scholarly journals Kramers–Kronig relations and precision limits inquantum phase estimation

Optica ◽  
2021 ◽  
Author(s):  
Ilaria Gianani ◽  
Francesco Albarelli ◽  
Adriano verna ◽  
Valeria Cimini ◽  
Rafal Demkowicz-Dobrzanski ◽  
...  
Keyword(s):  
Phase Estimation

An Absolute Phase Estimation Method for Interferometry Imagery

2019 ◽  
Vol 1 (2) ◽  
pp. 14-19
Author(s):  
Sui Ping Lee ◽  
Yee Kit Chan ◽  
Tien Sze Lim
Keyword(s):  
Noise Suppression ◽  
Estimation Method ◽  
Phase Image ◽  
Phase Estimation ◽  
Phase Reconstruction ◽  
Estimation Algorithms ◽  
Absolute Phase ◽  
Filtering Rate ◽  
Interferometric Phase ◽  
Image Performance

Accurate interpretation of interferometric image requires an extremely challenging task based on actual phase reconstruction for incomplete noise observation. In spite of the establishment of comprehensive solutions, until now, a guaranteed means of solution method is yet to exist. The initially observed interferometric image is formed by 2π-periodic phase image that wrapped within (-π, π]. Such inverse problem is further corrupted by noise distortion and leads to the degradation of interferometric image. In order to overcome this, an effective algorithm that enables noise suppression and absolute phase reconstruction of interferometric phase image is proposed. The proposed method incorporates an improved order statistical filter that is able to adjust or vary on its filtering rate by adapting to phase noise level of relevant interferometric image. Performance of proposed method is evaluated and compared with other existing phase estimation algorithms. The comparison is based on a series of computer simulated and real interferometric data images. The experiment results illustrate the effectiveness and competency of the proposed method.

scholarly journals Squeezing as a resource to counteract phase diffusion in optical phase estimation

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
G. Carrara ◽  
M. G. Genoni ◽  
S. Cialdi ◽  
M. G. A. Paris ◽  
S. Olivares
Keyword(s):  
Phase Estimation ◽  
Optical Phase ◽  
Phase Diffusion
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