Scaling of Dynamical Decoupling for Spin Qubits

Details Scaling of Dynamical Decoupling for Spin Qubits Scaling of Dynamical Decoupling for Spin Qubits

2011-08-18

arxiv.org/abs/1108.3682v2

Phys. Rev. Lett. 108, 086802 (2012)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

related articles at http://marcuslab.harvard.edu

Scientific paper

10.1103/PhysRevLett.108.086802

We investigate scaling of coherence time, T2, with the number of {\pi}-pulses, n_{\pi}, in a singlet- triplet spin qubit using Carr-Purcell-Meiboom-Gill (CPMG) and concatenated dynamical decoupling (CDD) pulse sequences. For an even numbers of CPMG pulses, we find a power law, T2 = (n_{\pi})^({\gamma}_e), with {\gamma}_e = 0.72\pm0.01, essentially independent of the envelope function used to extract T2. From this surprisingly robust value, a power-law model of the noise spectrum of the environment, S({\omega}) ~ {\omega}^(-{\beta}), yields {\beta} = {\gamma}_e/(1 - {\gamma}_e) = 2.6 \pm 0.1. Model values for T2(n_{\pi}) using {\beta} = 2.6 for CPMG with both even and odd n_{\pi} up to 32 and CDD orders 3 through 6 compare very well with experiment.

Affiliated with

Also associated with

No associations

Rating

Scaling of Dynamical Decoupling for Spin Qubits does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Scaling of Dynamical Decoupling for Spin Qubits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scaling of Dynamical Decoupling for Spin Qubits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-180872