宏观量子态（macroscopic quantum state）。通常量子力学是描述 微观体系的，但在一系列情况下宏观体系也要用量子力学描述，这种宏观体系的状态称宏观量子态。如超导中电子的库珀对。
系统处于这两个宏观量子态的相干叠加态，它们之间由于相干隧穿导致能级的劈裂。
The system is in the state of the superposition of the two macroscopic quantum states. Thecoherent tunnelling between them leads to the energy splitting.
通过调节腔场的长度、圆频率，以及镜子的质量、振动频率等宏观物理量，可以获得不同的量子态。
Via adjusting the coupling constant of cavity and mirror, as well as the vibration frequency of mirror, different quantum states have been obtained.
文章作者解释了如何通过量子隧穿实现宏观量子相干(即薛定谔猫态的相干叠加)和量子态位相干涉。
We explain how to realize macroscopic quantum coherence, namely the superposition of Schrdinger cat states and quantum phase interference by means of quantum tunneling.
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