Manipulating the Quantum State of an Electrical Circuit.
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| Title: | Manipulating the Quantum State of an Electrical Circuit. |
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| Authors: | Vion, D., Aassime, A., Cotter, A., Joyez, P., Pothier, H., Urbina, C., Esteve, D., Devoret, M. H. |
| Source: | Science (pre-March 2025). 5/3/2002, Vol. 296 Issue 5569, p886-889. 4p. 3 Diagrams. |
| Subjects: | Superconductors, Electric circuits, Quantum theory |
| Abstract: | We have designed and operated a superconducting tunnel junction circuit that behaves as a two-level atom: the “quantronium.” An arbitrary evolution of its quantum state can be programmed with a series of microwave pulses, and a projective measurement of the state can be performed by a pulsed readout subcircuit. The measured quality factor of quantum coherence Qφ ≅ 25,000 is sufficiently high that a solid-state quantum processor based on this type of circuit can be envisioned. [ABSTRACT FROM AUTHOR] |
| Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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| Abstract: | We have designed and operated a superconducting tunnel junction circuit that behaves as a two-level atom: the “quantronium.” An arbitrary evolution of its quantum state can be programmed with a series of microwave pulses, and a projective measurement of the state can be performed by a pulsed readout subcircuit. The measured quality factor of quantum coherence Qφ ≅ 25,000 is sufficiently high that a solid-state quantum processor based on this type of circuit can be envisioned. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00368075 |
| DOI: | 10.1126/science.1069372 |
