48 citations · 64 across the 4 of their papers we have counts for
4 papers
Bloch-sphere approach to correlated noise in coupled qubits
Håkon Brox, Joakim Bergli, Yuri Galperin
By use of a generalized Bloch vector construction, we study the decoherence of a system composed of two interacting qubits in a general noisy environment. In particular, we investi…
Decoherence of a qubit due to a quantum fluctuator or to a classical telegraph noise
Henry J. Wold, Håkon Brox, Yuri M. Galperin +1
We investigate the decoherence of a qubit coupled to either a quantum two-level system (TLS) again coupled to an environment, or a classical fluctuator modeled by random telegraph…
The importance of level statistics for the decoherence of a central spin due to a spin environment
Håkon Brox, Joakim Bergli, Yuri M. Galperin
We study the decoherence of a central spin-1/2 due to a closed environment composed of spin-1/2 particles. It is known that a frustrated spin environment, such as a spin glass, is…
Effects of external driving on the coherence time of a Josephson junction qubit in a bath of two level fluctuators
Håkon Brox, Joakim Bergli, Yuri M. Galperin
We study the effect of external driving on the two level systems (TLSs) assumed to be a major obstacle in increasing the coherence time of solid state Josephson-junction qubits. We…