Optimization of readout and gates for a superconducting fluxonium qubit

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Title
Optimization of readout and gates for a superconducting fluxonium qubit

CoPED ID
81e1c5ad-496f-4fab-98e0-82f17a1c1c25

Status
Active

Funders

Value
No funds listed.

Start Date
Sept. 20, 2020

End Date
Sept. 19, 2024

Description

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Superconducting qubits are a promising candidate for quantum computing and processing applications. Widely used in industry and academia is the transmon qubit, composed of a Josephson junction shunted by a large capacitor. These man-made atoms offer the benefit of being able to tune parameters via fabrication and offer ease of readout and control via coupling to a superconducting resonator. As the superconducting qubit community looks towards the future, a strong contender for an alternative is the fluxonium qubit, which is instead shunted by a large inductance and is resilient to charge fluctuations. As interest in the fluxonium continues to grow, the goal of this project is to first optimize readout parameters to achieve high performance measurement fidelity, and subsequently realize this experimentally. This project will be a continuation of the work I have completed during my Project B involving numerical and analytical optimization. The aim is to use the results from my Project B in order to identify the appropriate parameter regime to apply in the laboratory. Improved readout capabilities directly enable efficient characterization of the fluxonium which further improves the ability to calibrate the fluxonium gates as efficiently as possible. Thus, the future perspectives for the project will include efficient calibration of high fidelity gates and the implementation of both readout and gates in multi-qubit architectures. We ultimately want to answer the question: What is the best approach to implement high fidelity operations on fluxonium qubits? Other key learning objectives include, but are not limited to, learning how to fabricate samples for testing in the clean room and understanding the control electronics and software required to run the experiments.

Jorge Barreto SUPER_PER
Taryn Stefanski STUDENT_PER

Subjects by relevance
  1. Superconductivity
  2. Measurement
  3. Quantum computers
  4. Quantum computing

Extracted key phrases
  1. Fluxonium qubit
  2. Fluxonium gate
  3. Superconducting qubit
  4. Analytical optimization
  5. High fidelity gate
  6. Transmon qubit
  7. Qubit community
  8. Readout parameter
  9. Qubit architecture
  10. Readout capability
  11. High performance measurement fidelity
  12. High fidelity operation
  13. Project B
  14. Appropriate parameter regime
  15. Promising candidate

Related Pages

UKRI project entry

UK Project Locations