Microwave Down-Conversion with an Impedance-Matched $\Lambda$ System in Driven Circuit QED
| Autor: | Inomata, K., Koshino, K., Lin, Z. R., Oliver, W. D., Tsai, J. S., Nakamura, Y., Yamamoto, T. |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Physical Review Letters 113, 063604 (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.113.063604 |
| Popis: | By driving a dispersively coupled qubit-resonator system, we realize an "impedance-matched" $\Lambda$ system that has two identical radiative decay rates from the top level and interacts with a semi-infinite waveguide. It has been predicted that a photon input from the waveguide deterministically induces a Raman transition in the system and switches its electronic state. We confirm this through microwave response to a continuous probe field, observing near-perfect ($99.7\%$) extinction of the reflection and highly efficient ($74\%$) frequency down-conversion. These proof-of-principle results lead to deterministic quantum gates between material qubits and microwave photons and open the possibility for scalable quantum networks interconnected with waveguide photons. Comment: 10 pages, 8 figures |
| Databáze: | arXiv |
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