Entangling two oscillators with arbitrary asymmetric initial states
Entangling two oscillators with arbitrary asymmetric initial states
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将两个具有任意不对称初始状态的振荡器纠缠在一起
DOI：
10.1103/physreva.95.052341
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发表时间：
2017
影响因子：
2.9
通讯作者：
Han Siyuan
中科院分区：
文献类型：
--
作者：
Yang Chui-Ping;Su Qi-Ping;Zheng Shi-Biao;Nori Franco;Han Siyuan
提出了一个汉密尔顿算子，可用于转换任何非对称状态$|\r\n\r|\phi \rangle_{B}$的两个振荡器$a$和$B$进入纠缠态。此外，仅使用该哈密顿量和局域操作，两个最初处于任何非对称初始状态的振子可以与第三个振子纠缠。所制备的纠缠态可以被设计成具有任意程度的纠缠。讨论了该哈密顿量的实现问题。数值模拟结果表明，利用电流电路QED技术可以制备出两个微波光场的高保真纠缠态，如纠缠相干态、纠缠压缩态、纠缠相干压缩态和纠缠猫态等。我们的发现不仅为创造光的双色或三色纠缠开辟了一条新的途径，而且也为创造类波或类粒子纠缠或新型的类波和类粒子混合纠缠开辟了一条新的途径。
A Hamiltonian is presented, which can be used to convert any asymmetric state $|\varphi \rangle_{a}|\phi \rangle_{b}$ of two oscillators $a$ and $b$ into an entangled state. Furthermore, with this Hamiltonian and local operations only, two oscillators, initially in any asymmetric initial states, can be entangled with a third oscillator. The prepared entangled states can be engineered with an arbitrary degree of entanglement. A discussion on the realization of this Hamiltonian is given. Numerical simulations show that, with current circuit QED technology, it is feasible to generate high-fidelity entangled states of two microwave optical fields, such as entangled coherent states, entangled squeezed states, entangled coherent-squeezed states, and entangled cat states. Our finding opens a new avenue for creating not only two-color or three-color entanglement of light but also wave-like or particle-like entanglement or novel wave-like and particle-like hybrid entanglement.