Connecting to Qdac 2 Array by Qdevil in Python

Instrument Card

QDAC-II is the next generation of the successful QDAC from QDevil. It has all the outstanding features from its predecessor but is even more versatile and with superior performance. QDAC-II is a high-precision ultra-low-noise computer controlled DAC with 24 voltage generators, operating at a sample rate of 1MS/s – a thousand times faster than its predecessor. It is designed for DC and intermediate-frequency control of quantum devices, including, for example, gate electrodes and flux bias coils in qubits, but is a very versatile instrument that can be used for many other purposes. Each of the 24 channels has five voltage generators working in parallel: One for DC, a sine generator, a triangle generator, a square wave generator, and an arbitrary waveform generator (1 million points/second). Additionally, each channel is equipped with a DC current sensor with a resolution down to a few tens of pA, typically used for gate leakage detection and with sample rates up to 3 kHz.

Device Specification: here

Manufacturer card: QDEVIL

Founded in 2016, QDevil is an international quantum technology company focused on developing and manufacturing auxiliary electronics and specialized components, operating from mK to room temperature. The mission is to accelerate research and development in quantum electronics labs. To fulfill the mission QDevil helps customers around the world by supplying world-class auxiliary electronics.

• Headquarters: COPENHAGEN, DENMARK
• Yearly Revenue (millions, USD): 2
• Vendor Website: here

Demo: Measure a solar panel IV curve with a Keithley 2400

Connect to the Qdac 2 Array in Python

Read our guide for turning Python scripts into Flojoy nodes.

Flojoy

PROTOCOLS > SCPI

📄 IDN

Query a device's identity through the universal *IDN? SCPI command.

📄 MEASURE VOLTAGE

Query an instrument's measured output voltage, such as a DMM or power supply.

📄 SCPI WRITE

Write a SCPI command to a connected bench-top instrument and return the result.

QCodes Community

To connect to a Qdac 2 Array Power Supplies using Qcodes Community, you can use the following code:

from qcodes.instrument_drivers.QDevil.QDAC2 import QDac2_Array

# Create an instance of the QDac2_Array driver
qdac_array = QDac2_Array(controller, listeners)

# Connect to the Qdac 2 Array Power Supplies
qdac_array.sync()

# Perform operations on the Qdac 2 Array Power Supplies
# ...

# Close the connection to the Qdac 2 Array Power Supplies
qdac_array.close()

In the code above, you need to replace controller and listeners with the actual instances of the QDac2 instruments that you want to connect to. The sync() method is used to synchronize the array of QDac2 instruments. You can then perform various operations on the Qdac 2 Array Power Supplies using the qdac_array object. Finally, you can close the connection using the close() method.