Angerer Andreas, Putz Stefan, Krimer Dmitry O, Astner Thomas, Zens Matthias, Glattauer Ralph, Streltsov Kirill, Munro William J, Nemoto Kae, Rotter Stefan, Schmiedmayer Jörg, Majer Johannes
Vienna Center for Quantum Science and Technology, Atominstitut, Technische Universität Wien (TU Wien), Stadionallee 2, 1020 Vienna, Austria.
Zentrum für Mikro- und Nanostrukturen, TU Wien, Floragasse 7, 1040 Vienna, Austria.
Sci Adv. 2017 Dec 8;3(12):e1701626. doi: 10.1126/sciadv.1701626. eCollection 2017 Dec.
Nonlinear systems, whose outputs are not directly proportional to their inputs, are well known to exhibit many interesting and important phenomena that have profoundly changed our technological landscape over the last 50 years. Recently, the ability to engineer quantum metamaterials through hybridization has allowed us to explore these nonlinear effects in systems with no natural analog. We investigate amplitude bistability, which is one of the most fundamental nonlinear phenomena, in a hybrid system composed of a superconducting resonator inductively coupled to an ensemble of nitrogen-vacancy centers. One of the exciting properties of this spin system is its long spin lifetime, which is many orders of magnitude longer than other relevant time scales of the hybrid system. This allows us to dynamically explore this nonlinear regime of cavity quantum electrodynamics and demonstrate a critical slowing down of the cavity population on the order of several tens of thousands of seconds-a time scale much longer than observed so far for this effect. Our results provide a foundation for future quantum technologies based on nonlinear phenomena.
非线性系统的输出与其输入不成正比，众所周知，它们会展现出许多有趣且重要的现象，在过去50年里深刻地改变了我们的技术格局。最近，通过杂交来设计量子超材料的能力，使我们能够在没有天然类似物的系统中探索这些非线性效应。我们研究了由超导谐振器与氮空位中心系综电感耦合而成的混合系统中的幅度双稳性，这是最基本的非线性现象之一。这个自旋系统令人兴奋的特性之一是其长自旋寿命，比混合系统的其他相关时间尺度长许多个数量级。这使我们能够动态地探索腔量子电动力学的这个非线性区域，并证明腔布居数的临界减速达到数万秒的量级——这是一个比迄今为止观察到的这种效应的时间尺度长得多的时间尺度。我们的结果为基于非线性现象的未来量子技术奠定了基础。
