Dynamically unpolarized single-photon source in diamond with intrinsic randomness.
Dynamically unpolarized single-photon source in diamond with intrinsic randomness.
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DOI：
10.1038/srep46722
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发表时间：
2017-04-26
影响因子：
4.6
通讯作者：
Edamatsu K
中科院分区：
文献类型：
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作者：
Abe N;Mitsumori Y;Sadgrove M;Edamatsu K
偏振是光的基本特性之一，在科学和技术中提供了大量应用。虽然各种量子应用都需要“动态非偏振”单光子源，但此类源从未被探索过。在这里，我们展示了金刚石中单个[111]取向氮空位中心的动态非偏振单光子发射，其中单光子流是非偏振的，表现出内在的随机性，时间相邻光子之间的偏振相关性消失。这些特性不仅可以生成真正的随机数，还可以实现量子物理学的基本测试。
Polarization is one of the fundamental properties of light, providing numerous applications in science and technology. While ‘dynamically unpolarized’ single-photon sources are demanded for various quantum applications, such sources have never been explored. Here we demonstrate dynamically unpolarized single-photon emission from a single [111]-oriented nitrogen- vacancy centre in diamond, in which the single-photon stream is unpolarized, exhibiting intrinsic randomness with vanishing polarization correlation between time adjacent photons. These properties not only allow true random number generation, but may also enable fundamental tests in quantum physics.