Measurements

To perform measurements several tools are available.

Scan functions

For basic scanning the following functions are available:

`qtt.measurements.scans.scan1D`(station, scanjob)	Simple 1D scan.
`qtt.measurements.scans.scan2D`(station, scanjob)	Make a 2D scan and create dictionary to store on disk.
`qtt.measurements.scans.scan2Dfast`(station, ...)	Make a 2D scan and create qcodes dataset to store on disk.
`qtt.measurements.scans.scan2Dturbo`(station, ...)	Perform a very fast 2d scan by varying two physical gates with the AWG.

For more advanced measurements, write your own data acquisition loop.

Plotting data

For plotting a qcodes.DataSet one can use

qtt.data.plot_dataset(dataset[, ...])

Plot a dataset to matplotlib figure window

To automatically copy a plotted figure to PowerPoint one can add a button:

qtt.utilities.tools.create_figure_ppt_callback([...])

Create a button on a matplotlib figure to copy data to PowerPoint slide.

Parameter viewer

The ParameterViewer widget allow to view and set numeric parameters of instruments. To start the ParameterViewer pass the instruments to be monitored as the first argument.

parameter_viewer = qtt.gui.parameterviewer.ParameterViewer([gates, keithley1], start_timer=True)
parameter_viewer.setGeometry(100,100, 400, 800)

qtt.gui.parameterviewer.ParameterViewer(...)

Simple class to show qcodes parameters

VideoMode

The videomode tool can create fast charge stability diagrams using a 1D or 2D sawtooth wave. For more information see the code or the example notebooks.

qtt.measurements.videomode.VideoMode(station)

Controls the videomode tool.

Data browser

The data browser can be used to inspect recorded data.

qtt.gui.dataviewer.DataViewer([...])

Live plotting

Live plotting is done using a qcodes.QtPlot window. The window can be setup with:

qtt.gui.live_plotting.setupMeasurementWindows([...])

Create liveplot window and parameter widget (optional)

Named gates

The VirtualDAC object can translate gate names into the proper channels of a DAC (or multiple DACs). This is convenient because gate names are easier to work with than a number. Also when a device is controlled with multiple DACs.

qtt.instrument_drivers.gates.VirtualDAC(...)

This class maps the dacs of IVVI('s) to named gates.

Measurement control

A simple GUI to abort running measurements without interfering with the instrument communication.

qtt.gui.live_plotting.MeasurementControl([...])

Simple control for running measurements

Virtual gates

qtt.instrument_drivers.virtual_gates.virtual_gates

A virtual gate instrument to control linear combinations of gates.

Storing the system state

To store the system state one can store the station.snapshot(). In order to restore the state, it is often sufficient for spin-qubits to restore the DAC values.

Copying data to Powerpoint

To copy a dataset or a figure window to Powerpoint, including the scan metadata one can use:

`qtt.utilities.tools.addPPT_dataset`(dataset)	Add slide based on dataset to current active Powerpoint presentation.
`qtt.utilities.tools.addPPTslide`([title, ...])	Add slide to current active Powerpoint presentation.