| Zugriffsnummer | 28404 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Robust trapped-ion quantum logic gates by continuous dynamical decoupling |
| Autor(in); Institution |
Bermudez, Alejandro; Universität Ulm, Institut für Theoretische Physik, Ulm, GERMANY
Schmidt, Piet O.; QUEST Institute for Experimental Quantum Metrology, PTB-Braunschweig
Plenio, Martin B.; Universität Ulm, Institut für Theoretische Physik, Ulm, GERMANY
Retzker, Alexander; Universität Ulm, Institut für Theoretische Physik, Ulm, GERMANY
|
| Quelle/Jahr | Physical Review A: 85 (2012), 4, 040302-1 - 040302-5 |
| ISSN | 0556-2791 (PRINT) ; 1094-1622 (ONLINE) |
| DOI | |
| Verlag | Melville, NY: AIP |
| Klassifikationscode | PACS: 03.67.Lx ; PACS: 32.80.Qk ; PACS: 37.10.Ty |
| Zusammenfassung | We introduce a scheme that combines phonon-mediated quantum logic gates in trapped ions with the benefits of continuous dynamical decoupling. We demonstrate theoretically that a strong driving of the qubit decouples it from external magnetic-field noise, enhancing the fidelity of two-qubit quantum gates. Moreover, the scheme does not require ground-state cooling, and is inherently robust to undesired ac Stark shifts. The underlying mechanism can be extended to a variety of other systems where a strong driving protects the quantum coherence of the qubits without compromising the two-qubit couplings. |
