Universal Dynamical Decoupling of a Single Solid-State Spin from a Spin Bath

TitleUniversal Dynamical Decoupling of a Single Solid-State Spin from a Spin Bath
Publication TypeJournal Article
Year of Publication2010
Authorsde Lange G, Wang ZH, Riste D, Dobrovitski VV, Hanson R
Journal TitleScience
Date Published10/01
ISBN Number0036-8075
Accession NumberISI:000282334500032
Keywordscoherent dynamics, COUPLED ELECTRON, diamond, DOTS, nuclear-spin, quantum memory

Controlling the interaction of a single quantum system with its environment is a fundamental challenge in quantum science and technology. We strongly suppressed the coupling of a single spin in diamond with the surrounding spin bath by using double-axis dynamical decoupling. The coherence was preserved for arbitrary quantum states, as verified by quantum process tomography. The resulting coherence time enhancement followed a general scaling with the number of decoupling pulses. No limit was observed for the decoupling action up to 136 pulses, for which the coherence time was enhanced more than 25 times compared to that obtained with spin echo. These results uncover a new regime for experimental quantum science and allow us to overcome a major hurdle for implementing quantum information protocols.

URL<Go to ISI>://000282334500032http://www.sciencemag.org/cgi/reprint/330/6000/60.pdf
Alternate JournalScience