Robust interferometric sensing using two-photon interference
Autor: | R. S. Piera, G. H. Aguilar, R. L. de Matos Filho, Stephen P. Walborn, Pablo L. Saldanha |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Quantum Physics
Computer science Phase (waves) General Physics and Astronomy FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Metrology Interferometry Interference (communication) Two-photon excitation microscopy 0103 physical sciences Path (graph theory) Phase noise Electronic engineering 010306 general physics 0210 nano-technology Science technology and society Quantum Physics (quant-ph) |
Popis: | Precise measurement of the angular deviation of an object is a common task in science and technology. Many methods use light for this purpose. Some of these exploit interference effects to achieve technological advantages, such as amplification effects, or simplified measurement devices. However, all of these schemes require phase stability to be useful. Here we show theoretically and experimentally that this drawback can be lifted by utilizing two-photon interference, which is known to be less sensitive to phase fluctuations. Our results show that non-classical interference can provide a path towards robust interferometric sensing, allowing for increased metrological precision in the presence of phase noise. Accepted at Physical Review Applied |
Databáze: | OpenAIRE |
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