scholarly journals Enhanced on-chip phase measurement by inverse weak value amplification

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Meiting Song ◽  
John Steinmetz ◽  
Yi Zhang ◽  
Juniyali Nauriyal ◽  
Kevin Lyons ◽  
...  
Keyword(s):  
Optical Sensors ◽  
Phase Measurement ◽  
Optical Power ◽  
Weak Value ◽  
Quantum Domain ◽  
Noise Limit ◽  
On Chip ◽  
Multi Mode ◽  
Weak Value Amplification ◽  
Shot Noise Limit

AbstractOptical interferometry plays an essential role in precision metrology such as in gravitational wave detection, gyroscopes, and environmental sensing. Weak value amplification enables reaching the shot-noise-limit of sensitivity, which is difficult for most optical sensors, by amplifying the interferometric signal without amplifying certain technical noises. We implement a generalized form of weak value amplification on an integrated photonic platform with a multi-mode interferometer. Our results pave the way for a more sensitive, robust, and compact platform for measuring phase, which can be adapted to fields such as coherent communications and the quantum domain. In this work, we show a 7 dB signal enhancement in our weak value device over a standard Mach-Zehnder interferometer with equal detected optical power, as well as frequency measurements with 2 kHz sensitivity by adding a ring resonator.

Enhanced On-Chip Phase Measurement by Weak Value Amplification

2020 ◽  
Author(s):  
Meiting Song ◽  
John Steinmetz ◽  
Yi Zhang ◽  
Juniyali Nauriyal ◽  
Marissa Granados Baez ◽  
...  
Keyword(s):  
Phase Measurement ◽  
Weak Value ◽  
On Chip ◽  
Weak Value Amplification

scholarly journals Enhanced on-chip frequency measurement using weak value amplification

2022 ◽  
Author(s):  
John Steinmetz ◽  
Kevin Lyons ◽  
Meiting Song ◽  
Jaime Cardenas ◽  
Andrew Jordan
Keyword(s):  
Frequency Measurement ◽  
Weak Value ◽  
On Chip ◽  
Weak Value Amplification

Phase Measurement of Optical Fiber via Weak-Value Amplification

2019 ◽  
Vol 19 (16) ◽  
pp. 6742-6747
Author(s):  
Zhengchun Luo ◽  
Hao Wu ◽  
Liping Xu ◽  
Tianying Chang ◽  
Peng Wu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Phase Measurement ◽  
Weak Value ◽  
Weak Value Amplification

scholarly journals Surpassing the shot-noise limit by homodyne-mediated feedback

2016 ◽  
Vol 41 (17) ◽  
pp. 3932 ◽  
Author(s):  
Guofeng Zhang ◽  
Hanjie Zhu
Keyword(s):  
Shot Noise ◽  
Noise Limit ◽  
Shot Noise Limit

scholarly journals Overcoming detection loss and noise in squeezing-based optical sensing

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Gaetano Frascella ◽  
Sascha Agne ◽  
Farid Ya. Khalili ◽  
Maria V. Chekhova
Keyword(s):  
Shot Noise ◽  
Optical Sensing ◽  
Detection Efficiency ◽  
Signal To Noise Ratio ◽  
Real Life ◽  
Squeezed States ◽  
Squeezed Light ◽  
Noise Limit ◽  
Imaging And Spectroscopy ◽  
Shot Noise Limit

AbstractAmong the known resources of quantum metrology, one of the most practical and efficient is squeezing. Squeezed states of atoms and light improve the sensing of the phase, magnetic field, polarization, mechanical displacement. They promise to considerably increase signal-to-noise ratio in imaging and spectroscopy, and are already used in real-life gravitational-wave detectors. But despite being more robust than other states, they are still very fragile, which narrows the scope of their application. In particular, squeezed states are useless in measurements where the detection is inefficient or the noise is high. Here, we experimentally demonstrate a remedy against loss and noise: strong noiseless amplification before detection. This way, we achieve loss-tolerant operation of an interferometer fed with squeezed and coherent light. With only 50% detection efficiency and with noise exceeding the level of squeezed light more than 50 times, we overcome the shot-noise limit by 6 dB. Sub-shot-noise phase sensitivity survives up to 87% loss. Application of this technique to other types of optical sensing and imaging promises a full use of quantum resources in these fields.

scholarly journals Enhanced Weak-Value Amplification via Photon Recycling

2021 ◽  
Vol 126 (22) ◽  
Author(s):  
Courtney Krafczyk ◽  
Andrew N. Jordan ◽  
Michael E. Goggin ◽  
Paul G. Kwiat
Keyword(s):  
Weak Value ◽  
Photon Recycling ◽  
Weak Value Amplification

Optimization of Detectability in Laser-Based Polarimeters

1989 ◽  
Vol 43 (8) ◽  
pp. 1337-1341 ◽  
Author(s):  
Xiaobing Xi ◽  
Edward S. Yeung
Keyword(s):  
Shot Noise ◽  
Experimental Verification ◽  
High Frequency ◽  
Ohmic Heating ◽  
Unit Length ◽  
Power Input ◽  
Upper Limit ◽  
High Modulation ◽  
Noise Limit ◽  
Shot Noise Limit

To optimize the performance of a laser-based polarimeter, a mathematical simulation was performed. High-modulation currents allow a corresponding increase in signal. However, the effect of ohmic heating puts an upper limit on the power input to the solenoid. With this constraint, one can systematically choose the wire diameter and the number of turns per unit length. An experimental verification of the optimized parameters provided performance approaching the shot-noise limit. By using higher modulation currents, one can operate at 1 kHz to achieve detectability in the microdegree range, without the complications of high-frequency (100 kHz) modulation.

On-chip tunable multi-mode interference reflector

2018 ◽  
Vol 51 (49) ◽  
pp. 495101
Author(s):  
Fengxin Dong ◽  
Anjin Liu ◽  
Pijie Ma ◽  
Wanhua Zheng
Keyword(s):  
On Chip ◽  
Multi Mode ◽  
Mode Interference
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