| Autor: |
Qin, Fan, Meng-Yun, Ma, Yong-Nan, Sun, Qi-Ping, Su, Chui-Ping, Yang |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Optics Express. 30:34441 |
| ISSN: |
1094-4087 |
| DOI: |
10.1364/oe.469225 |
| Popis: |
Certifying quantum measurements is increasingly important for foundational insights in quantum information science. Here, we report an experimental certification of unknown quantum measurements in a semi-device-independent setting. For the first time, we experimentally demonstrate that genuine three-outcome positive operator-valued measures (POVMs) can be certified under the assumption of a limited overlap between the prepared quantum states. The generalized quantum measurements are realized through discrete-time quantum walk and our experimental results clearly show that three-outcome POVMs can be certified even in the presence of noise. Finally, we experimentally investigate that optimal POVMs for performing unambiguous state discrimination can be self-tested. Our work opens new avenues for robust certification of quantum systems in the prepare-and-measure scenario. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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