Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4739454
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- EU
- Deutsche Forschungsgemeinschaft (DFG)
- State of Baden-Wurttemberg through the DFG-Center for Functional Nanostructures (CFN)
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An important desired ingredient of superconducting quantum circuits is a readout scheme whose complexity does not increase with the number of qubits involved in the measurement. Here, we present a readout scheme employing a single microwave line, which enables simultaneous readout of multiple qubits. Consequently, scaling up superconducting qubit circuits is no longer limited by the readout apparatus. Parallel readout of 6 flux qubits using a frequency division multiplexing technique is demonstrated, as well as simultaneous manipulation and time resolved measurement of 3 qubits. We discuss how this technique can be scaled up to read out hundreds of qubits on a chip. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4739454]
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