Estimation of decoherence in electromechanical circuits

Publication date: Available online 7 August 2019Source: Physics Letters AAuthor(s): Olímpio P. de Sá Neto, Helder A.S. CostaAbstractThis letter presents a schematic circuit with capacitive coupling between the CPW Cavity Center Trace (resonated with electromagnetic mode) and the mechanical Nanoresonator mediated by Transmon, resulting in the Cross-Kerr electromechanical effect. Then we show the dynamics of quantum states, showing the generation of superposition states and bipartite entanglement of continuous variables through nonlinear quantum electrodynamics in the circuit. Finally, we calculated and estimated the parameter for mechanical outcome through phase measurements of the CPW Cavity Center Trace electromagnetic mode.

Source: Physics Letters A - August 9, 2019 Category: Physics Source Type: research