Revolution Unveiled: Semiconductor Chip Integrates Thousands Of Atomic Qubits
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MIT and MITRE Corporation have unveiled a groundbreaking hardware platform capable of integrating thousands of interconnected qubits onto custom circuits. This new Quantum System on Chip (QSoC) architecture allows for precise tuning and control of dense qubit arrays. Additionally, multiple chips can be connected via an optical network, paving the way for the creation of a large-scale quantum communication network.
Key Developments in Quantum Chip Technology
The integration of thousands of atomic qubits on a semiconductor chip marks a significant milestone. This advancement lays the groundwork for developing extensive quantum communication networks.
The QSoC architecture, made from diamond nitrogen-vacancy centers (a type of artificial atom), permits precise tuning of qubits across 11 frequency channels. This innovation introduces a new "entanglement multiplexing" protocol for large-scale quantum computing.
Manufacturing and Integration Process
To construct the QSoC, the team developed a process to transfer diamond nitrogen-vacancy center "microchips" onto a CMOS (complementary metal-oxide-semiconductor) backplane. They began by creating an array of diamond microchips from a solid diamond piece and designing nanoscale optical antennas to efficiently collect photons emitted by these qubits.
The chips were designed and fabricated in a semiconductor foundry. Post-processing was performed in a cleanroom to add micro-scale slots matching the diamond microchip array.
The team used a lock-and-release process to integrate the two layers. They locked the diamond microchips into the slots on the CMOS chip. When the bulk diamond was horizontally released, the microchips remained in place due to the weak binding force between the diamond microchips and the diamond surface.
Scaling and Performance
The team successfully transferred a 500-micron by 500-micron area containing 1,024 diamond nano-antenna arrays. They can further scale the system using larger diamond arrays and CMOS chips. Notably, as the number of qubits increases, the actual voltage required for frequency adjustment decreases. The group exhibited a device with over 4,000 qubits that was fully operational using this approach. It is possible to tune these qubits to the same frequency without affecting their spin or optical characteristics.In order to connect digital modeling with experimental findings, the group additionally created a digital twin model. By using this technique, they are more equipped to understand the underlying reasons of the observed events. And this can help them decide how best to utilize the architecture.
Conclusion
A scalable quantum computing hardware design that integrates millions of qubits and connects devices via optical networks was unveiled by MITRE and MIT. This discovery highlights the transformational potential and quick advancements of quantum technology. Working along with top semiconductor firms, XRS offers a vast array of chips and in-depth knowledge of semiconductors. We maintain our support for new product development as technology advances.
