Perfect quantum-state synchronization
| Autor: | Czartowski, Jakub, Müller, Ronny, Zyczkowski, Karol, Braun, Daniel |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 104, 012410 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.104.012410 |
| Popis: | We investigate the most general mechanisms that lead to perfect synchronization of the quantum states of all subsystems of an open quantum system starting from an arbitrary initial state. We provide a necessary and sufficient condition for such "quantum-state synchronization", prove tight lower bounds on the dimension of the environment's Hilbert space in two main classes of quantum-state synchronizers, and give an analytical solution for their construction. The functioning of the found quantum-state synchronizer of two qubits is demonstrated experimentally on an IBM quantum computer and we show that the remaining asynchronicity is a sensitive measure of the quantum computer's imperfection. Comment: 10 pages, 4 figures |
| Databáze: | arXiv |
| Externí odkaz: |
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