论文标题
由纠缠状态表示和奇偶校验构建的新型不对称集成投影运算符
New kind of asymmetric integration projection operators constructed by entangled state representations and parity measurement
论文作者
论文摘要
通过在运算符和Dirac符号的有序产品中集成的技术，我们在纠缠状态表示中介绍了一种新型的不对称集成投影运算符。这些不对称投影操作员被证明是遗传操作员。然后，我们严格地证明它们对应于当任何两种模式量子状态通过该设备的奇偶校验测量与光束分离器相对应。因此，我们获得了Hermitian操作员与纠缠状态代表之间的新关系。作为应用，我们通过形式主义恢复了量子计量学奇偶校验测量的先前结果。
By means of the technique of integration within an ordered product of operators and Dirac notation, we introduce a new kind of asymmetric integration projection operators in entangled state representations. These asymmetric projection operators are proved to be the Hermitian operator. Then, we rigorously demonstrate that they correspond to a parity measurement combined with a beam splitter when any two-mode quantum state passes through such device. Therefore we obtain a new relation between a Hermitian operator and the entangled state representation. As applications, we recover the previous results of the parity measurement in quantum metrology by our formalism.
