Experimental realization of time-dependent phase-modulated continuous dynamical decoupling
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2017-07-25 |
| Journal | Physical review. A/Physical review, A |
| Authors | Demitry Farfurnik, N. Aharon, I. Cohen, Yonatan Hovav, Alex Retzker |
| Institutions | Hebrew University of Jerusalem |
| Citations | 43 |
Abstract
Section titled āAbstractāThe coherence times achieved with continuous dynamical decoupling techniques\nare often limited by fluctuations in the driving amplitude. In this work, we\nuse time-dependent phase-modulated continuous driving to increase the\nrobustness against such fluctuations in a dense ensemble of nitrogen-vacancy\ncenters in diamond. Considering realistic experimental errors in the system, we\nidentify the optimal modulation strength, and demonstrate an improvement of an\norder of magnitude in the spin-preservation of arbitrary states over\nconventional single continuous driving. The phase-modulated driving exhibits\ncomparable results to previously examined amplitude-modulated techniques, and\nis expected to outperform them in experimental systems having higher phase\naccuracy. The proposed technique could open new avenues for quantum information\nprocessing and many body physics, in systems dominated by high frequency\nspin-bath noise, for which pulsed dynamical decoupling is less effective.\n