Department of Physics, University of Virginia, Charlottesville, Virginia 22903, USA.
School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia.
Phys Rev Lett. 2014 Mar 28;112(12):120505. doi: 10.1103/PhysRevLett.112.120505. Epub 2014 Mar 26.
We report the experimental realization and characterization of one 60-mode copy and of two 30-mode copies of a dual-rail quantum-wire cluster state in the quantum optical frequency comb of a bimodally pumped optical parametric oscillator. This is the largest entangled system ever created whose subsystems are all available simultaneously. The entanglement proceeds from the coherent concatenation of a multitude of Einstein, Podolsky, and Rosen pairs by a single beam splitter, a procedure which is also a building block for the realization of hypercubic-lattice cluster states for universal quantum computing.
我们报告了在双泵浦光参量振荡器的量子光学频率梳中，一个双轨量子线簇态的 60 模拷贝和两个 30 模拷贝的实验实现和特性。这是迄今为止创建的最大纠缠系统，其子系统都可以同时使用。纠缠是通过单个分束器对大量爱因斯坦-波多尔斯基-罗森对的相干串联产生的，这一过程也是实现用于通用量子计算的超立方晶格簇态的基本步骤。
