| Autor: |
Hornibrook, J. M., Colless, J. I., Mahoney, A. C., Croot, X. G., Blanvillain, S., Lu, H., Gossard, A. C., Reilly, D. J. |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Applied Physics Letters 104, 103108, (2014) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1063/1.4868107 |
| Popis: |
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 realize dispersive gate-sensing in combination with charge detection based on two rf quantum point contacts (rf-QPCs). 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 is discussed. |
| Databáze: |
arXiv |
| Externí odkaz: |
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