We demonstrate experimentally the simultaneous generation and detection of two types of continuous variable nonclassical states from one type-0 phase-matching optical parametric amplifcation (OPA) and subsequent two ring flter cavities (RFCs). The output feld of the OPA includes the baseband ω₀ and sideband modes ω₀± nω_f subjects to the cavity resonance condition, which are separated by two cascaded RFCs. The first RFC resonates with half the pump wavelength ω₀ and the transmitted baseband component is a squeezed state. The refected felds of the frst RFC, including the sideband modes ω₀± ω_f, are separated by the second RFC, construct Einstein–Podolsky–Rosen entangled state. All freedoms, including the filter cavities for sideband separation and relative phases for the measurements of these sidebands, are actively stabilized. The noise variance of squeezed states is 10.2 dB below the shot noise limit (SNL), the correlation variances of both quadrature amplitude-sum and quadrature phase-diference for the entanglement state are 10.0 dB below the corresponding SNL.

我们通过实验证明了从一个0型相位匹配光学参量放大（OPA）和随后的两个振铃腔（RFC）两种类型的连续可变非经典状态的同时生成和检测。在OPA的输出费尔德包括基带ω ₀和边带模式ω ₀ ±NΩ _˚F受试者空腔谐振条件，这是由两个级联的RFC分离。与泵波长的一半的第一RFC谐振ω ₀和发射的基带部件是挤压的状态。所述FRST RFC的refected felds，包括边带模式ω ₀ ±ω _˚F，由第二个RFC分隔，构造爱因斯坦-波多尔斯基-罗森纠缠态。积极稳定所有自由度，包括用于边带分离的滤波器腔和用于测量这些边带的相对相位。压缩状态的噪声方差比散粒噪声极限（SNL）低10.2 dB，对于纠缠态，正交幅度和和正交相位差的相关方差都比相应的SNL低10.0 dB。