Scalable continuous-variable entanglement of light beams produced by optical parametric oscillators
arXiv:0801.2706 · doi:10.1103/PhysRevA.77.022311
Abstract
We show that scalable multipartite entanglement among light fields may be generated by optical parametric oscillators (OPO). The tripartite entanglement existent among the three bright beams produced by a single OPO -- pump, signal, and idler -- is scalable to a system of many OPOs by pumping them in cascade with the same optical field. This latter serves as an entanglement distributor. The special case of two OPOs is studied, as it is shown that the resulting five bright beams share genuine multipartite entanglement. In addition, the structure of entanglement distribution among the fields can be manipulated to some degree by tuning the incident pump power. The scalability to many fields is straightforward, allowing an alternative implementation of a multipartite quantum information network with continuous variables.
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- Hexapartite entanglement in an above-threshold Optical Parametric Oscillator
- Quantum coherent control of highly multipartite continuous-variable entangled states by tailoring parametric interactions
- Genuine Multipartite Entanglement induced by a Thermal Acoustic Reservoir
- Large-scale multipartite entanglement in the quantum optical frequency comb of a depleted-pump optical parametric oscillator