Time-Varying Engineered Reservoir for the Improved Estimation of Atom-Cavity Coupling Strength
In this paper, we consider the application of quantum reservoir engineering in quantum metrology. More precisely, we are concerned with a system setup where a sequence of atoms constructing the “time-varying” quantum reservoir interact, in turn, with the trapped field in a cavity through the Jaynes–...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/2/157 |
| _version_ | 1827755831509123072 |
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| author | Ye Xia Weiming Guo Zibo Miao |
| author_facet | Ye Xia Weiming Guo Zibo Miao |
| author_sort | Ye Xia |
| collection | DOAJ |
| description | In this paper, we consider the application of quantum reservoir engineering in quantum metrology. More precisely, we are concerned with a system setup where a sequence of atoms constructing the “time-varying” quantum reservoir interact, in turn, with the trapped field in a cavity through the Jaynes–Cummings Hamiltonian. In particular, we were able to manipulate the initial states of reservoir atoms in order to enhance estimation precision regarding the coupling strength between each atom and the cavity (the coupling strength between each atom and the cavity was assumed to be identical). The novelty of this work lies in alternately preparing the atoms at two different states in a pairwise manner, such that the cavity could converge into a squeezed state with photonic loss to the environment taken into account. The control scheme proposed here thus leads to higher precision compared to the previous work where reservoir atoms were initialized at the same state, which drove the cavity to a coherent state. Detailed theoretical analysis and numerical simulations are also provided. In addition, this system setup and the associated control scheme are easily implemented for quantum metrology, since no entanglement is required for the preparation of atom states, and the final cavity state can stay steady. |
| first_indexed | 2024-03-11T08:15:34Z |
| format | Article |
| id | doaj.art-24d0bc7bb6984340bff738adeecc8573 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-11T08:15:34Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-24d0bc7bb6984340bff738adeecc85732023-11-16T22:45:09ZengMDPI AGPhotonics2304-67322023-02-0110215710.3390/photonics10020157Time-Varying Engineered Reservoir for the Improved Estimation of Atom-Cavity Coupling StrengthYe Xia0Weiming Guo1Zibo Miao2Harbin Institute of Technology, Shenzhen 518055, ChinaHarbin Institute of Technology, Shenzhen 518055, ChinaHarbin Institute of Technology, Shenzhen 518055, ChinaIn this paper, we consider the application of quantum reservoir engineering in quantum metrology. More precisely, we are concerned with a system setup where a sequence of atoms constructing the “time-varying” quantum reservoir interact, in turn, with the trapped field in a cavity through the Jaynes–Cummings Hamiltonian. In particular, we were able to manipulate the initial states of reservoir atoms in order to enhance estimation precision regarding the coupling strength between each atom and the cavity (the coupling strength between each atom and the cavity was assumed to be identical). The novelty of this work lies in alternately preparing the atoms at two different states in a pairwise manner, such that the cavity could converge into a squeezed state with photonic loss to the environment taken into account. The control scheme proposed here thus leads to higher precision compared to the previous work where reservoir atoms were initialized at the same state, which drove the cavity to a coherent state. Detailed theoretical analysis and numerical simulations are also provided. In addition, this system setup and the associated control scheme are easily implemented for quantum metrology, since no entanglement is required for the preparation of atom states, and the final cavity state can stay steady.https://www.mdpi.com/2304-6732/10/2/157quantum reservoir engineeringquantum metrologysqueezed states |
| spellingShingle | Ye Xia Weiming Guo Zibo Miao Time-Varying Engineered Reservoir for the Improved Estimation of Atom-Cavity Coupling Strength Photonics quantum reservoir engineering quantum metrology squeezed states |
| title | Time-Varying Engineered Reservoir for the Improved Estimation of Atom-Cavity Coupling Strength |
| title_full | Time-Varying Engineered Reservoir for the Improved Estimation of Atom-Cavity Coupling Strength |
| title_fullStr | Time-Varying Engineered Reservoir for the Improved Estimation of Atom-Cavity Coupling Strength |
| title_full_unstemmed | Time-Varying Engineered Reservoir for the Improved Estimation of Atom-Cavity Coupling Strength |
| title_short | Time-Varying Engineered Reservoir for the Improved Estimation of Atom-Cavity Coupling Strength |
| title_sort | time varying engineered reservoir for the improved estimation of atom cavity coupling strength |
| topic | quantum reservoir engineering quantum metrology squeezed states |
| url | https://www.mdpi.com/2304-6732/10/2/157 |
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