Abstract

The Hanbury Brown and Twiss (HBT) interferometer was proposed to observe intensity correlations of starlight to measure a star’s angular diameter. As the intensity of light that reaches the detector from a star is very weak, one cannot usually get a workable signal-to-noise ratio. We propose an improved HBT interferometric scheme incorporating optical parametric amplifiers (OPA) into the system to amplify the correlation signal. Remarkably, for weak star light, the signal-to-noise ratio (SNR) in the new HBT interferometric scheme is much better than that of conventional HBT interferometer. Our work is valuable in measuring a star whose intensity at the detector is low and maybe also applicable in remote sensing and long-distance quantum imaging where the light passed through the object is weak after a long distance transmission.

Details

Title
Enhanced Hanbury Brown and Twiss interferometry using parametric amplification
Author
Ma, Xiaoping 1   VIAFID ORCID Logo  ; You Chenglong 2   VIAFID ORCID Logo  ; Adhikari Sushovit 3 ; Gu Yongjian 4 ; Magaña-Loaiza, Omar S 5 ; Dowling, Jonathan P 6 ; Hwang, Lee 3 

1  Qingdao University of Science and Technology, College of Mathematical and Physical Sciences, Qingdao, China (GRID:grid.412610.0) (ISNI:0000 0001 2229 7077); Louisiana State University, Hearne Institute for Theoretical Physics and Department of Physics & Astronomy, Baton Rouge, USA (GRID:grid.64337.35) (ISNI:0000 0001 0662 7451) 
2  Louisiana State University, Hearne Institute for Theoretical Physics and Department of Physics & Astronomy, Baton Rouge, USA (GRID:grid.64337.35) (ISNI:0000 0001 0662 7451); Louisiana State University, Quantum Photonics Laboratory, Department of Physics and Astronomy, Baton Rouge, USA (GRID:grid.64337.35) (ISNI:0000 0001 0662 7451) 
3  Louisiana State University, Hearne Institute for Theoretical Physics and Department of Physics & Astronomy, Baton Rouge, USA (GRID:grid.64337.35) (ISNI:0000 0001 0662 7451) 
4  Ocean University of China, Department of Physics, Qingdao, China (GRID:grid.4422.0) (ISNI:0000 0001 2152 3263) 
5  Louisiana State University, Quantum Photonics Laboratory, Department of Physics and Astronomy, Baton Rouge, USA (GRID:grid.64337.35) (ISNI:0000 0001 0662 7451) 
6  Louisiana State University, Hearne Institute for Theoretical Physics and Department of Physics & Astronomy, Baton Rouge, USA (GRID:grid.64337.35) (ISNI:0000 0001 0662 7451); NYU Shanghai, NYU-ECNU Institute of Physics, Shanghai, China (GRID:grid.449457.f); University of Science and Technology of China, CAS-Alibaba Quantum Computing Laboratory, CAS Center for Excellence in Quantum Information and Quantum Physics, Shanghai, China (GRID:grid.59053.3a) (ISNI:0000000121679639) 
Publication year
2020
Publication date
Dec 2020
Publisher
Springer Nature B.V.
e-ISSN
21960763
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1140/epjqt/s40507-020-00085-5
ProQuest document ID
2418450875
Copyright
© The Author(s) 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.