Analysis and control of multipartite quantum interactions for computation and communication

量子力学提供了开发新型信息处理协议的可能性，这些协议可能会给计算和通信带来革命性的变化。基于量子力学定律的算法执行某些任务的速度已经大大快于我们最快的计算机，而隐形传态和量子密码学等协议可以改变我们的安全通信能力。为了建造大规模的量子信息处理装置，需要精确地准备、操纵和测量多体量子系统。在小范围演示量子控制和信息处理方面已经取得了很大的进展，但随着系统的规模越来越大，挑战也越来越大，多体量子系统的表征和有效控制仍然是一个有趣的开放问题。这些多体系统可以在量子区域内表现出强大的非经典关联，在经典水平上表现出非线性混沌行为。

Quantum mechanics offers the possibility of developing novel information processing protocols that could revolutionize computing and communication. Algorithms based on quantum mechanical laws can already perform certain tasks dramatically faster than our fastest computers, and protocols such as teleportation and quantum cryptography can transform our secure communication capabilities. In order to build large-scale quantum information processing devices, it is necessary to accurately prepare, manipulate and measure many-body quantum systems. Much progress has been made in demonstrating quantum control and information processing on a small scale but the challenge grows with the size of the system and the characterization and efficient control of multipartite quantum systems remains an interesting open question. These multipartite systems can exhibit powerful non-classical correlations in the quantum regime, and nonlinear chaotic behaviour at the classical level.