John P. T. Stenger, Nicholas T. Bronn, et al.
PRResearch
The ability to perform fast, high-fidelity readout of quantum bits (qubits) is essential to the goal of building a quantum computer. However, coupling a fast measurement channel to a superconducting qubit typically also speeds up its relaxation via spontaneous emission. Here, we use impedance engineering to design a filter by which photons may easily leave the resonator at the cavity frequency but not at the qubit frequency. We implement this broadband filter in both an on-chip and off-chip configuration.
John P. T. Stenger, Nicholas T. Bronn, et al.
PRResearch
R.P. Budoyo, Jared B. Hertzberg, et al.
Physical Review B
Nicholas T. Bronn, Baleegh Abdo, et al.
WOLTE 2016
Dennis Willsch, Dennis Rieger, et al.
Nature Physics