• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >Quantum imaging with undetected photons
【24h】

Quantum imaging with undetected photons

机译：未检测到的光子的量子成像

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Information is central to quantum mechanics. In particular, quantum interference occurs only if there exists no information to distinguish between the superposed states. The mere possibility of obtaining information that could distinguish between overlapping states inhibits quantum interference. Here we introduce and experimentally demonstrate a quantum imaging concept based on induced coherence without induced emission. Our experiment uses two separate down-conversion nonlinear crystals (numbered NL1 and NL2), each illuminated by the same pump laser, creating one pair of photons (denoted idler and signal). If the photon pair is created in NL1, one photon (the idler) passes through the object to be imaged and is overlapped with the idler amplitude created in NL2, its source thus being undefined. Interference of the signal amplitudes coming from the two crystals then reveals the image of the object. The photons that pass through the imaged object (idler photons from NL1) are never detected, while we obtain images exclusively with the signal photons (from NL1 and NL2), which do not interact with the object. Our experiment is fundamentally different from previous quantum imaging techniques, such as interaction-free imaging or ghost imaging, because now the photons used to illuminate the object do not have to be detected at all and no coincidence detection is necessary. This enables the probe wavelength to be chosen in a range for which suitable detectors are not available. To illustrate this, we show images of objects that are either opaque or invisible to the detected photons. Our experiment is a prototype in quantum information-knowledge can be extracted by, and about, a photon that is never detected.
机译：信息对于量子力学至关重要。特别地，仅当不存在用于区分叠加状态的信息时，才会发生量子干涉。获得能够区分重叠状态的信息的唯一可能性就是抑制了量子干扰。在这里，我们介绍并实验证明了基于感应相干而没有感应发射的量子成像概念。我们的实验使用了两个单独的降频转换非线性晶体（编号为NL1和NL2），每个晶体都由同一泵浦激光照射，从而产生一对光子（分别表示惰轮和信号）。如果在NL1中创建光子对，则一个光子（惰轮）穿过要成像的对象，并与NL2中创建的惰轮振幅重叠，因此其源不确定。然后，来自两个晶体的信号幅度的干扰揭示了物体的图像。永远不会检测到穿过成像对象的光子（来自NL1的空闲光子），而我们仅获得信号光子（来自NL1和NL2）的图像，而信号光子不会与对象相互作用。我们的实验从根本上不同于以前的量子成像技术，例如无相互作用成像或重影成像，因为现在完全不必检测用于照亮物体的光子，也不需要重合检测。这样就可以在无法使用合适检测器的范围内选择探头波长。为了说明这一点，我们显示了被检测光子不透明或不可见的物体图像。我们的实验是一个量子信息知识的原型，它可以被一个从未被检测到的光子提取，并且大约可以被提取。

著录项

  • 来源
    《Nature》 |2014年第7515期|409-412|共4页
  • 作者

    Gabriela Barreto Lemos; Victoria Borish; Garrett D. Cole; Sven Ramelow; Radek Lapkiewicz; Anton Zeilinger;

  • 作者单位

    Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Boltzmanngasse 3, Vienna A-1090, Austria, Vienna Center for Quantum Science and Technology (VCQ), Faculty of Physics, University of Vienna, A-1090 Vienna, Austria;

    Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Boltzmanngasse 3, Vienna A-1090, Austria, Quantum Optics, Quantum Nanophysics, Quantum Information, University of Vienna, Boltzmanngasse 5, Vienna A-1090, Austria;

    Vienna Center for Quantum Science and Technology (VCQ), Faculty of Physics, University of Vienna, A-1090 Vienna, Austria, Quantum Optics, Quantum Nanophysics, Quantum Information, University of Vienna, Boltzmanngasse 5, Vienna A-1090, Austria;

    Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Boltzmanngasse 3, Vienna A-1090, Austria, Quantum Optics, Quantum Nanophysics, Quantum Information, University of Vienna, Boltzmanngasse 5, Vienna A-1090, Austria, Cornell University, 159 Clark Hall, 142 Science Drive, Ithaca, New York 14853, USA;

    Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Boltzmanngasse 3, Vienna A-1090, Austria, Quantum Optics, Quantum Nanophysics, Quantum Information, University of Vienna, Boltzmanngasse 5, Vienna A-1090, Austria;

    Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Boltzmanngasse 3, Vienna A-1090, Austria, Vienna Center for Quantum Science and Technology (VCQ), Faculty of Physics, University of Vienna, A-1090 Vienna, Austria, Quantum Optics, Quantum Nanophysics, Quantum Information, University of Vienna, Boltzmanngasse 5, Vienna A-1090, Austria;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号