Impossibility of adversarial self-testing and secure sampling
Self-testing is the task where spatially separated Alice and Bob cooperate to deduce the inner workings of untrusted quantum devices by interacting with them in a classical manner. We examine the task above where Alice and Bob do not trust each other which we call adversarial self-testing. We show t...
| Main Authors: | , , , |
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| Formato: | Artigo |
| Idioma: | English |
| Publicado: |
American Physical Society
2024-08-01
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| Series: | Physical Review Research |
| Acceso en liña: | http://doi.org/10.1103/PhysRevResearch.6.L032039 |
| Summary: | Self-testing is the task where spatially separated Alice and Bob cooperate to deduce the inner workings of untrusted quantum devices by interacting with them in a classical manner. We examine the task above where Alice and Bob do not trust each other which we call adversarial self-testing. We show that adversarial self-testing implies secure sampling—a simpler task that we introduce where distrustful Alice and Bob wish to sample from a joint probability distribution with the guarantee that an honest party's marginal is not biased. By extending impossibility results in two-party quantum cryptography, we give a simple proof that both of these tasks are impossible in all but trivial settings. |
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| ISSN: | 2643-1564 |