Related papers: Parametric amplification via superconducting contacts in a Ka band niobium pillbox cavity

Parametric amplification via superconducting contacts in a Ka band niobium pillbox cavity

URL: http://arxiv.org/abs/2208.11681v2
Date: Mon, 3 Oct 2022 13:20:44 GMT
Title: Parametric amplification via superconducting contacts in a Ka band niobium pillbox cavity
Authors: Valerio Gilles, Danielius Banys, Mark A. McCulloch, Lucio Piccirillo, Thomas Sweetnam
Abstract summary: Superconducting parametric amplifiers are commonly fabricated using planar transmission lines with a non-linear inductance provided by either Josephson junctions or the intrinsic kinetic inductance of the thin film. Banys et al. reported non-linear behaviour in a niobium pillbox cavity, hypothesising that below Tc, the pair iris-bulk resonator would act as a superconducting contact surface. This work investigates this effect further by applying Keysight Technologies' Advanced Design System to simulate the cavity.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Superconducting parametric amplifiers are commonly fabricated using planar transmission lines with a non-linear inductance provided by either Josephson junctions or the intrinsic kinetic inductance of the thin film. However, Banys et al. [1] reported non-linear behaviour in a niobium pillbox cavity, hypothesising that below Tc, the pair iris-bulk resonator would act as a superconducting contact surface exploiting a Josephson-like non-linearity. This work investigates this effect further by applying Keysight Technologies' Advanced Design System (ADS) to simulate the cavity using an equivalent circuit model that includes a user defined Josephson inductance component. The simulations show that for a resonance centred at nu0 = 30.649 GHz, when two tones (pump and signal) are injected into the cavity, mixing and parametric gain occur. The maximum achievable gain is explored when the resonator is taken to its bifurcation energy. These results are compared to cryogenic measurements where the pump and signal are provided by a Vector Network Analyzer.

Related papers

Kinetic Inductance Parametric Converter [0.0]
Parametric converters are used for amplifying and squeezing microwave signals in quantum computing and sensing. In current devices, the strong localized nonlinearity of the Josephson Junction limits the amplification and squeezing. A weak distributed nonlinearity can provide higher gain and dynamic range, when implemented as a kinetic inductance (KI) nanowire of a dirty superconductor.
arXiv Detail & Related papers (2024-07-19T05:56:08Z)
Investigating pump harmonics generation in a SNAIL-based Traveling Wave Parametric Amplifier [0.0]
Traveling Wave Parametric Amplifiers (TWPAs) are extensively employed in experiments involving weak microwave signals for their highly desirable quantum-limited and broadband characteristics. However, TWPAs' broadband nature comes with the disadvantage of admitting the activation of spurious nonlinear processes, such as harmonics generation, that can potentially degrade amplification performance. Here we experimentally investigate a Josephson TWPA device with SNAIL (Superconducting Asymmetric Inductive Element)-based unit cells focusing on the amplification behaviour along with the generation of second and third harmonics of the pump.
arXiv Detail & Related papers (2024-05-30T14:35:23Z)
Josephson bifurcation readout: beyond the monochromatic approximation [49.1574468325115]
We analyze properties of bifurcation quantum detectors based on weakly nonlinear superconducting resonance circuits. This circuit can serve as an efficient detector of the quantum state of superconducting qubits.
arXiv Detail & Related papers (2024-05-25T22:22:37Z)
Latched Detection of Zeptojoule Spin Echoes with a Kinetic Inductance Parametric Oscillator [0.0]
We operate a detector based on a superconducting microwave resonator. The device indicates the absorption of low-power microwave wavepackets by transitioning to a self-oscillating state. We achieve a latched-readout of the spin signal with an amplitude that is five hundred times greater than the underlying spin echoes.
arXiv Detail & Related papers (2023-11-07T03:55:15Z)
Fragmented superconductivity in the Hubbard model as solitons in Ginzburg-Landau theory [58.720142291102135]
Superconductivity and charge density waves are observed in close vicinity in strongly correlated materials. We investigate the nature of such an intertwined state of matter stabilized in the phase diagram of the elementary $t$-$tprime$-$U$ Hubbard model. We provide conclusive evidence that the macroscopic wave functions of the superconducting fragments are well-described by soliton solutions of a Ginzburg-Landau equation.
arXiv Detail & Related papers (2023-07-21T18:00:07Z)
Machine Learning Extreme Acoustic Non-reciprocity in a Linear Waveguide with Multiple Nonlinear Asymmetric Gates [68.8204255655161]
This work is a study of acoustic non-reciprocity exhibited by a passive one-dimensional linear waveguide incorporating two local strongly nonlinear, asymmetric gates. The maximum transmissibility reaches as much as 40%, and the transmitted energy from upstream to downstream varies up to nine orders of magnitude, depending on the direction of wave propagation.
arXiv Detail & Related papers (2023-02-02T17:28:04Z)
Directional Josephson traveling-wave parametric amplifier via non-Hermitian topology [58.720142291102135]
Low-noise microwave amplification is crucial for detecting weak signals in quantum technologies and radio astronomy. Current amplifiers do not satisfy all these requirements, severely limiting the scalability of superconducting quantum devices. Here, we demonstrate the feasibility of building a near-ideal quantum amplifier using a homogeneous Josephson junction array and the non-trivial topology of its dynamics.
arXiv Detail & Related papers (2022-07-27T18:07:20Z)
Superconducting coupler with exponentially large on-off ratio [68.8204255655161]
Tunable two-qubit couplers offer an avenue to mitigate errors in multiqubit superconducting quantum processors. Most couplers operate in a narrow frequency band and target specific couplings, such as the spurious $ZZ$ interaction. We introduce a superconducting coupler that alleviates these limitations by suppressing all two-qubit interactions with an exponentially large on-off ratio.
arXiv Detail & Related papers (2021-07-21T03:03:13Z)
Designing Kerr Interactions for Quantum Information Processing via Counterrotating Terms of Asymmetric Josephson-Junction Loops [68.8204255655161]
static cavity nonlinearities typically limit the performance of bosonic quantum error-correcting codes. Treating the nonlinearity as a perturbation, we derive effective Hamiltonians using the Schrieffer-Wolff transformation. Results show that a cubic interaction allows to increase the effective rates of both linear and nonlinear operations.
arXiv Detail & Related papers (2021-07-14T15:11:05Z)
Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction [0.0]
We present a large variety of qubits all stemming from the same circuit but with drastically different characteristic energy scales. The use of a geometric inductor results in high precision of the inductive and capacitive energy as guaranteed by top-down lithography.
arXiv Detail & Related papers (2021-06-10T16:09:36Z)

This list is automatically generated from the titles and abstracts of the papers in this site.