Frequency multiplexing for readout of spin qubits
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 10, 2014
- Source ID
- 10.1063/1.4868107
Entities
People
- A. C. Gossard
- A. C. Mahoney
- D. J. Reilly
- H. Lu
- J. I. Colless
- J. M. Hornibrook
- S. Blanvillain
- X. G. Croot
Organizations
- Army Research Office
- University of Sydney