Quantifying the phase of quantum states
| Autor: | Xu, Jianwei |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Physics Letters A 482 (2023) 129049 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physleta.2023.129049 |
| Popis: | Phase is a basic ingredient for quantum states since quantum mechanics uses complex numbers to describe quantum states. In this letter, we introduce a rigorous framework to quantify the phase of quantum states. To do so, we regard phase as a quantum resource, and specify the free states and free operations. We determine the conditions a phase measure should satisfy and provide some phase measures. We also propose the notion of intrinsic phase for quantum states. Comment: 8 pages, 3 figures. Any comments are welcome! |
| Databáze: | arXiv |
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