Unified Theory of Dynamically Suppressed Qubit Decoherence in Thermal Baths
Abraham G. Kofman, Gershon Kurizki · Physical Review Letters · 2004
We develop a unified theory of dynamically suppressed decay and decoherence by external fields in qubits coupled to arbitrary thermal baths and dephasing sources. This general theory does not invoke the rotating-wave approximation, which fails for ultrafast field-induced modulations of qubit-bath coupling. Considerations for optimizing the dynamical suppression are outlined.