Development and operation of the twin radio frequency single electron transistor for solid state qubit readout

Abstract

Ultra-sensitive detectors and readout devices based on the radio frequency single electron transistor (rf-SET) combine near quantum-limited sensitivity with fast operation. Here we describe a twin rf-SET detector that uses two superconducting rf-SETs to perform fast, real-time cross-correlated measurements in order to distinguish sub-electron signals from charge noise on microsecond time-scales. The twin rf-SET makes use of two tuned resonance circuits to simultaneously and independently address both rf-SETs using wavelength division multiplexing (WDM) and a single cryogenic amplifier. We focus on the operation of the twin rf-SET as a charge detector and evaluate the cross-talk between the two resonance circuits. Real time suppression of charge noise is demonstrated by cross correlating the signals from the two rf-SETs. For the case of simultaneous operation, the rf-SETs had charge sensitivities of $\delta q_{SET1}=7.5\mu e/\sqrt{Hz}$ and $\delta q_{SET2}=4.4\mu e/\sqrt{Hz}$.

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References in corpus (4)

• Resonant Cooper Pair Tunneling: Quantum Noise and Measurement Characteristics
• Sensitivity of a micromechanical displacement detector based on the radio-frequency single-electron transistor
• Charge noise analysis of an AlGaAs/GaAs quantum dot using transmission-type radio-frequency single-electron transistor technique
• Correlated charge detection for read-out of a solid state quantum computer

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• Radio-frequency reflectometry on large gated 2-dimensional systems
• Improved Single-Shot Qubit Readout Using Twin RF-SET Charge Correlations
• Characterization of a Differential Radio-Frequency Single-Electron Transistor
• Spin-Dependent Quasiparticle Transport in Aluminum Single Electron Transistors
• Radio-frequency operation of a double-island single-electron transistor
• Direct measurement of the maximum tunnel rate in a radio frequency single electron transistor operated as a microwave mixer