标题： 超冷钠-铷分子的玻色-爱因斯坦凝聚体，具有可调的偶极相互作用 显示英文标题

标题： Bose-Einstein condensate of ultracold sodium-rubidium molecules with tunable dipolar interactions

摘要： 实现极性分子的玻色-爱因斯坦凝聚是超冷物理和量子科学中的一个长期挑战，这是由于近似普遍的二体碰撞损失。 在这里，我们报告通过高效蒸发冷却产生了基态钠-铷分子的玻色-爱因斯坦凝聚，并使用双微波屏蔽技术抑制了损失。 能够调节这些超冷极性分子之间的偶极相互作用对于产生凝聚体至关重要，并为未来的应用提供了令人兴奋的前景。 我们探索了不同的偶极相互作用区域，实现了分子凝聚体的气体相和量子液滴相。 这项工作为研究具有强偶极相互作用的量子物质以及长程多体系统的量子模拟开辟了新的途径。 显示英文摘要

摘要： Realizing Bose-Einstein condensation of polar molecules is a long-standing challenge in ultracold physics and quantum science due to near-universal two-body collisional losses. Here, we report the production of a Bose-Einstein condensate of ground-state sodium-rubidium molecules via high efficiency evaporative cooling, with losses suppressed using the dual microwave shielding technique. The ability to tune the dipolar interaction between these ultracold polar molecules is crucial for producing the condensate and enables exciting prospects for future applications. We explore different regimes of dipolar interactions, realizing both the gas phase and the quantum droplet phase of the molecular condensate. This work opens new avenues for investigating quantum matter with strong dipolar interactions and for quantum simulation of long-range many-body systems.