Robust Dynamical Decoupling for Quantum Computing and Quantum Memory | Phys. Rev. Lett. 106, 240501 (2011)
Robust Dynamical Decoupling for Quantum Computing and Quantum Memory
Alexandre M. Souza1, Gonzalo A. Álvarez1, and Dieter Suter1
1Fakultät Physik, Technische Universität Dortmund, D-44221, Dortmund, Germany
Received 21 March 2011; published 14 June 2011
Dynamical decoupling (DD) is a popular technique for protecting qubits from the environment. However, unless special care is taken, experimental errors in the control pulses used in this technique can destroy the quantum information instead of preserving it. Here, we investigate techniques for making DD sequences robust against different types of experimental errors while retaining good decoupling efficiency in a fluctuating environment. We present experimental data from solid-state nuclear spin qubits and introduce a new DD sequence that is suitable for quantum computing and quantum memory.
© 2011 American Physical Society