Intel and QuTech Demonstrate Advances in Solving Quantum Interconnect Bottlenecks
May 12 2021 - 12:00PM
Business Wire
New research published in Nature highlights
progress toward quantum scalability with high-fidelity control and
programmability of silicon qubits using the Horse Ridge cryogenic
controller.
What’s New: Today, Intel and QuTech – a collaboration
between Delft University of Technology and the Netherlands
Organisation for Applied Scientific Research – published key
findings in quantum research to address the “interconnect
bottleneck” that exists between quantum chips that sit in cryogenic
dilution refrigerators and the complex room-temperature electronics
that control the qubits. The innovations were covered in Nature,
the industry-leading science journal of peer-reviewed research, and
mark an important milestone in addressing one of the biggest
challenges to quantum scalability with Intel’s cryogenic controller
chip Horse Ridge.
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A photo shows an Intel "Horse Ridge" chip
mounted on a circuit board. Horse Ridge is a cryogenic control chip
for qubits built using Intel’s 22nm FinFET Low Power technology.
(Credit: Marieke de Lorijn)
“Our research results, driven in partnership with QuTech,
quantitatively prove that our cryogenic controller, Horse Ridge,
can achieve the same high-fidelity results as room-temperature
electronics while controlling multiple silicon qubits. We also
successfully demonstrated frequency multiplexing on two qubits
using a single cable, which clears the way for simplifying the
‘wiring challenge’ in quantum computing. Together, these
innovations pave the way for fully integrating quantum control
chips with the quantum processor in the future, lifting a major
roadblock in quantum scaling.”
--Stefano Pellerano, principal engineer at Intel Labs
Why It Matters: A key bottleneck for quantum computing
lies between the quantum chip stored in low, cryogenic temperatures
in dilution refrigerator and room-temperature control electronics
that control the qubits. Getting the control electronics to operate
at high fidelity at cryogenic temperatures is key to overcoming
what is referred to as the “interconnect or wiring bottleneck.”
Intel took the first step to address this challenge when it
introduced Horse Ridge, a cryogenic control chip for qubits built
using Intel’s 22nm FinFET Low Power technology. A second generation
of the chip was introduced last year. Horse Ridge brings key
control functions for quantum computer operation into the cryogenic
refrigerator – as close as possible to the qubits themselves – to
streamline the complexity of control wiring for quantum
systems.
This latest research successfully demonstrates results from
randomized benchmarking that show a commercial CMOS-based
cryo-controller achieving coherent control of a two-qubit processor
at the same levels of fidelity (99.7%) as room-temperature
electronics. This marks a key research milestone in the field of
cryo-electronics for quantum computing.
More About the Research: Intel and QuTech successfully
demonstrated frequency multiplexing by using the same cable to
control two qubits. This is an important proof of concept because
today each qubit is individually controlled by its own cable – an
approach that is not scalable as qubit counts increase. Horse Ridge
aims to solve that limitation by leveraging multiplexing to reduce
the number of radio frequency cables needed for qubit control.
The research team demonstrated the programmability of the
controller by running a two-qubit algorithm called the
Deutsch–Jozsa algorithm, which is more efficient on a quantum
computer than on a traditional computer.
The research results, verified by randomized benchmarking,
validate the original promise of Horse Ridge as a highly integrated
and scalable solution for simplifying quantum control electronics,
and prove that the technology can be directly applied to
multi-qubit algorithms and noisy intermediate-scale quantum
devices.
What’s Next: With continuing research in this field, it
may be possible to fully integrate the controller chip and the
qubits on the same die – they are all fabricated in silicon – or
package, paving the path for quantum scalability.
More Context: Quantum Computing at Intel (Press Kit) |
Intel Labs (Press Kit)
About Intel
Intel (Nasdaq: INTC) is an industry leader, creating
world-changing technology that enables global progress and enriches
lives. Inspired by Moore’s Law, we continuously work to advance the
design and manufacturing of semiconductors to help address our
customers’ greatest challenges. By embedding intelligence in the
cloud, network, edge and every kind of computing device, we unleash
the potential of data to transform business and society for the
better. To learn more about Intel’s innovations, go to
newsroom.intel.com and intel.com.
© Intel Corporation. Intel, the Intel logo and other Intel marks
are trademarks of Intel Corporation or its subsidiaries. Other
names and brands may be claimed as the property of others.
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Supriya Venkat 1-503-320-8024 supriya.venkat@intel.com
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