Metalens-array-based high-dimensional and multiphoton quantum source

Lin Li; Zexuan Liu; Xifeng Ren; Shuming Wang; Vin-Cent Su; Mu-Ku Chen; Cheng Hung Chu; Hsin Yu Kuo; Biheng Liu; Wenbo Zang; Guangcan Guo; Lijian Zhang; Zhenlin Wang; Shining Zhu; Din Ping Tsai

doi:10.1126/science.aba9779

Metalens-array-based high-dimensional and multiphoton quantum source

Science. 2020 Jun 26;368(6498):1487-1490. doi: 10.1126/science.aba9779.

Authors

Lin Li^#^{1

2

3

4}, Zexuan Liu^#^{1

5

6}, Xifeng Ren^#^{7

8}, Shuming Wang^#^{9

5

6}, Vin-Cent Su¹⁰, Mu-Ku Chen^{2

3

11}, Cheng Hung Chu^{3

11}, Hsin Yu Kuo^{3

11}, Biheng Liu^{7

8}, Wenbo Zang^{1

6}, Guangcan Guo^{7

8}, Lijian Zhang^{9

5

6}, Zhenlin Wang^{9

6}, Shining Zhu^{9

5

6}, Din Ping Tsai^{12

3

11}

Affiliations

¹ National Laboratory of Solid State Microstructures, School of Physics, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China.
² Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong.
³ Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan.
⁴ State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai, 200062, China.
⁵ Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, Nanjing University, Nanjing, 210093, China.
⁶ Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, China.
⁷ Key Laboratory of Quantum Information, CAS, University of Science and Technology of China, Hefei, 230026, China.
⁸ Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, 230026, China.
⁹ National Laboratory of Solid State Microstructures, School of Physics, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China. [email protected] [email protected] [email protected] [email protected] [email protected].
¹⁰ Department of Electrical Engineering, National United University, Miaoli 36003, Taiwan.
¹¹ Department of Physics, National Taiwan University, Taipei 10617, Taiwan.
¹² Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong. [email protected] [email protected] [email protected] [email protected] [email protected].

^# Contributed equally.

PMID: 32587020
DOI: 10.1126/science.aba9779

Abstract

The development of two-dimensional metasurfaces has shown great potential in quantum-optical technologies because of the excellent flexibility in light-field manipulation. By integrating a metalens array with a nonlinear crystal, we demonstrate a 100-path spontaneous parametric down-conversion photon-pair source in a 10 × 10 array, which shows promise for high-dimensional entanglement and multiphoton-state generation. We demonstrate two-, three- and four-dimensional two-photon path entanglement with different phases encoded by metalenses with fidelities of 98.4, 96.6, and 95.0%, respectively. Furthermore, four-photon and six-photon generation is observed with high indistinguishability of photons generated from different metalenses. Our metalens-array-based quantum photon source is compact, stable, and controllable, indicating a new platform for integrated quantum devices.

Publication types

Research Support, Non-U.S. Gov't