Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, 6020 Innsbruck, Austria.
Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA.
Phys Rev Lett. 2014 Mar 28;112(12):120406. doi: 10.1103/PhysRevLett.112.120406. Epub 2014 Mar 26.
We show how engineered classical noise can be used to generate constrained Hamiltonian dynamics in atomic quantum simulators of many-body systems, taking advantage of the continuous Zeno effect. After discussing the general theoretical framework, we focus on applications in the context of lattice gauge theories, where imposing exotic, quasilocal constraints is usually challenging. We demonstrate the effectiveness of the scheme for both Abelian and non-Abelian gauge theories, and discuss how engineering dissipative constraints substitutes complicated, nonlocal interaction patterns by global coupling to laser fields.
我们展示了如何利用工程经典噪声在多体系统的原子量子模拟器中生成受约束的哈密顿动力学，利用连续的 Zen 效应。在讨论了一般的理论框架之后，我们将重点放在格点规范理论的应用上，在该理论中，施加奇异的、准局域约束通常是具有挑战性的。我们展示了该方案在阿贝尔和非阿贝尔规范理论中的有效性，并讨论了如何通过与激光场的全局耦合来代替复杂的、非局域相互作用模式来实现耗散约束的工程设计。
