Experimental study of decoherence of the two-mode squeezed vacuum state via second harmonic generation
Decoherence remains one of the most serious challenges to the implementation of quantum technology. It appears as a result of the transformation over time of a quantum superposition state into a classical mixture due to the quantum system interacting with the environment. Since quantum systems are n...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2021-07-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.3.033095 |
| _version_ | 1797211032529141760 |
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| author | Fu Li Tian Li Girish S. Agarwal |
| author_facet | Fu Li Tian Li Girish S. Agarwal |
| author_sort | Fu Li |
| collection | DOAJ |
| description | Decoherence remains one of the most serious challenges to the implementation of quantum technology. It appears as a result of the transformation over time of a quantum superposition state into a classical mixture due to the quantum system interacting with the environment. Since quantum systems are never completely isolated from their environment, decoherence therefore cannot be avoided in realistic situations. Decoherence has been extensively studied, mostly theoretically, because it has many important implications in quantum technology, such as in the fields of quantum information processing, quantum communication, and quantum computation. Here we report a novel experimental scheme on the study of decoherence of a two-mode squeezed vacuum state via its second harmonic generation signal. Our scheme can directly extract the decoherence of the phase-sensitive quantum correlation 〈a[over ̂]b[over ̂]〉 between two entangled modes a and b. Such a correlation is the most important characteristic of a two-mode squeezed state. More importantly, this is an experimental study on the decoherence effect of a squeezed vacuum state, which has been rarely investigated. |
| first_indexed | 2024-04-24T10:20:02Z |
| format | Article |
| id | doaj.art-fc82813cc7e54ee7b0a898f2a7417809 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:20:02Z |
| publishDate | 2021-07-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-fc82813cc7e54ee7b0a898f2a74178092024-04-12T17:12:13ZengAmerican Physical SocietyPhysical Review Research2643-15642021-07-013303309510.1103/PhysRevResearch.3.033095Experimental study of decoherence of the two-mode squeezed vacuum state via second harmonic generationFu LiTian LiGirish S. AgarwalDecoherence remains one of the most serious challenges to the implementation of quantum technology. It appears as a result of the transformation over time of a quantum superposition state into a classical mixture due to the quantum system interacting with the environment. Since quantum systems are never completely isolated from their environment, decoherence therefore cannot be avoided in realistic situations. Decoherence has been extensively studied, mostly theoretically, because it has many important implications in quantum technology, such as in the fields of quantum information processing, quantum communication, and quantum computation. Here we report a novel experimental scheme on the study of decoherence of a two-mode squeezed vacuum state via its second harmonic generation signal. Our scheme can directly extract the decoherence of the phase-sensitive quantum correlation 〈a[over ̂]b[over ̂]〉 between two entangled modes a and b. Such a correlation is the most important characteristic of a two-mode squeezed state. More importantly, this is an experimental study on the decoherence effect of a squeezed vacuum state, which has been rarely investigated.http://doi.org/10.1103/PhysRevResearch.3.033095 |
| spellingShingle | Fu Li Tian Li Girish S. Agarwal Experimental study of decoherence of the two-mode squeezed vacuum state via second harmonic generation Physical Review Research |
| title | Experimental study of decoherence of the two-mode squeezed vacuum state via second harmonic generation |
| title_full | Experimental study of decoherence of the two-mode squeezed vacuum state via second harmonic generation |
| title_fullStr | Experimental study of decoherence of the two-mode squeezed vacuum state via second harmonic generation |
| title_full_unstemmed | Experimental study of decoherence of the two-mode squeezed vacuum state via second harmonic generation |
| title_short | Experimental study of decoherence of the two-mode squeezed vacuum state via second harmonic generation |
| title_sort | experimental study of decoherence of the two mode squeezed vacuum state via second harmonic generation |
| url | http://doi.org/10.1103/PhysRevResearch.3.033095 |
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