Local mapping of detector response for reliable quantum state estimation.
Local mapping of detector response for reliable quantum state estimation.
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DOI：
10.1038/ncomms5332
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发表时间：
2014-07-14
影响因子：
16.6
通讯作者：
Smith, Brian J.
中科院分区：
文献类型：
--
作者：
Cooper, Merlin;Karpinski, Michal;Smith, Brian J.
改进的测量技术是技术发展和基础科学探索的核心。量子物理学依赖于对系统非经典特征敏感的探测器，从而能够精确测试物理定律和量子增强技术，包括精密测量和安全通信。针对量子尺度输入的准确探测器响应校准是这些相关领域未来研究和开发的关键。为了满足这一要求，最近引入了量子探测器断层扫描。然而，随着探测器响应和输入空间的复杂性在许多测量结果和所需的探头状态中不断增加，这项技术变得越来越具有挑战性，从而对实验和数据分析提出了进一步的要求。在这里，我们提出了一种多功能、替代表征技术的实验实现，以解决限制输入校准区域且不涉及数值后处理的多结果量子探测器。为了证明这种方法的适用性，随后使用校准的探测器来估计非经典光子数状态。 量子信息协议的成功实现依赖于量子态的表征和测量。在这里，库珀等人。实验证明了一种能够使用有限资源校准具有大量结果的探测器的技术。
Improved measurement techniques are central to technological development and foundational scientific exploration. Quantum physics relies on detectors sensitive to non-classical features of systems, enabling precise tests of physical laws and quantum-enhanced technologies including precision measurement and secure communications. Accurate detector response calibration for quantum-scale inputs is key to future research and development in these cognate areas. To address this requirement, quantum detector tomography has been recently introduced. However, this technique becomes increasingly challenging as the complexity of the detector response and input space grow in a number of measurement outcomes and required probe states, leading to further demands on experiments and data analysis. Here we present an experimental implementation of a versatile, alternative characterization technique to address many-outcome quantum detectors that limits the input calibration region and does not involve numerical post processing. To demonstrate the applicability of this approach, the calibrated detector is subsequently used to estimate non-classical photon number states. The successful realization of quantum information protocols relies on characterization of quantum states and measurements. Here, Cooper et al. experimentally demonstrate a technique enabling calibration of a detector with a sizeable number of outcomes using a limited amount of resources.
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影响因子：
2.9
作者：
Banaszek, K;D'Ariano, GM;Sacchi, MF
通讯作者：
Sacchi, MF
影响因子：
8.6
作者：
Brida, G.;Ciavarella, L.;Polyakov, S. V.
通讯作者：
Polyakov, S. V.
影响因子：
1.3
作者：
Chuang, IL;Nielsen, MA
通讯作者：
Nielsen, MA
DOI：
10.1088/1464-4266/6/6/014
发表时间：
2004-06-01
期刊：
JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS
影响因子：
--
作者：
Lvovsky, AI
通讯作者：
Lvovsky, AI
影响因子：
8.6
作者：
Amri, Taoufik;Laurat, Julien;Fabre, Claude
通讯作者：
Fabre, Claude