Antonio D. Córcoles, Easwar Magesan, et al.
Nature Communications
We present a readout scheme for phase qubits which eliminates the read-out superconducting quantum interference device so that the entire qubit and measurement circuitry only require a single Josephson junction. Our scheme capacitively couples the phase qubit directly to a transmission line and detects its state after the measurement pulse by determining a frequency shift observable in the forward scattering parameter of the readout microwaves. This readout is extendable to multiple phase qubits coupled to a common readout line and can in principle be used for other flux biased qubits having two quasistable readout configurations. © 2010 American Institute of Physics.
Antonio D. Córcoles, Easwar Magesan, et al.
Nature Communications
Shwetank Kumar, Anastasios Vayonakis, et al.
IEEE TAS
Luca Chirolli, Guido Burkard, et al.
Physical Review Letters
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SPIE Sensing Technology + Applications 2015