Choice of mutually unbiased bases and outcome labeling affecting measurement outcome secrecy
| Autoři | |
|---|---|
| Rok publikování | 2021 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Physical review A |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | https://journals.aps.org/pra/pdf/10.1103/PhysRevA.103.032206 |
| Doi | http://dx.doi.org/10.1103/PhysRevA.103.032206 |
| Klíčová slova | quantum measurement incompatibility; guessing game |
| Popis | Mutually unbiased bases (MUBs) are a crucial ingredient for many protocols in quantum information processing. Measurements performed in these bases are unbiased to the maximally possible extent, which is used to prove the randomness or secrecy of measurement results. In this work we show that certain properties of sets of MUBs crucially depend on their specific choice, including, somewhat surprisingly, measurement outcome labeling. If measurements are chosen in a coherent way, the secrecy of the result can be completely lost for specific sets of MUB measurements but partially retained for others. This could potentially impact a broad spectrum of applications where MUBs are utilized. |
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