On-chip microwave filters for high-impedance resonators with gate-defined quantum dots
arXiv:2005.05411 · doi:10.1103/PhysRevApplied.14.034025
Abstract
Circuit quantum electrodynamics (QED) employs superconducting microwave resonators as quantum buses. In circuit QED with semiconductor quantum-dot-based qubits, increasing the resonator impedance is desirable as it enhances the coupling to the typically small charge dipole moment of these qubits. However, the gate electrodes necessary to form quantum dots in the vicinity of a resonator inadvertently lead to a parasitic port through which microwave photons can leak, thereby reducing the quality factor of the resonator. This is particularly the case for high-impedance resonators, as the ratio of their total capacitance over the parasitic port capacitance is smaller, leading to larger microwave leakage than for 50- resonators. Here, we introduce an implementation of on-chip filters to suppress the microwave leakage. The filters comprise a high-kinetic-inductance nanowire inductor and a thin-film capacitor. The filter has a small footprint and can be placed close to the resonator, confining microwaves to a small area of the chip. The inductance and capacitance of the filter elements can be varied over a wider range of values than their typical spiral inductor and interdigitated capacitor counterparts. We demonstrate that the total linewidth of a 6.4 GHz and approximately 3-k resonator can be improved down to 540 kHz using these filters.
References in corpus (23)
- Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
- Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
- Entanglement-based single-shot detection of a single magnon with a superconducting qubit
- State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
- A Coherent Spin-Photon Interface in Silicon
- Strong spin-photon coupling in silicon
- Coplanar Waveguide Resonators for Circuit Quantum Electrodynamics
- Strong Coupling of a Single Electron in Silicon to a Microwave Photon
- High Kinetic Inductance Superconducting Nanowire Resonators for Circuit QED in a Magnetic Field
- Coherent spin-qubit photon coupling
- Long-Range Microwave Mediated Interactions Between Electron Spins
- Rapid high-fidelity gate-based spin read-out in silicon
- Strong coupling of a spin qubit to a superconducting stripline cavity
- Circuit Quantum Electrodynamics Architecture for Gate-Defined Quantum Dots in Silicon
- A spin quantum bit with ferromagnetic contacts for circuit QED
- Optimized cavity-mediated dispersive two-qubit gates between spin qubits
- Microwave photon-mediated interactions between semiconductor qubits
- All-Microwave Control and Dispersive Readout of Gate-Defined Quantum Dot Qubits in Circuit Quantum Electrodynamics
- Coupling a single electron spin to a microwave resonator: Controlling transverse and longitudinal couplings
- Coherent microwave photon mediated coupling between a semiconductor and a superconductor qubit
- Coherent long-distance spin-qubit-transmon coupling
- Highly coherent spin states in carbon nanotubes coupled to cavity photons
- Symmetric reflection line resonator for semiconductor circuit quantum electrodynamics
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- High-efficiency microwave photodetection by cavity coupled double dots with single cavity-photon sensitivity
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- Dispersive detection of single microwave photons with quantum dots