A state-of-the-art 25-bit voltage source solution
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QDAC-II is a 24-channel high-precision low-noise voltage generator for DC and intermediate-frequency control of quantum electronics and QPUs, including gate electrodes and flux bias coils for qubits. With current sensing and AWGs on each channel, a very versatile instrument that can be used for gate-leakage detection, fast tune-up algorithms, providing stable operation points, and many more applications.
Precision Voltage Generators
QDAC-II is a high-precision, 25-bit resolution, ultra-low-noise DAC with 24 voltage channel generators with a 1 MS/s sample rate and a step size of 0.12 μ. 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.
Fast Tune-Up and Operation Point Control
Performs fast multi-dimensional gate voltage sweeps using a 300 kHz output filter. Once at your operation point, QDAC-II is switchable to an ultra-low noise DC voltage with a 10 Hz output filter and 25-bit resolution, with minimal transients.
Complete and Scalable Solution
QDAC-II offers a high-performance and versatile solution with an endless number of applications. Multiple OPX+ and QDAC units can be stacked and synchronized to operate as one advanced quantum control system.
Get the Full QDAC-II Spec Sheet
Key Features
- Ultra-low noise and ultra-stable 24-channel voltage source
- Unique low pass filter with 3 ranges that can be switched between with minimal transients: cut-off 300 KHz, cut-off 10 KHz, and cut-off 10 Hz
- 25-bit resolution in DC mode (10 Hz cut-off), 20-bit in medium bandwidth mode (10 kHz cut-off), and in high bandwidth (fast) mode (300 kHz cut-off)
- One million samples per second per channel
- Each channel has multiple standard waveform generators and an arbitrary waveform generator
- Individual high-resolution low-frequency current sensors on every channel, measuring current simultaneously on all channels
- Advanced triggering and synchronization functions between channels with sub-microsecond precision
Why Leading Experts
Worldwide Choose
Quantum Machines
Disentangling Losses in Tantalum Superconducting Circuits
“QM’s chip packaging solutions are exquisite pieces of engineering that have enhanced our resonator Q-factors to as much as 200 million. It is clearly a very highly engineered product that I’m sure will be widely adopted in the field.”
Check case study>>
PhD Student, Kevin D CrowleyHouck Lab, Princeton University
iSWAP with multiplexed readout in 10 lines of QUA code
“We were extremely surprised by theflexibilitythat OPX offers and by howmuch easier it makes ourexperiments. Moreover, OPX providesextreme speed-ups. No morefrustration due to long waiting timesfor unwanted results!”
See case study>>
Prof. Tse-Ming ChenNational Cheng Kung University, Taiwan
A partner you can trust
”QM's control electronics provide the best real-time features along with an intuitive and well-documented programming interface. At TII, we successfully controlled a 25-q chip and conducted multiplexed characterization of all qubits using QM’s OPX and Octave. What we appreciate most, however, is the QM’s unwavering support and commitment to helping us achieve our targets, even going so far as to send some of their best scientists when needed.”
Alvaro OrgazLead Quantum Computing Control, TII
Substantially reducing coding complexity and time to results
“OPX has been a powerful enabler in our lab, helping us quickly characterize the performance of our recently discovered qubits.The hardware removes time wasted in uploading and waiting during pulse programming.QUA has substantially reduced the complexity of writing quantum protocols, allowing us to code dynamical decoupling and RB sequences in just a few lines. It remarkably saves our time in optimizing the processes and visualizing the results, allowing us to focus more on understanding the physics of our new qubits.” See case study >>
Prof. Dafei JinAssociate Prof., Dep. of Physics & Astronomy, University of Notre Dame
RT Bayesian estimation for drifts mitigation and improved coherence time
“The OPX’s fast feedback and unique real-time processing capabilities were critical for our experiment.Combining these with the OPX’s intuitive programming and QM’s state-of-the-art cryogenic electronics allowed us to do something that we have dreamt of doing for years.”
See case study >>
Prof. Ferdinand KuemmethProfessor at Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, Denmark
Saved two years of development
“Developing a functional qubit control electronic system absorbs a PhD-student full time at least for two years. QM’S Quantum Orchestration Platform allowed us set up experiments for full qubit characterization in 2-3 days with an undergraduate summer school student.”
Prof. Gerhard KirchmairUniversity of Innsbruck
The QOP dramatically expedites research
“We are very pleased with the Quantum Orchestration Platform (QOP) control solution. It’s remarkably easy to use, reliable, and flexible, supporting our advanced quantum research needs. The QOP dramatically expedites our research. The Quantum Machines customer success team has been instrumental in addressing all our needs to help us to maximize the full potential of the solution. We already use two systems and strongly recommend it.”
See case study>>
Prof. Eli Levenson-FalkUniversity of Southern California
Revolutionizing spin qubit control, all in one box
“The quantum orchestration platform (QOP) platform completely changed the way we control semiconductor quantum dot spin qubits. Key qubit control schemes we previously developed individually using time-consuming hardware description languages are now easily implemented in one box.”
See case study>>
Prof. Dohum KimSeoul National University
Simplified lab workflow and faster runtimes
“Replacing three devices with one synchronized, orchestrated machine tremendously simplified lab workflow. Now our pulse sequences run in a fraction of the time of any other device combo. Plus, we can “talk” to the FPGA in human-speak, to run real-time calculations that were too complicated before! Along with the yoga-level.”
Prof. Amit FinklerWeizmann Institute of Science
This system will revolutionize our space
“The first time I was introduced to Quantum Machines, It surprised me how people were getting so excited about it. Only later did I realize, it was like explaining the value of a Laser before it existed, and all you knew are light bulbs. Today I truly believe that these systems will revolutionize our space.”
