• Controlling decoherence in Superconducting qubits: phenomenological model and microscopic origin of 1/f noise

• Origin of the charge noise in ultrasmall and medium-size Josephson devices.

• Origin of critical current fluctuations in Josephson junctions.

• Microscopic theory of the low frequency flux noise in superconducting SQUID loops

• Phenomenological characterization of low frequency noise and its effect on qubit dephasing.

• Topologically protected qubits in Josephson junction arrays

• Design of medium size Josephson junction arrays providing a protection from the environment, optimization of array parameters taking into account experimental constraints.

• Computation of IV characteristics of Josephson chains that will be used to determine experimentally the parameters  of the array building elements and to tune them. 

 

•  Efficient error correction protocols that take into account the physical characteristics of the noise.

• Development of error correction codes with high rates that take into account an asymmetry of the physical noise in which dephasing dominates.
• Proof and estimates of the fault tolerant thresholds for superconducting qubit implementations.