Performance of Superconducting Resonators Suspended on SiN Membranes
- URL: http://arxiv.org/abs/2405.01784v1
- Date: Thu, 2 May 2024 23:53:05 GMT
- Title: Performance of Superconducting Resonators Suspended on SiN Membranes
- Authors: Trevor Chistolini, Kyunghoon Lee, Archan Banerjee, Mohammed Alghadeer, Christian Jünger, M. Virginia P. Altoé, Chengyu Song, Sudi Chen, Feng Wang, David I. Santiago, Irfan Siddiqi,
- Abstract summary: Correlated errors in superconducting circuits due to nonequilibrium quasiparticles are a notable concern in efforts to achieve fault tolerant quantum computing.
We create superconducting coplanar waveguide resonators entirely atop a thin ($sim$110 nm) SiN layer, where the bulk Si originally supporting it has been etched away.
We compare these membrane resonators to on-substrate resonators on the same chip, finding similar internal quality factors at single photon levels.
- Score: 7.626965397124747
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Correlated errors in superconducting circuits due to nonequilibrium quasiparticles are a notable concern in efforts to achieve fault tolerant quantum computing. The propagation of quasiparticles causing these correlated errors can potentially be mediated by phonons in the substrate. Therefore, methods that decouple devices from the substrate are possible solutions, such as isolating devices atop SiN membranes. In this work, we validate the compatibility of SiN membrane technology with high quality superconducting circuits, adding the technique to the community's fabrication toolbox. We do so by fabricating superconducting coplanar waveguide resonators entirely atop a thin ($\sim$110 nm) SiN layer, where the bulk Si originally supporting it has been etched away, achieving a suspended membrane where the shortest length to its thickness yields an aspect ratio of approximately $7.4 \times 10^3$. We compare these membrane resonators to on-substrate resonators on the same chip, finding similar internal quality factors $\sim$$10^5$ at single photon levels. Furthermore, we confirm that these membranes do not adversely affect the resonator thermalization rate. With these important benchmarks validated, this technique can be extended to qubits.
Related papers
- Site-Controlled Purcell-Induced Bright Single Photon Emitters in Hexagonal Boron Nitride [62.170141783047974]
Single photon emitters hosted in hexagonal boron nitride (hBN) are essential building blocks for quantum photonic technologies that operate at room temperature.
We experimentally demonstrate large-area arrays of plasmonic nanoresonators for Purcell-induced site-controlled SPEs.
Our results offer arrays of bright, heterogeneously integrated quantum light sources, paving the way for robust and scalable quantum information systems.
arXiv Detail & Related papers (2024-05-03T23:02:30Z) - Hydrogen crystals reduce dissipation in superconducting resonators [0.0]
Internal quality factors of superconducting resonators made of granular aluminum can be improved by coating them with micrometric films of para-hydrogen molecular crystals.
We attribute the average measured dissipation to absorption of stray terahertz radiation at the crystal-resonator interface.
The hydrogen crystal does not introduce additional losses, which is promising for embedding impurities to couple to superconducting thin-film devices in hybrid quantum architectures.
arXiv Detail & Related papers (2023-06-07T02:37:19Z) - Identification and Mitigation of Conducting Package Losses for Quantum
Superconducting Devices [1.03905835096574]
We present a series of measurements and simulations showing that conducting losses in the packaging of our superconducting resonator devices affect the maximum achievable internal quality factors (Qi)
By utilizing resonators with different widths and gaps, different volumes of the stored electromagnetic energy were sampled thus affecting Qi.
arXiv Detail & Related papers (2023-04-17T21:51:47Z) - High-kinetic inductance NbN films for high-quality compact
superconducting resonators [0.4577805448875385]
Niobium nitride (NbN) is a promising material for quantum technology applications.
Resonators based on NbN thin films present a one-photon internal quality factor above 10$5$.
Our work proves the versatility of niobium nitride high-kinetic inductance resonators.
arXiv Detail & Related papers (2023-02-27T16:29:17Z) - Performance of high impedance resonators in dirty dielectric
environments [0.0]
Internal quality factors of high-impedance resonators exceed $103$ in all investigated oxide configurations.
These experiments pave the way for large-scale, spin-based quantum computers.
arXiv Detail & Related papers (2023-02-13T12:06:56Z) - TOF-SIMS Analysis of Decoherence Sources in Nb Superconducting
Resonators [48.7576911714538]
Superconducting qubits have emerged as a potentially foundational platform technology.
Material quality and interfacial structures continue to curb device performance.
Two-level system defects in the thin film and adjacent regions introduce noise and dissipate electromagnetic energy.
arXiv Detail & Related papers (2021-08-30T22:22:47Z) - Probing defect densities at the edges and inside Josephson junctions of
superconducting qubits [58.720142291102135]
Tunneling defects in disordered materials form spurious two-level systems.
For superconducting qubits, defects in tunnel barriers of submicrometer-sized Josephson junctions couple strongest to the qubit.
We investigate whether defects appear predominantly at the edges or deep within the amorphous tunnel barrier of a junction.
arXiv Detail & Related papers (2021-08-14T15:01:35Z) - Near-Field Terahertz Nanoscopy of Coplanar Microwave Resonators [61.035185179008224]
Superconducting quantum circuits are one of the leading quantum computing platforms.
To advance superconducting quantum computing to a point of practical importance, it is critical to identify and address material imperfections that lead to decoherence.
Here, we use terahertz Scanning Near-field Optical Microscopy to probe the local dielectric properties and carrier concentrations of wet-etched aluminum resonators on silicon.
arXiv Detail & Related papers (2021-06-24T11:06:34Z) - A low-loss ferrite circulator as a tunable chiral quantum system [108.66477491099887]
We demonstrate a low-loss waveguide circulator constructed with single-crystalline yttrium iron garnet (YIG) in a 3D cavity.
We show the coherent coupling of its chiral internal modes with integrated superconducting niobium cavities.
We also probe experimentally the effective non-Hermitian dynamics of this system and its effective non-reciprocal eigenmodes.
arXiv Detail & Related papers (2021-06-21T17:34:02Z) - Quantum Sensors for Microscopic Tunneling Systems [58.720142291102135]
tunneling Two-Level-Systems (TLS) are important for micro-fabricated quantum devices such as superconducting qubits.
We present a method to characterize individual TLS in virtually arbitrary materials deposited as thin-films.
Our approach opens avenues for quantum material spectroscopy to investigate the structure of tunneling defects.
arXiv Detail & Related papers (2020-11-29T09:57:50Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.