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arXiv · 0804.0523

Interaction-free measurements with superconducting qubits

G. S. Paraoanu
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Abstract

An interaction-free measurement protocol is described for a quantum circuit consisting of a superconducting qubit and a read-out Josephson junction. By measuring the state of the qubit one can ascertain the presence of a current pulse through the circuit at a previous time without any energy exchange between the qubit and the pulse.

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G. S. Paraoanu. 2008-04-03. Interaction-free measurements with superconducting qubits. https://doi.org/10.1103/physrevlett.97.180406

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