qiskit-community / qiskit-metal

Quantum Hardware Design. Open-source project for engineers and scientists to design superconducting quantum devices with ease.
https://qiskit-community.github.io/qiskit-metal/
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Possible Typo in Charge Dispersion #851

Closed ferrispnugraha closed 1 year ago

ferrispnugraha commented 1 year ago

Information

Hi everyone! This is my first time creating an issue in Qiskit Metal repo.

What is the current behavior?

The time T1 obtained from LOM (inspired from Capacitance and LOM.ipynb) differs from manual calculation. It appears that we may need to have np.sqrt(2/np.pi) instead for the charge dispersion for transmon in qiskit_metal\analyses\quantization\lumped_capacitive.py as compared to Eqs. (2.5) in paper Charge-insensitive qubit design derived from the Cooper pair box, PhysRevA.76.042319

Screenshot 2022-08-24 181932

Screenshot 2022-08-24 181011

I really appreciate any feedbacks or comments!

Steps to reproduce the problem

What is the expected behavior?

Suggested solutions