CEA and Quobly Report Simultaneous, Microsecond Qubit-Readout Solution with 10x Power-Use Reduction

Breakthrough in Silicon Qubit Readout

CEA-Leti, in collaboration with Quobly, CEA-List, and CEA-Irig, has announced a significant advancement in quantum computing technology. thay’ve developed a novel readout system using FD-SOI CMOS technology that enables the simultaneous microsecond readout of numerous quantum devices. This breakthrough promises to revolutionize the scalability and efficiency of silicon-based quantum computers.

Power Efficiency and Scalability Revolutionized

This innovative system achieves a tenfold reduction in readout power consumption and a twofold reduction in footprint compared to existing methods.By utilizing a multiplexing strategy, a single amplifier can measure multiple qubits simultaneously. This novel approach addresses the critical challenge of scaling up qubit readout in a power-efficient and compact manner.

Quadrature-Amplitude Modulation for Enhanced Qubit Control

CEA-Leti researchers demonstrated the system’s capability by achieving 4- and 16-point quadrature-amplitude modulation (QAM).This complex modulation scheme, previously unattained in quantum readout systems, allows for more precise control and manipulation of individual qubits. “This is the first time that this complex a modulation scheme as QAM has been used to address the simultaneous readout of several qubits,” explains Franck Badets, research director of CEA-Leti’s Silicon Components Department. “The associated improvements in power efficiency and footprint per qubit for a single amplifier, compared to frequency division multiplexing access state-of-the-art, demonstrated with OOK modulations, open luminous perspectives for larger-scale qubit arrays.”

Silicon Qubits: A Promising Path to scalable Quantum Computing

“The silicon qubit is a promising candidate for large-scale, fault-tolerant quantum computing due to its small footprint, higher operating temperature and possible compatibility with industrial CMOS processes,” notes Quentin Schmidt, lead author of the paper. To overcome the limitations of current cryogenic electronics, this new technology allows for the simultaneous read-out of thousands of silicon qubits without the need for bulky inductors, effectively addressing the wiring bottleneck and scaling-up limitations.

Collaboration Paves the Way for Future Innovations

This breakthrough was achieved through a collaborative effort between CEA-Leti, Quobly, CEA-List, and CEA-Irig, leveraging their diverse expertise. CEA-List provides crucial guidance for software compatibility, while CEA-IRIG offers a state-of-the-art cryogenic platform for experimentation. This partnership highlights the potential for continued progress in silicon qubit systems.

Call to Action

The development of this innovative readout system represents a significant leap forward in the field of quantum computing. It paves the way for the realization of powerful, scalable, and energy-efficient quantum computers, potentially revolutionizing fields such as medicine, materials science, and artificial intelligence. Stay tuned for further advancements in this exciting field.

What are the key advantages of the novel readout system developed by Dr. Hart and Dr. Foster over existing methods?

Archyde Interview: A Quantum Leap in silicon Qubit Readout

Archyde’s correspondent caught up with Dr. Angela Hart, principal Investigator at Quobly, and Dr. rotations J. Foster, Senior Researcher at CEA-Leti, to discuss their groundbreaking work on a new readout system for silicon qubits.

Archyde: Can you briefly explain the meaning of this breakthrough in quantum computing?

Dr.Angela Hart: Indeed, our collaborative effort has yielded a critically important advancement in quantum computing technology. we’ve developed a novel readout system that enables the simultaneous, power-efficient, and compact measurement of numerous quantum devices using FD-SOI CMOS technology.

Archyde: How does this system differ from existing methods and what advantages does it offer?

Dr. Harper foster: This innovative system offers two key advantages over existing methods. first, it achieves a tenfold reduction in readout power consumption and a twofold reduction in footprint. Second, it enables the concurrent measurement of multiple qubits using a single amplifier, tackling the challenge of scaling up qubit readout in a power-efficient and compact manner.

archyde: Can you tell us more about the quadrature-amplitude modulation (QAM) technique used in this system?

Dr. Angela Hart: Absolutely. We demonstrated the system’s capability by achieving 4- and 16-point QAM,which is a complex modulation scheme previously unattained in quantum readout systems. This allows for more precise control and manipulation of individual qubits, enhancing the overall performance of the quantum computer.

Archyde: Why are silicon qubits a promising path for large-scale, fault-tolerant quantum computing?

Dr. Harper Foster: Silicon qubits offer several advantages over other qubit implementations. They have a small footprint,higher operating temperature,and are potentially compatible with industrial CMOS processes. This makes them an ideal candidate for scaling up to large, fault-tolerant quantum computers.

Archyde: How has this collaboration between CEA-Leti,Quobly,CEA-List,and CEA-Irig contributed to this success?

Dr. Angela Hart: Each partner brought their unique expertise to the table, leading to a truly interdisciplinary approach. CEA-Leti provided the crucial hardware and fabrication expertise, while quobly focused on the software aspects. CEA-list offered guidance on software compatibility, and CEA-IRIG supplied a state-of-the-art cryogenic platform for experimentation.

Archyde: looking ahead, what do you see as the next major milestones in this field?

Dr.Harper Foster: We believe that the next major milestone will be the exhibition of our system’s capability to simultaneously read-out thousands of silicon qubits. This will truly pave the way for the realization of large-scale, fault-tolerant quantum computers.

Dr. Angela Hart and Dr. Harper Foster’s groundbreaking work promises to revolutionize the efficiency and scalability of silicon-based quantum computers, promising profound applications in fields such as medicine, materials science, and artificial intelligence.