Floquet time-crystals as sensors of AC fields
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866909214924865536 |
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| author | Iemini, Fernando Fazio, Rosario Sanpera, Anna |
| author_facet | Iemini, Fernando Fazio, Rosario Sanpera, Anna |
| contents | The long range spatial and temporal ordering displayed by discrete time crystals, can become advantageous properties when used for sensing extremely weak signals. Here, we investigate their performance as quantum sensors of weak AC-fields and demonstrate, using the quantum Fisher information measure, that they can overcome the shot noise limit while allowing long interrogation times. In such systems, collective interactions stabilize their dynamics against noise making them robust enough to protocol imperfections. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_03927 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Floquet time-crystals as sensors of AC fields Iemini, Fernando Fazio, Rosario Sanpera, Anna Quantum Physics Other Condensed Matter Statistical Mechanics The long range spatial and temporal ordering displayed by discrete time crystals, can become advantageous properties when used for sensing extremely weak signals. Here, we investigate their performance as quantum sensors of weak AC-fields and demonstrate, using the quantum Fisher information measure, that they can overcome the shot noise limit while allowing long interrogation times. In such systems, collective interactions stabilize their dynamics against noise making them robust enough to protocol imperfections. |
| title | Floquet time-crystals as sensors of AC fields |
| topic | Quantum Physics Other Condensed Matter Statistical Mechanics |
| url | https://arxiv.org/abs/2306.03927 |