1/f noise

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Table of contents

1. Introduction
2. Code description
3. Input parameters
4. Reference

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Introduction

Simulation codes for time-dependent quantum 1/f noise process in annealing and superconducting circuits. The theory is in Chapter 2 of my thesis [1].

Code description

Codes included are:

✅ spin_vector_model

✅ qubit_model

✅ CSFQ_circuit

✅ transmon_circuit (with dynamical decoupling)

✅ ibm_crosstalk

Input parameters

• tf: total anneal time

• ntraj: number of trajectories

• nd: number of fluctuators per noise decade

• dec: number of noise decade

• bmean: mean of fluctuator strength

• bvariance: variance of fluctuator strength

A schedule of DW2X annealing schedule is included. For CSFQ circuit, the default circuit parameter values (i_c, c_shunt, alpha, amp, ...) are in the scurve paper [2]. An AME quantum trajectories code of the CSFQ circuit is also included.

Reference

[1] Yip, K.W., 2021. Open-system modeling of quantum annealing: theory and applications. arXiv preprint arXiv:2107.07231.

[2] Khezri, M., Grover, J. A., Basham, J. I., Disseler, S. M., Chen, H., Novikov, S., ... & Lidar, D. A. 2021. Anneal-path correction in flux qubits. npj Quantum Information, 7(1), 1-8.