We study stability and collisions of quantum droplets (QDs) forming in a binary bosonic condensate trapped in parity-time ()-symmetric optical lattices. It is found that the stability of QDs in the -symmetric system depends strongly on the values of the imaginary part W ₀ of the -symmetric optical lattices, self-repulsion strength g, and the condensate norm N. As expected, the -symmetric QDs are entirely unstable in the broken -symmetric phase. However, the -symmetric QDs exhibit oscillatory stability with the increase of N and g in the unbroken -symmetric phase. Finally, collisions between -symmetric QDs are considered. The collisions of droplets with unequal norms are completely different from that in free space. Besides, a stable -symmetric QDs collides with an unstable ones tend to merge into breathers after the collision.

我们研究了在奇偶时间 ( ) 对称光学晶格中捕获的二元玻色子凝聚物中形成的量子液滴 (QD) 的稳定性和碰撞。据发现，量子点的在稳定性-对称系统上的虚部的值强烈地取决于w ^ ₀的的-对称光晶格，自斥力强度克，并且冷凝物规范Ñ。正如预期的那样，对称量子点在破坏对称相中是完全不稳定的。然而，随着N和g在不间断的对称相中的增加，对称 QD 表现出振荡稳定性。最后，之间的碰撞考虑-对称量子点。不等范数的液滴碰撞与自由空间的碰撞完全不同。此外，稳定的对称量子点与不稳定的量子点碰撞后往往会合并到呼吸器中。