Institute for Quantum Electronics, ETH Zurich, 8093 Zurich, Switzerland.
Phys Rev Lett. 2012 Dec 21;109(25):253606. doi: 10.1103/PhysRevLett.109.253606.
The search for Majorana fermions in p-wave paired fermionic systems has recently moved to the forefront of condensed matter research. Here we propose an alternative route and show theoretically that Majorana-like modes can be realized and probed in a driven-dissipative system of strongly correlated photons consisting of a chain of tunnel-coupled cavities, where p-wave pairing effectively arises from the interplay between strong on-site interactions and two-photon parametric driving. The nonlocal nature of these exotic modes could be demonstrated through cross-correlation measurements carried out at the ends of the chain--revealing a strong photon-bunching signature--and their non-Abelian properties could be simulated through tunnel-braid operations.
在 p 波配对费米子系统中寻找马约拉纳费米子最近成为凝聚态物理研究的前沿。在这里，我们提出了一种替代途径，并从理论上表明，马约拉纳型模式可以在由链状隧道耦合腔组成的强关联光子驱动耗散系统中实现和探测，其中 p 波配对有效地源于强局域相互作用和双光子参量驱动之间的相互作用。这些奇异模式的非局域性质可以通过在链末端进行的互相关测量来证明——揭示出强烈的光子聚束特征——并且它们的非阿贝尔性质可以通过隧道编织操作来模拟。
