Charge sensing in carbon nanotube quantum dots on microsecond timescales

Abstract

We report fast, simultaneous charge sensing and transport measurements of gate-defined carbon nanotube quantum dots. Aluminum radio frequency single electron transistors (rf-SETs) capacitively coupled to the nanotube dot provide single-electron charge sensing on microsecond timescales. Simultaneously, rf reflectometry allows fast measurement of transport through the nanotube dot. Charge stability diagrams for the nanotube dot in the Coulomb blockade regime show extended Coulomb diamonds into the high-bias regime, as well as even-odd filling effects, revealed in charge sensing data.

4 pages, 4 figures

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Cited by in corpus (25)

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• Charge and spin state readout of a double quantum dot coupled to a resonator
• Relaxation and Dephasing in a Two-electron 13C Nanotube Double Quantum Dot
• Frequency Multiplexing for Readout of Spin Qubits
• Bends In Nanotubes Allow Electric Spin Control and Coupling
• Measuring the complex admittance of a carbon nanotube double quantum dot
• Single Carbon Nanotube Transistor at GHz Frequency
• Carbon nanotubes for coherent spintronic devices
• Majorana qubits in topological insulator nanoribbon architecture
• Dynamically controlled charge sensing of a few-electron silicon quantum dot
• Radio-frequency methods for Majorana-based quantum devices: fast charge sensing and phase diagram mapping
• Single-electron charge sensing in self-assembled quantum dots
• Highly sensitive and broadband carbon nanotube radio-frequency single-electron transistor
• Current and Shot Noise Measurements in a Carbon Nanotube-Based Spin Diode
• Real Time Electron Tunneling and Pulse Spectroscopy in Carbon Nanotube Quantum Dots
• Transport in coupled graphene-nanotube quantum devices
• A Non-Demolition Single Spin Meter
• Dephasing and Hyperfine Interaction in Carbon Nanotubes Double Quantum Dots: Disordered Case
• Nonperiodic echoes from quantum mushroom billiard hats
• Back action of graphene charge detectors on graphene and carbon nanotube quantum dots
• Metastability and quantum coherence-assisted sensing in interacting parallel quantum dots
• Detection of charge states of an InAs nanowire triple quantum dot with an integrated nanowire charge sensor
• Radio-frequency characterization of a supercurrent transistor made from a carbon nanotube