Non-Demolition Dispersive Measurement of a Superconducting Qubit with a Microstrip SQUID Amplifier

Details Non-Demolition Dispersive Measurement of a Superconducting Qubit with a Microstrip SQUID Amplifier Non-Demolition Dispersive Measurement of a Superconducting Qubit with a Microstrip SQUID Amplifier

2011-12-01

arxiv.org/abs/1112.0357v1

Physics

Quantum Physics

15 pages, 8 figures

Scientific paper

We have studied the possibility of a single-shot non-demolition measurement of a superconducting qubit using a microstrip SQUID amplifier (MSA). The Johnson noise generated by all resistors in the MSA is taken into consideration. We show that a single-shot non-demolition measurement is possible with six photons in the measurement resonator. For a phase qubit inductively coupled to a measurement resonator we have obtained the expression for the mutual inductance required for measurement of the qubit state.

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