| Autor: |
Blumenthal, Eliya, Mor, Chen, Diringer, Asaf A., Martin, Leigh S., Lewalle, Philippe, Burgarth, Daniel, Whaley, K. Birgitta, Hacohen-Gourgy, Shay |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
npj Quantum Information (2022) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1038/s41534-022-00594-4 |
| Popis: |
The Zeno effect occurs in quantum systems when a very strong measurement is applied, which can alter the dynamics in non-trivial ways. Despite being dissipative, the dynamics stay coherent within any degenerate subspaces of the measurement. Here we show that such a measurement can turn a single-qubit operation into a two- or multi-qubit entangling gate, even in a non-interacting system. We demonstrate this gate between two effectively non-interacting transmon qubits. Our Zeno gate works by imparting a geometric phase on the system, conditioned on it lying within a particular non-local subspace. These results show how universality can be generated not only by coherent interactions as is typically employed in quantum information platforms, but also by Zeno measurements. |
| Databáze: |
arXiv |
| Externí odkaz: |
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