Develops a non-perturbative diagonalization formalism for transmon-resonator circuits yielding closed-form expressions for dressed frequencies and Kerr couplings valid beyond the dispersive regime.
Improved Superconducting Qubit Readout by Qubit-Induced Nonlinearities
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
In dispersive readout schemes, qubit-induced nonlinearity typically limits the measurement fidelity by reducing the signal-to-noise ratio (SNR) when the measurement power is increased. Contrary to seeing the nonlinearity as a problem, here we propose to use it to our advantage in a regime where it can increase the SNR. We show analytically that such a regime exists if the qubit has a many-level structure. We also show how this physics can account for the high-fidelity avalanchelike measurement recently reported by Reed {\it et al.} [arXiv:1004.4323v1].
fields
cond-mat.mes-hall 1years
2019 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
-
Superconducting qubits beyond the dispersive regime
Develops a non-perturbative diagonalization formalism for transmon-resonator circuits yielding closed-form expressions for dressed frequencies and Kerr couplings valid beyond the dispersive regime.