Ultimate on-chip quantum amplifier
We report amplification of electromagnetic waves by a single artificial atom in open 1D space. Our three-level artificial atom--a superconducting quantum circuit--coupled to a transmission line presents an analog of a natural atom in open space. The system is the most fundamental quantum amplifier w...
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| Veröffentlicht in: | Physical review letters 2010-05, Vol.104 (18), p.183603-183603, Article 183603 |
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| container_end_page | 183603 |
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| container_issue | 18 |
| container_start_page | 183603 |
| container_title | Physical review letters |
| container_volume | 104 |
| creator | Astafiev, O V Abdumalikov, Jr, A A Zagoskin, A M Pashkin, Yu A Nakamura, Y Tsai, J S |
| description | We report amplification of electromagnetic waves by a single artificial atom in open 1D space. Our three-level artificial atom--a superconducting quantum circuit--coupled to a transmission line presents an analog of a natural atom in open space. The system is the most fundamental quantum amplifier whose gain is limited by a spontaneous emission mechanism. The noise performance is determined by the quantum noise revealed in the spectrum of spontaneous emission, also characterized in our experiments. |
| doi_str_mv | 10.1103/PhysRevLett.104.183603 |
| format | Article |
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| ispartof | Physical review letters, 2010-05, Vol.104 (18), p.183603-183603, Article 183603 |
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| source | American Physical Society Journals |
| title | Ultimate on-chip quantum amplifier |
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