Prof. Barak DayanWeizmann Institute of Science
Why Leading Experts
Worldwide Choose
Quantum Machines
Disentangling Losses in Tantalum Superconducting Circuits
“QM’s chip packaging solutions are exquisite pieces of engineering that have enhanced our resonator Q-factors to as much as 200 million. It is clearly a very highly engineered product that I’m sure will be widely adopted in the field.”
Check case study>>
PhD Student, Kevin D CrowleyHouck Lab, Princeton University
iSWAP with multiplexed readout in 10 lines of QUA code
“We were extremely surprised by theflexibilitythat OPX offers and by howmuch easier it makes ourexperiments. Moreover, OPX providesextreme speed-ups. No morefrustration due to long waiting timesfor unwanted results!”
See case study>>
Prof. Tse-Ming ChenNational Cheng Kung University, Taiwan
A partner you can trust
”QM's control electronics provide the best real-time features along with an intuitive and well-documented programming interface. At TII, we successfully controlled a 25-q chip and conducted multiplexed characterization of all qubits using QM’s OPX and Octave. What we appreciate most, however, is the QM’s unwavering support and commitment to helping us achieve our targets, even going so far as to send some of their best scientists when needed.”
Alvaro OrgazLead Quantum Computing Control, TII
Substantially reducing coding complexity and time to results
“OPX has been a powerful enabler in our lab, helping us quickly characterize the performance of our recently discovered qubits.The hardware removes time wasted in uploading and waiting during pulse programming.QUA has substantially reduced the complexity of writing quantum protocols, allowing us to code dynamical decoupling and RB sequences in just a few lines. It remarkably saves our time in optimizing the processes and visualizing the results, allowing us to focus more on understanding the physics of our new qubits.” See case study >>
Prof. Dafei JinAssociate Prof., Dep. of Physics & Astronomy, University of Notre Dame
RT Bayesian estimation for drifts mitigation and improved coherence time
“The OPX’s fast feedback and unique real-time processing capabilities were critical for our experiment.Combining these with the OPX’s intuitive programming and QM’s state-of-the-art cryogenic electronics allowed us to do something that we have dreamt of doing for years.”
See case study >>
Prof. Ferdinand KuemmethProfessor at Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, Denmark
Saved two years of development
“Developing a functional qubit control electronic system absorbs a PhD-student full time at least for two years. QM’S Quantum Orchestration Platform allowed us set up experiments for full qubit characterization in 2-3 days with an undergraduate summer school student.”
Prof. Gerhard KirchmairUniversity of Innsbruck
The QOP dramatically expedites research
“We are very pleased with the Quantum Orchestration Platform (QOP) control solution. It’s remarkably easy to use, reliable, and flexible, supporting our advanced quantum research needs. The QOP dramatically expedites our research. The Quantum Machines customer success team has been instrumental in addressing all our needs to help us to maximize the full potential of the solution. We already use two systems and strongly recommend it.”
See case study>>
Prof. Eli Levenson-FalkUniversity of Southern California
Revolutionizing spin qubit control, all in one box
“The quantum orchestration platform (QOP) platform completely changed the way we control semiconductor quantum dot spin qubits. Key qubit control schemes we previously developed individually using time-consuming hardware description languages are now easily implemented in one box.”
See case study>>
Prof. Dohum KimSeoul National University
Simplified lab workflow and faster runtimes
“Replacing three devices with one synchronized, orchestrated machine tremendously simplified lab workflow. Now our pulse sequences run in a fraction of the time of any other device combo. Plus, we can “talk” to the FPGA in human-speak, to run real-time calculations that were too complicated before! Along with the yoga-level.”
Prof. Amit FinklerWeizmann Institute of Science
This system will revolutionize our space
“The first time I was introduced to Quantum Machines, It surprised me how people were getting so excited about it. Only later did I realize, it was like explaining the value of a Laser before it existed, and all you knew are light bulbs. Today I truly believe that these systems will revolutionize our space.”
Prof. Barak DayanWeizmann Institute of Science
Disentangling Losses in Tantalum Superconducting Circuits
iSWAP with multiplexed readout in 10 lines of QUA code
A partner you can trust
Substantially reducing coding complexity and time to results
RT Bayesian estimation for drifts mitigation and improved coherence time
Saved two years of development
The QOP dramatically expedites research
Revolutionizing spin qubit control, all in one box
Simplified lab workflow and faster runtimes
This system will revolutionize our space
Benefits
Multiple Waveforms
Each of the 24-channels has five voltage generators working in parallel: one for DC, a sine, triangle and square wave generator, and an arbitrary waveform generator (1 million points/second)
Built-in Sensitive Current Sensors
Each channel includes 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
Ultra Stable Voltage Source
Low noise floor (<20 nV/√Hz), ensuring reliable qubit operation points
Reduces Experiment Setup Costs
Built-in function generators (including AWG) and current sensors reduce the need for additional instruments
Additional Resources
Brochures
QDAC-II: Ultra-Low-Noise 24-Channel DAC
Read More
Blog
Quantum Machines Introduces QDAC-II Compact and QSwitch – Ultra-Low-Noise Quantum Electronics Solutions
Read More
Blog
QDevil, a division of Quantum Machines, Niels Bohr Institute, and KU Tech Transfer Office Honored with 2024 Technology Transfer Prize by the German Physical Society
Read More
Brochures
QDAC-II: Ultra-Low-Noise 24-Channel DAC
Read More
Blog
Quantum Machines Introduces QDAC-II Compact and QSwitch – Ultra-Low-Noise Quantum Electronics Solutions
Read More
Blog
QDevil, a division of Quantum Machines, Niels Bohr Institute, and KU Tech Transfer Office Honored with 2024 Technology Transfer Prize by the German Physical Society
Read More
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