Four-Photon Quantum Interferometry at a Telecom Wavelength
Four-Photon Quantum Interferometry at a Telecom Wavelength
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DOI：
10.1103/physreva.86.010302
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发表时间：
2011-12
影响因子：
2.9
通讯作者：
M. Yabuno;R. Shimizu;Y. Mitsumori;H. Kosaka;K. Edamatsu
中科院分区：
文献类型：
--
作者：
M. Yabuno;R. Shimizu;Y. Mitsumori;H. Kosaka;K. Edamatsu
电子通信大学前沿科学与工程中心，东京182-8585，日本（日期：2011年12月12日）我们报告了使用电信波长光子的四光子量子干涉的实验演示。实现多光子量子干涉是实现线性光量子信息处理和基于测量的量子计算的基础。我们研制了一种在电信波长范围内以纯光谱时间模式有效发射光子对的光源，并证明了量子干涉显示出与四光子“NOON”态的约化布罗意波长相对应的约化条纹间隔。我们的研究结果将为利用电信波长的光子进行实际的量子信息处理开辟一条道路。
Center for Frontier Science and Engineering, University of Electro-Communications, Tokyo 182-8585, Japan(Dated: December 12, 2011)We report the experimental demonstration of four-photon quantum interference using telecom-wavelength photons. Realization of multi-photon quantum interference is essential to linear opticsquantum information processing and measurement-based quantum computing. We have developeda source that efficiently emits photon pairs in a pure spectrotemporal mode at a telecom wavelengthregion, and have demonstrated the quantum interference exhibiting the reduced fringe intervals thatcorrespond to the reduced de Broglie wavelength of up to the four photon ‘NOON’ state. Our resultshould open a path to practical quantum information processing using telecom-wavelength photons.