Demonstration of a programmable source of two-photon multiqubit entangled states
Demonstration of a programmable source of two-photon multiqubit entangled states
复制标题
双光子多量子位纠缠态可编程源的演示
DOI：
10.1103/physreva.81.042322
复制
发表时间：
2009
影响因子：
2.9
通讯作者：
M. Paris
中科院分区：
文献类型：
--
作者：
S. Cialdi;D. Brivio;M. Paris
We suggest and demonstrate a novel source of two-photon multipartite entangled states which exploits the transverse spatial structure of spontaneous parametric down-conversion together with a programmable spatial light modulator (SLM). The one-dimensional SLM is used to perform polarization entanglement purification and to realize arbitrary phase gates between polarization and momentum degrees of freedom of photons. We experimentally demonstrate our scheme by generating two-photon three-qubit linear cluster states with high fidelity using a diode laser pump with a limited coherence time and power on the crystal as low as {approx}2.5 mW.
