A Sensitive Quantumness Measure for One-Dimensional Continuous-Variable Systems
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866917303623352320 |
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| author | Steuernagel, Ole Hsieh, Hsien-Yi Chen, Yi-Ru Lee, Ray-Kuang |
| author_facet | Steuernagel, Ole Hsieh, Hsien-Yi Chen, Yi-Ru Lee, Ray-Kuang |
| contents | For one-dimensional continuous-variable quantum systems such as single-mode quantum optical systems, we give a quantification of the quantumness of such a system's state, ρ, by introducing the measure of quantumness, Ξ, which works for all states, pure or mixed. Ξ is a measure which is universal, sensitive, monotonic, and unbounded. Ξ[ρ] yields a single positive value to quantify how nonclassical ρ is. Ξ employs phase space distributions to represent ρ and is a fixed function, Ξ[.], independent of the system, its environment or the type of state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_17399 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | A Sensitive Quantumness Measure for One-Dimensional Continuous-Variable Systems Steuernagel, Ole Hsieh, Hsien-Yi Chen, Yi-Ru Lee, Ray-Kuang Quantum Physics For one-dimensional continuous-variable quantum systems such as single-mode quantum optical systems, we give a quantification of the quantumness of such a system's state, ρ, by introducing the measure of quantumness, Ξ, which works for all states, pure or mixed. Ξ is a measure which is universal, sensitive, monotonic, and unbounded. Ξ[ρ] yields a single positive value to quantify how nonclassical ρ is. Ξ employs phase space distributions to represent ρ and is a fixed function, Ξ[.], independent of the system, its environment or the type of state. |
| title | A Sensitive Quantumness Measure for One-Dimensional Continuous-Variable Systems |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2311.17399 |