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...
| Hauptverfasser: | , , , |
|---|---|
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
American Physical Society
2024-08-01
|
| Schriftenreihe: | Physical Review Research |
| Online Zugang: | http://doi.org/10.1103/PhysRevResearch.6.L032039 |
| Zusammenfassung: | 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. |
|---|---|
| ISSN: | 2643-1564 |