Frequency division multiplexing readout and simultaneous manipulation of an array of flux qubits
Abstract
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.
- Publication:
-
Applied Physics Letters
- Pub Date:
- July 2012
- DOI:
- 10.1063/1.4739454
- arXiv:
- arXiv:1205.6375
- Bibcode:
- 2012ApPhL.101d2604J
- Keywords:
-
- frequency division multiplexing;
- quantum computing;
- readout electronics;
- superconducting devices;
- 03.67.Lx;
- 85.25.Am;
- Quantum computation;
- Superconducting device characterization design and modeling;
- Quantum Physics;
- Condensed Matter - Mesoscale and Nanoscale Physics;
- Condensed Matter - Superconductivity
- E-Print:
- 4 pages, 4 figures