Quantum state sensitivity of an autoresonant superconducting circuit
K. W. Murch, E. Ginossar, S. J. Weber, R. Vijay, S. M. Girvin, I. Siddiqi
DOI 10.1103/PhysRevB.86.220503 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
When a frequency chirped excitation is applied to a classical high-Q nonlinear oscillator, its motion becomes dynamically synchronized to the drive and large oscillation amplitude is observed, provided the drive strength exceeds the critical threshold for autoresonance. We demonstrate that when such an oscillator is strongly coupled to a quantized superconducting qubit, both the effective nonlinearity and the threshold become a nontrivial function of the qubit-oscillator detuning. Moreover, the autoresonant threshold is dependent on the quantum state of the qubit and may be used to realize a high-fidelity, latching readout whose speed is not limited by the oscillator Q.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Low-characteristic-impedance superconducting tadpole resonators in the sub-gigahertz regime
similarity 0.94Miika Rasola et al.
Source status unknown — claims are unverified
Collective modes and their coupling to pair-breaking excitations in layered d-wave superconductors
similarity 0.94E. H. Hwang & S. Das Sarma
Source status unknown — claims are unverified
Ultrastrong Tunable Coupler Between Superconducting LC Resonators
similarity 0.94T. Miyanaga et al.
Source status unknown — claims are unverified
Disentangling the impact of quasiparticles and two-level systems on the statistics of superconducting-qubit lifetime
similarity 0.94Shaojiang Zhu et al.
Source status unknown — claims are unverified
Suppressing charge noise decoherence in superconducting charge qubits
similarity 0.94J. A. Schreier et al.
Source status unknown — claims are unverified
Controlling the Spontaneous Emission of a Superconducting Transmon Qubit
similarity 0.94A. A. Houck et al.
Source status unknown — claims are unverified