a new route to study complex many-body dynamics and to realize quantum information processing with non-convex long-range interactions.展开更多
基金support from the Baden-Württemberg Foundation(Grant No.BWST ISF2019-23)(“Internationale Spitzenforschung”)the Deutsche Forschungsgemeinschaft through SPP 1929 GiRyd(Grant No.428276754)+2 种基金support from the EPSRC(Grant Nos.EP/R04340X/1,and EP/W015641/1)the Royal Society through the International Exchanges Cost Share Award(Grant No.IEC181078)support from the National Natural Science Foundation of China(Grant Nos.11774058,11874114,and 12174058)。
文摘We propose a Rydberg molecule dressing scheme to create strong and long-ranged interactions at selective distances. This is achieved through laser coupling ground-state atoms off-resonantly to an attractive molecular curve of two interacting Rydberg atoms. Although dephasing due to Rydberg state decay occurs in all dressing schemes, an advantage of the molecule dressing is that a large ratio of dressed interaction to dephasing rate can be realized at large atomic separations. In an optical lattice or tweezer setting, we show that the strong interaction permits the fast generation of spin squeezing for several tens of dressed atoms.The proposed setting offers a new route to study complex many-body dynamics and to realize quantum information processing with non-convex long-range interactions.
