Quantum fluctuations can stabilize Bose-Einstein condensates (BEC) against the mean-field collapse. Stabilization of the condensate has been observed in quantum degenerate Bose-Bose mixtures and dipolar BECs. The fine-tuning of the interatomic interactions can lead to the emergence of two new states of matter: liquid-like selfbound quantum droplets and supersolid crystals formed from these droplets. We review the properties of these exotic states of matter and summarize the experimental progress made using dipolar quantum gases and Bose-Bose mixtures. We conclude with an outline of important open questions that could be addressed in the future.

中文翻译：

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具有微调相互作用的新物质状态：量子液滴和偶极超固体

量子涨落可以稳定玻色-爱因斯坦凝聚体 (BEC) 以抵抗平均场塌缩。在量子简并玻色-玻色混合物和偶极 BEC 中观察到凝聚物的稳定性。原子间相互作用的微调可以导致出现两种新的物质状态：类液体自结合量子液滴和由这些液滴形成的超固体晶体。我们回顾了这些奇异物质状态的性质，并总结了使用偶极量子气体和玻色-玻色混合物取得的实验进展。最后，我们概述了未来可以解决的重要未解决问题。