Keeping a single qubit alive by experimental dynamic decoupling
Journal of Physics B: Atomic, Molecular and Optical Physics 44:2 (2011)
Abstract:
We demonstrate the use of dynamic decoupling techniques to extend the coherence time of a single memory qubit by nearly two orders of magnitude. By extending the Hahn spin-echo technique to correct for unknown, arbitrary polynomial variations in the qubit precession frequency, we show analytically that the required sequence of π-pulses is identical to the Uhrig dynamic decoupling (UDD) sequence. We compare UDD and Carr-Purcell-Meiboom-Gill (CPMG) sequences applied to a single 43Ca+ trapped-ion qubit and find that they afford comparable protection in our ambient noise environment. © 2011 IOP Publishing Ltd.Reduction of heating rate in a microfabricated ion trap by pulsed-laser cleaning
NEW JOURNAL OF PHYSICS 13 (2011) ARTN 123023
The wonderful world of relativity
Oxford U.P., 2011
Keeping a Single Qubit Alive by Experimental Dynamic Decoupling
(2010)
Superfast laser cooling.
Phys Rev Lett 104:18 (2010) 183001