| | |  | | | | Record from Web of Science® | | | | | | |
| Coherent quantum dynamics of a superconducting flux qubit |
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| Author(s): Chiorescu I, Nakamura Y, Harmans CJPM, Mooij JE |
| Source: SCIENCE Volume: 299 Issue: 5614 Pages: 1869-1871 Published: MAR 21 2003 |
| Times Cited: 538 References: 15 |
| Abstract: We have observed coherent time evolution between two quantum states of a superconducting flux qubit comprising three Josephson junctions in a loop. The superposition of the two states carrying opposite macroscopic persistent currents is manipulated by resonant microwave pulses. Readout by means of switching-event measurement with an attached superconducting quantum interference device revealed quantum-state oscillations with high fidelity. Under strong microwave driving, it was possible to induce hundreds of coherent oscillations. Pulsed operations on this first sample yielded a relaxation time of 900 nanoseconds and a free-induction dephasing time of 20 nanoseconds. These results are promising for future solid-state quantum computing. |
| Document Type: Article |
| Language: English |
| Reprint Address: Chiorescu, I (reprint author), Delft Univ Technol, Dept Nanosci, Quantum Transport Grp, Lorentzweg 1, NL-2628 CJ Delft, Netherlands |
Addresses:
1. Delft Univ Technol, Dept Nanosci, Quantum Transport Grp, NL-2628 CJ Delft, Netherlands
2. Delft Univ Technol, Delft Inst Microelect & Submicron Technol, NL-2628 CJ Delft, Netherlands
3. NEC Fundamental Res Labs, Tsukuba, Ibaraki 3058501 Japan |
| Publisher: AMER ASSOC ADVANCEMENT SCIENCE, 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA |
| Subject Category: Multidisciplinary Sciences |
| IDS Number: 657LY |
| ISSN: 0036-8075 |
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| | | | | | | | | Record from Web of Science® | | | | | | | | | |