Frequency multiplexing for readout of spin qubits
Authors:
- 10 March 2014
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 104 (10) , 103108
Abstract
We demonstrate a low loss, chip-level frequency multiplexing scheme for readout of scaled-up spin qubit devices. By integrating separate bias tees and resonator circuits on-chip for each readout channel, we realise dispersive gate-sensing in combination with charge detection based on two radio frequency quantum point contacts. We apply this approach to perform multiplexed readout of a double quantum dot in the few-electron regime and further demonstrate operation of a 10-channel multiplexing device. Limitations for scaling spin qubit readout to large numbers of multiplexed channels are discussed.Keywords
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Funding Information
- USARO (W911NF-12-1-0354)
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