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cond-mat.mes-hall2004
Robustness of Decoherence-Free States for Charge Qubits under Local Non-uniformity
Tetsufumi Tanamoto, Shinobu Fujita
We analyze the robustness of decoherence-free (DF) subspace and subsystem in charge qubits, when difference from the collective decoherence measurement condition is large in the lo…
cond-mat.mes-hall2003
Measurement of Two-Qubit States by a Two-Island Single Electron Transistor
Tetsufumi Tanamoto, Xuedong Hu
We solve the master equations of two charged qubits measured by a single-electron transistor (SET) consisted of two islands. We show that in the sequential tunneling regime the SET…