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A European consortium was launched today with the goal of scaling silicon quantum technologies. Named QLSI (Quantum Large-Scale Integration with Silicon), this four-year EU project, coordinated by CEA-Leti, will lay the foundation for the EU’s industrial-scale implementation of semiconductor quantum processors and position Europe as a global leader in quantum computing. The project will focus on demonstrating that spin qubits are the leading platform for scaling to very large numbers of quantum bits, or qubits, the building blocks of quantum information processing.
The QLSI consortium features a dynamic team with a complementary skillset, bringing together experienced academics with deep knowledge of in silicon nanostructures and spin qubits, RTOs with silicon CMOS technology expertise, major international businesses in the semiconductor and computing industries, as well as Europe’s thriving quantum start-up sector. Each member brings state-of-the-art expertise in their area required to address the challenges of building a scalable quantum computer.
The partners have already realized many of the key advances in the field of silicon quantum. For instance, QuTech, a collaboration between TU Delft and TNO, implemented quantum algorithms in this platform and offers the first online open access quantum computer hosting a 2-qubit quantum chip based on silicon spins through Quantum Inspire.
The QLSI consortium will take this principle to the next level with the demonstration of a 16-qubit chip, and will also make an 8-qubit chip available for external use through the Quantum Inspire open-access quantum cloud environment. What makes silicon so attractive? Owing to their experience, the partners have already quantified promising single qubit performance: small size, high fidelity, fast read-out and manipulation. Working with silicon, the next step is to leverage the vast infrastructure of the global semiconductor industry.
While classical computers use information as bits that are either off or on, represented by ‘0’ or ‘1’, quantum systems utilize superposition and entanglement of particles, such as electrons or photons, or other quanta. In superposition, these qubits are at 0 and 1 states simultaneously. When qubits get entangled, a primary feature of quantum mechanics, a change in one of them causes the other to also change.
Harnessing these features will make it possible to use quantum effects to make major advances in computing, sensing and metrology, simulations, cryptography, and telecommunications. Society’s benefits from quantum computing ultimately will include ultra-precise sensors for use in medicine, quantum-based communications, and hacking-proof digital data. In the long term, quantum computing has the potential to solve computational problems that would take current supercomputers longer than the age of the universe. These systems will also be able to recognize patterns and train artificial intelligence systems.
“Europe is well-positioned to take the EU’s spin-qubit R&D to the next level, in what is a high-stakes competition among advanced technological countries,” said Maud Vinet, CEA-Leti’s quantum hardware program manager, who will lead the four-year, €15 million ($17.7 million) project. “The QLSI project ramps up a dedicated effort across all leading European groups in the field of spin qubits to develop complete processor systems that eventually will reach the thousands of qubits expected as a first step to show the potential for universal, error-corrected quantum computing.”
Within the QLSI project QuTech will upgrade Quantum Inspire to include an 8-qubit spin quantum chip to demonstrate a high-quality quantum processor in a semi-industrial environment.
QLSI will pursue four essential results:
The project is a recent addition to the EU’s ambitious Quantum Flagship program, a 10-year, €1 billion ($1.18 billion) R&D initiative launched in 2018. It is a coherent set of research and innovation projects selected through a thorough peer-review process. The overall goal is to consolidate and expand European scientific leadership and excellence in quantum computing, to kick-start a competitive European industry in quantum technologies and to make Europe a dynamic and attractive region for innovative research, business and investments in this field.
CEA – development and fabrication of spin qubits; TU Delft/QuTech – materials development and multi-qubit control; CNRS – demonstration of spin qubits; IMEC – significant technological developments aiming at spin qubits; TNO/QuTech – Spin qubit full stack demonstrator; Fraunhofer institutes IPMS & IAF – significant technological developments aiming at spin qubits; Univ. of Copenhagen – demonstration and characterization of spin qubits; UCL – physics experience and charge-and-spin properties of Si nanostructures; FORSCHUNGSZENTRUM JULICH / FZJ - demonstration of spin qubits; Univ. of Basel – physics experience and charge-and-spin properties of Si nanostructures; Univ. of Twente – physics experience and charge-and-spin properties of Si nanostructures; Hitachi – physics experience and charge-and-spin properties of Si nanostructures; Univ. of Konstanz – theoretical simulations and modelling of spin qubits and their properties; IHP (Leibniz-Institut) – development of Si-based quantum materials for spin qubits; ATOS – development of quantum validation platform; STMicrolectronics – development of quantum validation platform; Infineon Dresden – development and fabrication of spin qubits; Quantum Motion – design and validation of spin qubit devices and architectures; Soitec – significant technological developments aiming at spin qubits.
QuTech (www.qutech.nl) is a mission-driven research institute of Delft University of Technology (TU Delft) and the Netherlands Organisation for Applied Scientific Research (TNO).