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Selective decoupling in multi-level quantum systems by the SU(2) sign anomaly

Giorgio Anfuso, Giulia Piccitto, Vittorio Romano, Elisabetta Paladino, Giuseppe Falci

Abstract

We investigate dynamical decoupling operated by $2π$-pulses in a two-level subspaces of a multilevel system showing that it may leads to selective decoupling. This provides a flexible strategy for decoupling transitions in a quantum network, when control to directly address them is not available which can be use to control internode interaction or actively suppress decoherence

Selective decoupling in multi-level quantum systems by the SU(2) sign anomaly

Abstract

We investigate dynamical decoupling operated by -pulses in a two-level subspaces of a multilevel system showing that it may leads to selective decoupling. This provides a flexible strategy for decoupling transitions in a quantum network, when control to directly address them is not available which can be use to control internode interaction or actively suppress decoherence

Paper Structure

This paper contains 4 sections, 13 equations, 1 figure.

Table of Contents

  1. Introduction
  2. Model
  3. Results and discussion
  4. Conclusion

Figures (1)

  • Figure 1: Diagrammatic representation of a generic sequence of n pulses