Multiplexed readout of ultrasensitive bolometers

• URL: http://arxiv.org/abs/2411.12782v1
• Date: Tue, 19 Nov 2024 09:29:30 GMT
• Title: Multiplexed readout of ultrasensitive bolometers
• Authors: Priyank Singh, András Gunyhó, Heikki Suominen, Giacomo Catto, Florian Blanchet, Qi-Ming Chen, Arman Alizadeh, Aarne Keränen, Jian Ma, Timm Mörstedt, Wei Liu, Mikko Möttonen,
• Abstract summary: Ultrasensitive calorimeters have been proposed as a resource-efficient solution for multiplexed qubit readout in superconducting quantum processors. We present the design, fabrication, and operation of three SNS sensors with frequency-multiplexed input and probe circuits on a single chip. These experiments pave the way for multiplexed bolometric characterization and calorimetric readout of multiple qubits, a promising step in minimizing related resources.
• Score: 4.002736062514059
• License:
• Abstract: Recently, ultrasensitive calorimeters have been proposed as a resource-efficient solution for multiplexed qubit readout in superconducting large-scale quantum processors. However, experiments demonstrating frequency multiplexing of these superconductor-normal conductor-superconductor (SNS) sensors are coarse. To this end, we present the design, fabrication, and operation of three SNS sensors with frequency-multiplexed input and probe circuits, all on a single chip. These devices have their probe frequencies in the range \SI{150}{\mega\hertz} -- \SI{200}{\mega\hertz}, which is well detuned from the heater frequencies of \SI{4.4}{\giga\hertz} -- \SI{7.6}{\giga\hertz} compatible with typical readout frequencies of superconducting qubits. Importantly, we show on-demand triggering of both individual and multiple low-noise SNS bolometers with very low cross talk. These experiments pave the way for multiplexed bolometric characterization and calorimetric readout of multiple qubits, a promising step in minimizing related resources such as the number of readout lines and microwave isolators in large-scale superconducting quantum computers.

Related papers

• In situ Qubit Frequency Tuning Circuit for Scalable Superconducting Quantum Computing: Scheme and Experiment [23.955959205144353]
  We propose a scalable scheme to tune the qubit frequency by using in situ superconducting circuit. Our work paves the way for large-scale control of superconducting quantum processor.
  arXiv  Detail & Related papers  (2024-07-31T08:02:20Z)
• Two-tone spectroscopy for the detection of two-level systems in superconducting qubits [108.40985826142428]
  Two-level systems (TLS) of unclear physical origin are a major contributor to decoherence in superconducting qubits. We propose a novel method that requires only a microwave drive and dispersive readout, and thus also works fixed-frequency qubits.
  arXiv  Detail & Related papers  (2024-04-22T09:53:00Z)
• Ultrafast Superconducting Qubit Readout with the Quarton Coupler [1.4571671739637337]
  State-of-the-art readout is based on a dispersive cross-Kerr coupling between a qubit and its readout resonator. We present a new scheme that uses the quarton coupler to facilitate a large (greater than 250 MHz) cross-Kerr between a transmon qubit and its readout resonator. Full master equation simulations show a 5 ns readout time with greater than 99% readout and QND fidelity.
  arXiv  Detail & Related papers  (2024-02-24T00:39:35Z)
• Design and simulation of a transmon qubit chip for Axion detection [103.69390312201169]
  Device based on superconducting qubits has been successfully applied in detecting few-GHz single photons via Quantum Non-Demolition measurement (QND) In this study, we present Qub-IT's status towards the realization of its first superconducting qubit device.
  arXiv  Detail & Related papers  (2023-10-08T17:11:42Z)
• Multi-module microwave assembly for fast read-out and charge noise characterization of silicon quantum dots [0.6819010383838326]
  We develop a superconductor-semiconductor multi-module microwave assembly to demonstrate charge state readout at the state-of-the-art. The modular microwave circuitry presented here can be directly utilized in conjunction with other quantum device to improve the readout performance.
  arXiv  Detail & Related papers  (2023-04-26T10:52:34Z)
• First design of a superconducting qubit for the QUB-IT experiment [50.591267188664666]
  The goal of the QUB-IT project is to realize an itinerant single-photon counter exploiting Quantum Non Demolition (QND) measurements and entangled qubits. We present the design and simulation of the first superconducting device consisting of a transmon qubit coupled to a resonator using Qiskit-Metal.
  arXiv  Detail & Related papers  (2022-07-18T07:05:10Z)
• Probing quantum devices with radio-frequency reflectometry [68.48453061559003]
  Radio-frequency reflectometry can measure changes in impedance even when their duration is extremely short, down to a microsecond or less. Examples of reflectometry experiments include projective measurements of qubits and Majorana devices for quantum computing. This book aims to introduce the readers to the technique, to review the advances to date and to motivate new experiments in fast quantum device dynamics.
  arXiv  Detail & Related papers  (2022-02-21T20:14:21Z)
• Initial Design of a W-band Superconducting Kinetic Inductance Qubit (Kineticon) [0.0]
  We describe a kinetic inductance qubit operating at W-band frequencies with a nonlinear nanowire section. operating the qubits at higher frequencies may relax the dilution refrigerator temperature requirements.
  arXiv  Detail & Related papers  (2020-12-15T22:40:32Z)
• 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)
• Bolometer operating at the threshold for circuit quantum electrodynamics [0.0]
  We experimentally demonstrate a bolometer with a noise equivalent power of $30, rmzW/sqrtrmHz$ on par with the current record. The improvements stem from the utilization of a graphene monolayer as the active material with extremely low specific heat.
  arXiv  Detail & Related papers  (2020-08-11T11:13:04Z)
• Waveguide Bandgap Engineering with an Array of Superconducting Qubits [101.18253437732933]
  We experimentally study a metamaterial made of eight superconducting transmon qubits with local frequency control. We observe the formation of super- and subradiant states, as well as the emergence of a polaritonic bandgap. The circuit of this work extends experiments with one and two qubits towards a full-blown quantum metamaterial.
  arXiv  Detail & Related papers  (2020-06-05T09:27:53Z)

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.