Dynamic synthesis of Heisenberg-limited spin squeezing
Abstract Spin squeezing is a key resource in quantum metrology, allowing improvements of measurement signal-to-noise ratio. Its generation is a challenging task because the experimental realization of the required squeezing interaction remains difficult. Here, we propose a generic scheme to synthesi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2021-12-01
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| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-021-00505-z |
| _version_ | 1818337545541386240 |
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| author | Long-Gang Huang Feng Chen Xinwei Li Yaohua Li Rong Lü Yong-Chun Liu |
| author_facet | Long-Gang Huang Feng Chen Xinwei Li Yaohua Li Rong Lü Yong-Chun Liu |
| author_sort | Long-Gang Huang |
| collection | DOAJ |
| description | Abstract Spin squeezing is a key resource in quantum metrology, allowing improvements of measurement signal-to-noise ratio. Its generation is a challenging task because the experimental realization of the required squeezing interaction remains difficult. Here, we propose a generic scheme to synthesize spin squeezing in non-squeezing systems. By using periodical rotation pulses, the original non-squeezing interaction can be transformed into squeezing interaction, with significantly enhanced interaction strength. The sign of the interaction coefficient is also flippable, facilitating time-reversal readout protocol for nonlinear interferometers. The generated spin squeezing is capable of achieving the Heisenberg limit with measurement precision ∝ 1/N for N particles and its robustness to noises of pulse areas and separations has been verified as well. This work offers a path to extending the scope of Heisenberg-limited quantum precision measurements in non-squeezing systems. |
| first_indexed | 2024-12-13T14:56:55Z |
| format | Article |
| id | doaj.art-00e7f660660741b5bc51de6593626a42 |
| institution | Directory Open Access Journal |
| issn | 2056-6387 |
| language | English |
| last_indexed | 2024-12-13T14:56:55Z |
| publishDate | 2021-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj.art-00e7f660660741b5bc51de6593626a422022-12-21T23:41:12ZengNature Portfolionpj Quantum Information2056-63872021-12-01711710.1038/s41534-021-00505-zDynamic synthesis of Heisenberg-limited spin squeezingLong-Gang Huang0Feng Chen1Xinwei Li2Yaohua Li3Rong Lü4Yong-Chun Liu5State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua UniversityState Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua UniversityState Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua UniversityState Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua UniversityState Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua UniversityState Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua UniversityAbstract Spin squeezing is a key resource in quantum metrology, allowing improvements of measurement signal-to-noise ratio. Its generation is a challenging task because the experimental realization of the required squeezing interaction remains difficult. Here, we propose a generic scheme to synthesize spin squeezing in non-squeezing systems. By using periodical rotation pulses, the original non-squeezing interaction can be transformed into squeezing interaction, with significantly enhanced interaction strength. The sign of the interaction coefficient is also flippable, facilitating time-reversal readout protocol for nonlinear interferometers. The generated spin squeezing is capable of achieving the Heisenberg limit with measurement precision ∝ 1/N for N particles and its robustness to noises of pulse areas and separations has been verified as well. This work offers a path to extending the scope of Heisenberg-limited quantum precision measurements in non-squeezing systems.https://doi.org/10.1038/s41534-021-00505-z |
| spellingShingle | Long-Gang Huang Feng Chen Xinwei Li Yaohua Li Rong Lü Yong-Chun Liu Dynamic synthesis of Heisenberg-limited spin squeezing npj Quantum Information |
| title | Dynamic synthesis of Heisenberg-limited spin squeezing |
| title_full | Dynamic synthesis of Heisenberg-limited spin squeezing |
| title_fullStr | Dynamic synthesis of Heisenberg-limited spin squeezing |
| title_full_unstemmed | Dynamic synthesis of Heisenberg-limited spin squeezing |
| title_short | Dynamic synthesis of Heisenberg-limited spin squeezing |
| title_sort | dynamic synthesis of heisenberg limited spin squeezing |
| url | https://doi.org/10.1038/s41534-021-00505-z |
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