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DC Field | Value | Language |
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dc.contributor.author | Ioannou, Christina | en_US |
dc.contributor.author | Nair, Ranjith | en_US |
dc.contributor.author | Fernandez-Corbaton, Ivan | en_US |
dc.contributor.author | Gu, Mile | en_US |
dc.contributor.author | Rockstuhl, Carsten | en_US |
dc.contributor.author | Lee, Changhyoup | en_US |
dc.date.accessioned | 2022-04-04T05:38:38Z | - |
dc.date.available | 2022-04-04T05:38:38Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Ioannou, C., Nair, R., Fernandez-Corbaton, I., Gu, M., Rockstuhl, C. & Lee, C. (2021). Optimal circular dichroism sensing with quantum light : multi-parameter estimation approach. Physical Review A, 104(5), 052615-. https://dx.doi.org/10.1103/PhysRevA.104.052615 | en_US |
dc.identifier.issn | 1050-2947 | en_US |
dc.identifier.uri | https://hdl.handle.net/10356/156065 | - |
dc.description.abstract | The measurement of circular dichroism (CD) has widely been exploited to distinguish the different enantiomers of chiral structures. It has been applied to natural materials (e.g. molecules) as well as to artificial materials (e.g. nanophotonic structures). However, especially for chiral molecules the signal level is very low and increasing the signal-to-noise ratio is of paramount importance to either shorten the necessary measurement time or to lower the minimum detectable molecule concentration. As one solution to this problem, we propose here to use quantum states of light in CD sensing to reduce the noise below the shot noise limit that is encountered when using coherent states of light. Through a multi-parameter estimation approach, we identify the ultimate quantum limit to precision of CD sensing, allowing for general schemes including additional ancillary modes. We show that the ultimate quantum limit can be achieved by various optimal schemes. It includes not only Fock state input in direct sensing configuration but also twin-beam input in ancilla-assisted sensing configuration, for both of which photon number resolving detection needs to be performed as the optimal measurement setting. These optimal schemes offer a significant quantum enhancement even in the presence of additional system loss. The optimality of a practical scheme using a twin-beam state in direct sensing configuration is also investigated in details as a nearly optimal scheme for CD sensing when the actual CD signal is very small. Alternative schemes involving single-photon sources and detectors are also proposed. This work paves the way for further investigations of quantum metrological techniques in chirality sensing. | en_US |
dc.description.sponsorship | Ministry of Education (MOE) | en_US |
dc.description.sponsorship | National Research Foundation (NRF) | en_US |
dc.language.iso | en | en_US |
dc.relation | NRF- NRFF2016-02 | en_US |
dc.relation | NRF2017- NRFANR004 Van-QuTe | en_US |
dc.relation | RG162/19 | en_US |
dc.relation.ispartof | Physical Review A | en_US |
dc.rights | © 2021 American Physical Society. All rights reserved. This paper was published in Physical Review A and is made available with permission of American Physical Society. | en_US |
dc.subject | Science::Physics::Optics and light | en_US |
dc.title | Optimal circular dichroism sensing with quantum light : multi-parameter estimation approach | en_US |
dc.type | Journal Article | en |
dc.contributor.school | School of Physical and Mathematical Sciences | en_US |
dc.contributor.research | Complexity Institute | en_US |
dc.identifier.doi | 10.1103/PhysRevA.104.052615 | - |
dc.description.version | Submitted/Accepted version | en_US |
dc.identifier.scopus | 2-s2.0-85120003049 | - |
dc.identifier.issue | 5 | en_US |
dc.identifier.volume | 104 | en_US |
dc.identifier.spage | 052615 | en_US |
dc.subject.keywords | Quantum Sensing | en_US |
dc.subject.keywords | Quantum Optics | en_US |
dc.description.acknowledgement | This work was partially supported by the Deutsche Forschungsgemeinschaft (DFG; German Research Foundation) under Germany’s Excellence Strategy via the Excellence Cluster 3D Matter Made to Order (EXC-2082/1–390761711), the VIRTMAT project at KIT, the National Research Foundation Singapore (NRF- NRFF2016-02), NRF Singapore and L’Agence Nationale de la Recherche Joint Project (NRF2017- NRFANR004 Van-QuTe), Singapore Ministry of Education (RG162/19), FQXi (FQXi-RFP-IPW-1903), the Quantum Engineering Program QEP-SP3, and KIAS Individual Grant No. QP081101 via the Quantum Universe Center at Korea Institute for Advanced Study. | en_US |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
Appears in Collections: | SPMS Journal Articles |
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2008.03888.pdf | 473.98 kB | Adobe PDF | View/Open |
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