论文标题
旋转链的连续动态脱钩：引起两量相互作用以产生完美的纠缠
Continuous dynamical decoupling of spin chains: Inducing two-qubit interactions to generate perfect entanglement
论文作者
论文摘要
对旋转链中纠缠的有效控制对于量子信息处理应用非常有用。在本文中，我们提出了将强静态和振荡场的两种不同构型组合使用，以控制并在旋转链中的任何两个自旋之间在任何两个自旋之间产生近乎完美的纠缠，即使在噪声的情况下也是如此。我们的控制场不仅将自旋链与环境解散，而且可以选择性地修改自旋旋转相互作用，这使情况成为可能。通过适当地通过控制场调整这些自旋旋转相互作用，我们表明自旋链中任何两个旋转的量子状态都可以成为钟状状态。我们说明了各种自旋链的结果，例如XY模型，XYZ模型和Ising Spin链。
Efficient control over entanglement in spin chains is useful for quantum information processing applications. In this paper, we propose the use of a combination of two different configurations of strong static and oscillating fields to control and generate near-perfect entanglement between any two spins in a spin chain, even in the presence of noise. This is made possible by the fact that our control fields not only decouple the spin chain from its environment but also selectively modify the spin-spin interactions. By suitably tuning these spin-spin interactions via the control fields, we show that the quantum state of any two spins in the spin chain can be made to be a Bell state. We illustrate our results for various spin chains, such as the XY model, the XYZ model, and the Ising spin chain.
