期刊
NATURE PHOTONICS
卷 7, 期 7, 页码 545-549出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHOTON.2013.112
关键词
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资金
- ERC-Starting Grant 3D-QUEST (3D-Quantum Integrated Optical Simulation) [307783]
- Brazilian National Institute for Science and Technology of Quantum Information (INCT-IQ/CNPq)
The evolution of bosons undergoing arbitrary linear unitary transformations quickly becomes hard to predict using classical computers as we increase the number of particles and modes. Photons propagating in a multiport interferometer naturally solve this so-called boson sampling problem(1), thereby motivating the development of technologies that enable precise control of multiphoton interference in large interferometers(2-4). Here, we use novel three-dimensional manufacturing techniques to achieve simultaneous control of all the parameters describing an arbitrary interferometer. We implement a small instance of the boson sampling problem by studying three-photon interference in a five-mode integrated interferometer, confirming the quantum-mechanical predictions. Scaled-up versions of this set-up are a promising way to demonstrate the computational advantage of quantum systems over classical computers. The possibility of implementing arbitrary linear-optical interferometers may also find applications in high-precision measurements and quantum communication(5).
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