Heralded path-entangled NOON states generation from a reconfigurable photonic chip

doi:10.1088/1674-1056/ac3501

Abstract Maximal multi-photon entangled states, known as NOON states, play an essential role in quantum metrology. With the number of photons growing, NOON states are becoming increasingly powerful and advantageous for obtaining supersensitive and super-resolved measurements. In this paper, we propose a universal scheme for generating three- and four-photon path-entangled NOON states on a reconfigurable photonic chip via photons subtracted from pairs and detected by heralding counters. Our method is postselection free, enabling phase supersensitive measurements and sensing at the Heisenberg limit. Our NOON-state generator allows for integration of quantum light sources as well as practical and portable precision phase-related measurements.

Keywords: path-entangled NOON state phase measurement

Received: 14 October 2021
Revised: 26 October 2021
Accepted manuscript online: 01 November 2021

PACS:	42.50.-p	(Quantum optics)
	42.50.Dv	(Quantum state engineering and measurements)
	03.67.-a	(Quantum information)

Fund: Project supported by the National Basic Research Program of China (Grant No. 2017YFA0303700) and the Open Funds from the State Key Laboratory of High Performance Computing of China (HPCL, National University of Defense Technology).

Corresponding Authors: Ping Xu
E-mail: pingxu520@nju.edu.cn

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Xinyao Yu(于馨瑶), Pingyu Zhu(朱枰谕), Yang Wang(王洋), Miaomiao Yu(余苗苗), Chao Wu(吴超),Shichuan Xue(薛诗川), Qilin Zheng(郑骑林), Yingwen Liu(刘英文), Junjie Wu(吴俊杰), and Ping Xu(徐平) Heralded path-entangled NOON states generation from a reconfigurable photonic chip 2022 Chin. Phys. B 31 064203

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Heralded path-entangled NOON states generation from a reconfigurable photonic chip

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