Measurements of a Quantum Dot with an Impedance-Matching On-Chip LC Resonator at GHz Frequencies

Abstract

We report the realization of a bonded-bridge on-chip superconducting coil and its use in impedance-matching a highly ohmic quantum dot (QD) to a $3\mathrm{GHz}$ measurement setup. The coil, modeled as a lumped-element $LC$ resonator, is more compact and has a wider bandwidth than resonators based on coplanar transmission lines (e.g. $\lambda /4$ impedance transformers and stub tuners) at potentially better signal-to-noise ratios. In particular for measurements of radiation emitted by the device, such as shot noise, the 50$\times$ larger bandwidth reduces the time to acquire the spectral density. The resonance frequency, close to 3.25 GHz, is three times higher than that of the one previously reported wire-bonded coil. As a proof of principle, we fabricated an $LC$ circuit that achieves impedance-matching to a $\sim 15\mathrm{k\Omega }$ load and validate it with a load defined by a carbon nanotube QD of which we measure the shot noise in the Coulomb blockade regime.

arXiv comment7 pages, 6 figures

References in corpus (14)

• Fluxonium: single Cooper pair circuit free of charge offsets
• Strong Coupling Cavity QED with Gate-Defined Double Quantum Dots Enabled by a High Impedance Resonator
• Noise of a Quantum-Dot System in the Cotunneling Regime
• Shot Noise Detection on a Carbon Nanotube Quantum Dot
• Ultra-sensitive and Wide Bandwidth Thermal Measurements of Graphene at Low Temperatures
• Clean carbon nanotubes coupled to superconducting impedance-matching circuits
• Tunable microwave impedance matching to a high impedance source using a Josephson metamaterial
• Shot noise spectroscopy on a semiconductor quantum dot in the elastic and inelastic cotunneling regimes
• Stamping single wall nanotubes for circuit quantum electrodynamics
• Transport through single-wall metallic carbon nanotubes in the cotunneling regime
• Detecting single-electron tunneling involving virtual processes in real time
• Realization of GHz-frequency impedance matching circuits for nano-scale devices
• Shot noise of a quantum dot measured with GHz stub impedance matching
• On-Chip Matching Networks for Radio-Frequency Single-Electron-Transistors

Cited by in corpus (11)

• Microwave-to-optical transduction using a mechanical supermode for coupling piezoelectric and optomechanical resonators
• Antibunched photons emitted by a dc biased Josephson junction
• Rapid microwave-only characterization and readout of quantum dots using multiplexed gigahertz-frequency resonators
• Full parity phase diagram of a proximitized nanowire island
• Dispersive sensing in hybrid InAs/Al nanowires
• Nonequilibrium charge transport through Falicov-Kimball structures connected to metallic leads
• Blocking-state influence on shot noise and conductance in quantum dots
• Quantum Dot Source-Drain Transport Response at Microwave Frequencies
• Flip-chip-based fast inductive parity readout of a planar superconducting island
• Gate voltage dependence of noise distribution in radio-frequency reflectometry in gallium arsenide quantum dots
• Piezoelectric optomechanical approaches for efficient quantum microwave-to-optical signal transduction: the need for co-design