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20 April 2024 |
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Single-Shot Readout with the Radio Frequency Single Electron Transistor in the Presence of Charge Noise | | T. M. Buehler
; D. J. Reilly
; R. P. Starrett
; Andrew D. Greentree
; A. R. Hamilton
; A. S. Dzurak
; R. G.Clark
; | | Date: |
17 Apr 2003 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | The radio frequency single electron transistor (rf-SET) possesses key requirements necessary for reading out a solid state quantum computer. This work explores the use of the rf-SET as a single-shot readout device in the presence of 1/f and telegraph charge noise. For a typical spectrum of 1/f noise we find that high fidelity, single-shot measurements are possible for signals q > 0.01e. For the case of telegraph noise, we present a cross-correlation measurement technique that uses two rf-SETs to suppress the effect of random switching events on readout. We demonstrate this technique by monitoring the charge state of a metal double dot system on microsecond time-scales. Such a scheme will be advantageous in achieving high readout fidelity in a solid state quantum computer. | | Source: | arXiv, cond-mat/0304384 | | Services: | Forum | Review | PDF | Favorites | |
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