Sam Wolski SamWolski

PhD candidate, hybrid quantum systems hardware

SamWolski / extract_pdf_images.sh

Created February 5, 2024 18:37

Extract images from a pdf directly

	## Provided by poppler, which can be installed through macports
	## From https://apple.stackexchange.com/a/445704
	pdfimages -all input.pdf output

SamWolski / text2wkt.py

Created May 19, 2023 18:36

Convert text to WKT (shapely) polygons using arbitrary local font

	'''
	Convert text in any installed font to the WKT format.

	Requires inkscape.

	Does not currently work for characters with disjoint top-level islands (eg "=",
	double quotes, capital Xi, etc.)
	'''

	import json

SamWolski / install_qm_m2.sh

Created May 1, 2023 21:49

Install Qiskit-Metal on Apple Silicon

	# Specify the env will be emulating x86
	CONDA_SUBDIR=osx-64 conda create -n <env_name> python=3.10
	# Activate env
	conda activate <env_name>
	# Set env to fetch x86 packages
	conda config --env --set subdir osx-64
	# Install qiskit metal
	pip install qiskit-metal
	# Install just the notebook component of jupyter
	# Don't install the full 'jupyter' package which will lead to qt conflicts

SamWolski / qutip_serialization.py

Created August 17, 2022 18:30

Qutip object serialization

	import msgpack
	import msgpack_numpy
	import pandas as pd
	import qutip
	from scipy.sparse import csr_matrix

	def serialize_csr(arr):
	## Switch to coo format
	coo = arr.tocoo()
	## Separate into the components we need to reconstruct it

SamWolski / qutip4_feedback.py

Created August 10, 2022 18:01

Qutip 4 feedback solver

	## From https://github.com/qutip/qutip/issues/1571#issuecomment-859873615

	times = [0, ...]
	# Liouvillians for parts you have control over
	control_liouvillians = [qutip.liouvillian(h) for h in control_hamiltonians]
	# The time-dependent Hamiltonian for stuff you're not controlling
	base_hamiltonian = qutip.QobjEvo([H0, [H1, time_dependence], ...])
	# Turn it into a Liouvillian once, so we don't repeat the cost
	base = qutip.liouvillian(base_hamiltonian, collapse_operators)
	state = ...

SamWolski / mpl_pdf_metadata.py

Created August 17, 2021 09:46

Add custom metadata to matplotlib pdfs

	"""
	Write metadata to pdf files with no warnings.
	Useful for provenance, and in this way we can suppress warnings for end users of a larger application
	"""

	from matplotlib.backends.backend_pdf import PdfPages
	import matplotlib.pyplot as plt
	import numpy as np
	import warnings

SamWolski / generic_logging.py

Created April 1, 2021 02:10

Quickly configure a python logger

	from datetime import datetime
	import logging
	import os
	import sys

	def quick_config(logger,
	console_log_level=logging.INFO, file_log_level=logging.DEBUG,
	console_fmt='[%(asctime)s] %(message)s',
	console_datefmt='%y-%m-%d %H:%M:%S',
	log_file_name=None,

SamWolski / check_macos_darkmode.py

Last active March 30, 2021 09:43

Check if Dark Mode is being used in macOS, using only python stdlib

	import subprocess

	def check_appearance():
	"""Checks DARK (True)/LIGHT(False) mode of macos.
	https://stackoverflow.com/a/65357166"""
	cmd = 'defaults read -g AppleInterfaceStyle'
	p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
	stderr=subprocess.PIPE, shell=True)
	return bool(p.communicate()[0])

SamWolski / instrument_connect_pyvisa_labber.py

Last active January 27, 2021 06:08

Instrument interaction via pyVISA and/or Labber API

	import pyvisa
	visa_rm = pyvisa.ResourceManager()
	## Access at the address may require enabling/configuring the interface on the instrument (S)FP
	pxi_vna_addr = 'TCPIP0::<HOSTNAME>::hislip_PXI0_CHASSIS1_SLOT10_INDEX0::INSTR'
	inst_vna = visa_rm.open_resource(pxi_vna_addr)
	inst_vna.write('SYST:PRES')
	inst_vna.close()
	## No need to close the RM as it is not connected to anything unless told to

	import Labber