Loss-tolerant quantum dense metrology with SU(1,1) interferometer
dc.contributor.author | Liu, Yuhong | |
dc.contributor.author | Li, Jiamin | |
dc.contributor.author | Cui, Liang | |
dc.contributor.author | Huo, Nan | |
dc.contributor.author | Assad, Syed M. | |
dc.contributor.author | Li, Xiaoying | |
dc.contributor.author | Ou, Z. Y. | |
dc.contributor.department | Physics, School of Science | en_US |
dc.date.accessioned | 2019-06-13T19:47:08Z | |
dc.date.available | 2019-06-13T19:47:08Z | |
dc.date.issued | 2018 | |
dc.description.abstract | Heisenberg uncertainty relation in quantum mechanics sets the limit on the measurement precision of non-commuting observables in one system, which prevents us from measuring them accurately at the same time. However, quantum entanglement between two systems allows us to infer through Einstein-Podolsky-Rosen correlations two conjugate observables with precision better than what is allowed by Heisenberg uncertainty relation. With the help of the newly developed SU(1,) interferometer, we implement a scheme to jointly measure information encoded in multiple non-commuting observables of an optical field with a signal-to-noise ratio improvement of about 20% over the classical limit on all measured quantities simultaneously. This scheme can be generalized to the joint measurement of information in arbitrary number of non-commuting observables. | en_US |
dc.eprint.version | Final published version | en_US |
dc.identifier.citation | Liu, Y., Li, J., Cui, L., Huo, N., Assad, S. M., Li, X., & Ou, Z. Y. (2018). Loss-tolerant quantum dense metrology with SU(1,1) interferometer. Optics Express, 26(21), 27705–27715. https://doi.org/10.1364/OE.26.027705 | en_US |
dc.identifier.uri | https://hdl.handle.net/1805/19612 | |
dc.language.iso | en | en_US |
dc.publisher | OSA | en_US |
dc.relation.isversionof | 10.1364/OE.26.027705 | en_US |
dc.relation.journal | Optics Express | en_US |
dc.rights | Attribution-NonCommercial 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/3.0/us/ | * |
dc.source | Publisher | en_US |
dc.subject | noise reduction | en_US |
dc.subject | optical amplifiers | en_US |
dc.subject | optical signal to noise ratio | en_US |
dc.title | Loss-tolerant quantum dense metrology with SU(1,1) interferometer | en_US |
dc.type | Article | en_US |