Eur. Phys. J. Special Topics 227, 2189–2194 (2019)
https://doi.org/10.1140/epjst/e2018-800081-0

Regular Article

Quantum Zeno and anti-Zeno effect on a two-qubit gate by dynamical decoupling

¹ Dipartimento di Fisica e Astronomia, Universitá di Catania, Via S. Sofia 64, 95123 Catania, Italy
² CNR-IMM Catania Universitá, Via Santa Sofia 64, 95123 Catania, Italy
³ Istituto Nazionale di Fisica Nucleare, Via Santa Sofia 64, 95123 Catania, Italy

^a e-mail: epaladino@dmfci.unict.it

Received: 29 April 2018
Received in final form: 6 December 2018
Published online: 18 January 2019

Abstract

Controlling the dynamics of entanglement and preventing its disappearance are central requisites for any implementation of quantum information processing. Many solid state qubits are affected by non-Markovian noise, often with 1/f spectrum. Leading order dephasing effects are captured by treating noise in the quasistatic approximation. In this article we investigate dynamical decoupling of a two-qubit gate studying the crossover from Zeno to anti-Zeno entanglement dynamics obtained by varying the sequence parameters.