Driven-dissipative preparation of entangled states in cascaded quantum-optical networks

作者：Stannigel K^*; Rabl P; Zoller P

来源：New Journal of Physics, 2012, 14(6): 063014.

DOI：10.1088/1367-2630/14/6/063014

We study the dissipative dynamics and the formation of entangled states in driven cascaded quantum networks, where multiple systems are coupled to a common unidirectional bath. Specifically, we identify the conditions under which emission and coherent reabsorption of radiation drives the whole network into a pure stationary state with non-trivial quantum correlations between the individual nodes. We illustrate this effect in more detail for the example of cascaded two-level systems, where we present an explicit preparation scheme that allows one to tune the whole network through %26apos;bright%26apos; and %26apos;dark%26apos; states associated with different multi-partite entanglement patterns. In a complementary setting consisting of cascaded nonlinear cavities, we find that two cavity modes can be driven into a non-Gaussian entangled dark state. Potential realizations of such cascaded networks with optical and microwave photons are discussed.

• 出版日期2012-6-14