Experimental metrology beyond the standard quantum limit for a wide resources range
Abstract Adopting quantum resources for parameter estimation discloses the possibility to realize quantum sensors operating at a sensitivity beyond the standard quantum limit. Such an approach promises to reach the fundamental Heisenberg scaling as a function of the employed resources N in the estim...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-03-01
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| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-023-00691-y |
| _version_ | 1797863932032974848 |
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| author | Valeria Cimini Emanuele Polino Federico Belliardo Francesco Hoch Bruno Piccirillo Nicolò Spagnolo Vittorio Giovannetti Fabio Sciarrino |
| author_facet | Valeria Cimini Emanuele Polino Federico Belliardo Francesco Hoch Bruno Piccirillo Nicolò Spagnolo Vittorio Giovannetti Fabio Sciarrino |
| author_sort | Valeria Cimini |
| collection | DOAJ |
| description | Abstract Adopting quantum resources for parameter estimation discloses the possibility to realize quantum sensors operating at a sensitivity beyond the standard quantum limit. Such an approach promises to reach the fundamental Heisenberg scaling as a function of the employed resources N in the estimation process. Although previous experiments demonstrated precision scaling approaching Heisenberg-limited performances, reaching such a regime for a wide range of N remains hard to accomplish. Here, we show a method that suitably allocates the available resources permitting them to reach the same power law of Heisenberg scaling without any prior information on the parameter. We demonstrate experimentally such an advantage in measuring a rotation angle. We quantitatively verify sub-standard quantum limit performances for a considerable range of N (O(30,000)) by using single-photon states with high-order orbital angular momentum, achieving an error reduction, in terms of the obtained variance, >10 dB below the standard quantum limit. Such results can be applied to different scenarios, opening the way to the optimization of resources in quantum sensing. |
| first_indexed | 2024-04-09T22:43:34Z |
| format | Article |
| id | doaj.art-328e8b8cdd904ed4abb481b3d868b03c |
| institution | Directory Open Access Journal |
| issn | 2056-6387 |
| language | English |
| last_indexed | 2024-04-09T22:43:34Z |
| publishDate | 2023-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj.art-328e8b8cdd904ed4abb481b3d868b03c2023-03-22T11:59:23ZengNature Portfolionpj Quantum Information2056-63872023-03-01911910.1038/s41534-023-00691-yExperimental metrology beyond the standard quantum limit for a wide resources rangeValeria Cimini0Emanuele Polino1Federico Belliardo2Francesco Hoch3Bruno Piccirillo4Nicolò Spagnolo5Vittorio Giovannetti6Fabio Sciarrino7Dipartimento di Fisica, Sapienza Università di RomaDipartimento di Fisica, Sapienza Università di RomaNEST, Scuola Normale Superiore and Istituto Nanoscienze-CNRDipartimento di Fisica, Sapienza Università di RomaDepartment of Physics “E. Pancini”, Universitá di Napoli “Federico II”, Complesso Universitario MSADipartimento di Fisica, Sapienza Università di RomaNEST, Scuola Normale Superiore and Istituto Nanoscienze-CNRDipartimento di Fisica, Sapienza Università di RomaAbstract Adopting quantum resources for parameter estimation discloses the possibility to realize quantum sensors operating at a sensitivity beyond the standard quantum limit. Such an approach promises to reach the fundamental Heisenberg scaling as a function of the employed resources N in the estimation process. Although previous experiments demonstrated precision scaling approaching Heisenberg-limited performances, reaching such a regime for a wide range of N remains hard to accomplish. Here, we show a method that suitably allocates the available resources permitting them to reach the same power law of Heisenberg scaling without any prior information on the parameter. We demonstrate experimentally such an advantage in measuring a rotation angle. We quantitatively verify sub-standard quantum limit performances for a considerable range of N (O(30,000)) by using single-photon states with high-order orbital angular momentum, achieving an error reduction, in terms of the obtained variance, >10 dB below the standard quantum limit. Such results can be applied to different scenarios, opening the way to the optimization of resources in quantum sensing.https://doi.org/10.1038/s41534-023-00691-y |
| spellingShingle | Valeria Cimini Emanuele Polino Federico Belliardo Francesco Hoch Bruno Piccirillo Nicolò Spagnolo Vittorio Giovannetti Fabio Sciarrino Experimental metrology beyond the standard quantum limit for a wide resources range npj Quantum Information |
| title | Experimental metrology beyond the standard quantum limit for a wide resources range |
| title_full | Experimental metrology beyond the standard quantum limit for a wide resources range |
| title_fullStr | Experimental metrology beyond the standard quantum limit for a wide resources range |
| title_full_unstemmed | Experimental metrology beyond the standard quantum limit for a wide resources range |
| title_short | Experimental metrology beyond the standard quantum limit for a wide resources range |
| title_sort | experimental metrology beyond the standard quantum limit for a wide resources range |
| url | https://doi.org/10.1038/s41534-023-00691-y |
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