Stronger Quantum Speed Limit for Mixed Quantum States
In this paper, we derive a quantum speed limit for unitary evolution for the case of mixed quantum states using the stronger uncertainty relation for mixed quantum states. This bound can be optimized over different choices of Hermitian operators for a better bound. We illustrate this with some examp...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/25/7/1046 |
| _version_ | 1797589353816391680 |
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| author | Shrobona Bagchi Dimpi Thakuria Arun Kumar Pati |
| author_facet | Shrobona Bagchi Dimpi Thakuria Arun Kumar Pati |
| author_sort | Shrobona Bagchi |
| collection | DOAJ |
| description | In this paper, we derive a quantum speed limit for unitary evolution for the case of mixed quantum states using the stronger uncertainty relation for mixed quantum states. This bound can be optimized over different choices of Hermitian operators for a better bound. We illustrate this with some examples and show its better performance with respect to three existing bounds for mixed quantum states. |
| first_indexed | 2024-03-11T01:05:26Z |
| format | Article |
| id | doaj.art-259f8feffe7043cbafaad668c81aa303 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-11T01:05:26Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-259f8feffe7043cbafaad668c81aa3032023-11-18T19:13:57ZengMDPI AGEntropy1099-43002023-07-01257104610.3390/e25071046Stronger Quantum Speed Limit for Mixed Quantum StatesShrobona Bagchi0Dimpi Thakuria1Arun Kumar Pati2Center for Quantum Information, Korea Institute of Science and Technology, Seoul 02792, Republic of KoreaQuantum Information and Computation Group, Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad 211019, IndiaQuantum Information and Computation Group, Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad 211019, IndiaIn this paper, we derive a quantum speed limit for unitary evolution for the case of mixed quantum states using the stronger uncertainty relation for mixed quantum states. This bound can be optimized over different choices of Hermitian operators for a better bound. We illustrate this with some examples and show its better performance with respect to three existing bounds for mixed quantum states.https://www.mdpi.com/1099-4300/25/7/1046quantum speed limitmixed quantum statestime-energy uncertainty relation |
| spellingShingle | Shrobona Bagchi Dimpi Thakuria Arun Kumar Pati Stronger Quantum Speed Limit for Mixed Quantum States Entropy quantum speed limit mixed quantum states time-energy uncertainty relation |
| title | Stronger Quantum Speed Limit for Mixed Quantum States |
| title_full | Stronger Quantum Speed Limit for Mixed Quantum States |
| title_fullStr | Stronger Quantum Speed Limit for Mixed Quantum States |
| title_full_unstemmed | Stronger Quantum Speed Limit for Mixed Quantum States |
| title_short | Stronger Quantum Speed Limit for Mixed Quantum States |
| title_sort | stronger quantum speed limit for mixed quantum states |
| topic | quantum speed limit mixed quantum states time-energy uncertainty relation |
| url | https://www.mdpi.com/1099-4300/25/7/1046 |
| work_keys_str_mv | AT shrobonabagchi strongerquantumspeedlimitformixedquantumstates AT dimpithakuria strongerquantumspeedlimitformixedquantumstates AT arunkumarpati strongerquantumspeedlimitformixedquantumstates |