Spin squeezing: Thermal behavior and distribution on excited states
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866916509850271744 |
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| author | Mahdavifar, Saeed Cheraghi, Hadi Afrousheh, Kourosh |
| author_facet | Mahdavifar, Saeed Cheraghi, Hadi Afrousheh, Kourosh |
| contents | We investigate the spin-squeezing behavior under thermal effects in a one-dimensional transverse field XY model with spin-1/2. The exact solution of the model helps us to compute the spin-squeezing parameter as a function of temperature and also in all excited states with higher energy than the ground state. We find that below the thermal factorized field, h_f(T_{co}), there is no transition temperature. At the thermal factorized field, a transition from a thermal squeezed state to an unsqueezed state occurs at a specific temperature called the coherent temperature. Interestingly, we show that the finite temperature can create squeezed states from a state which at zero temperature is a coherent state. To complete our study, we also analyze the variation of the spin-squeezing parameter in the excited states and provide a behavioral analysis of the thermal spin-squeezing parameter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_04564 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spin squeezing: Thermal behavior and distribution on excited states Mahdavifar, Saeed Cheraghi, Hadi Afrousheh, Kourosh Quantum Physics We investigate the spin-squeezing behavior under thermal effects in a one-dimensional transverse field XY model with spin-1/2. The exact solution of the model helps us to compute the spin-squeezing parameter as a function of temperature and also in all excited states with higher energy than the ground state. We find that below the thermal factorized field, h_f(T_{co}), there is no transition temperature. At the thermal factorized field, a transition from a thermal squeezed state to an unsqueezed state occurs at a specific temperature called the coherent temperature. Interestingly, we show that the finite temperature can create squeezed states from a state which at zero temperature is a coherent state. To complete our study, we also analyze the variation of the spin-squeezing parameter in the excited states and provide a behavioral analysis of the thermal spin-squeezing parameter. |
| title | Spin squeezing: Thermal behavior and distribution on excited states |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2412.04564 |