Robust preparation and manipulation of protected qubits using time--varying Hamiltonians

Thomas Coudreau (1) , Benoît Douçot (2) , Romain Dubessy (1) , Daria Andreoli (1) , Pérola Milman (1, 3)

1 MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques
2 LPTHE - Laboratoire de Physique Théorique et Hautes Energies
3 ISMO - Institut des Sciences Moléculaires d'Orsay

We show that it is possible to initialize and manipulate in a deterministic manner protected qubits using time varying Hamiltonians. Taking advantage of the symmetries of the system, we predict the effect of the noise during the initialization and manipulation. These predictions are in good agreement with numerical simulations. Our study shows that the topological protection remains efficient under realistic experimental conditions.

Domaines: Physique Quantique [quant-ph]

Thomas Coudreau, Benoît Douçot, Romain Dubessy, Daria Andreoli, Pérola Milman. Robust preparation and manipulation of protected qubits using time--varying Hamiltonians. 2011. ⟨hal-00601629⟩