Quantum entanglement is the quintessence of quantum information science governed by quantum superposition mostly limited to a microscopic regime. For practical applications, however, macroscopic entanglement has an essential benefit for quantum sensing and metrology to beat its classical counterpart. Recently, a coherence approach for entanglement generation has been proposed and demonstrated in a coupled interferometric system using classical laser light, where the quantum feature of entanglement has been achieved via phase basis superposition between identical interferometric systems. Such a coherence method is based on the wave nature of a photon without violating quantum mechanics under the complementarity theory. Here, a method of phase basis quantization via phase basis superposition is presented for macroscopic entanglement in an interferometric system, which is corresponding to the energy quantization of a photon.

量子纠缠是由量子叠加控制的量子信息科学的精髓，主要限于微观机制。然而，对于实际应用，宏观纠缠对于量子传感和计量学来说具有重要的优势，可以击败其经典对应物。最近，在使用经典激光的耦合干涉测量系统中提出并演示了一种用于产生纠缠的相干方法，其中纠缠的量子特征是通过相同干涉测量系统之间的相位基础叠加实现的。这种相干方法基于光子的波动性，不违反互补理论下的量子力学。这里，