We study spontaneous emission processes of two capacitively coupled superconducting qubits embedded in transmission-line resonators in a circuit-quantum electrodynamics architecture. We find that under proper conditions of the entanglement generating operation, a Purcell protection from spontaneous emission occurs. We discuss the dependence of this effect on the coupling energy between the two qubits and comment on the possibility of finding a trade-off between optimization of the gate with respect to low-frequency noise and relaxation effects.
Titolo: | Purcell effect in a circuit-QED implementation of a universal two-qubit gate |
Autori interni: | |
Data di pubblicazione: | 2012 |
Rivista: | |
Handle: | http://hdl.handle.net/20.500.11769/668 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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