A proposed buried nanomagnet (BNM) realizing highspeed/low-variability silicon spin qubit operation, inspired by buried wiring technology, could pave the way to practical large-scale quantum computers with silicon.
Abstract:
“We propose a buried nanomagnet (BNM) realizing highspeed/low-variability silicon spin qubit operation, inspired by buried wiring technology, for the first time. High-speed quantum-gate operation results from large slanting magnetic-field generated by the BNM disposed quite close to a spin qubit, and low-variation of fidelity thanks to the self-aligned fabrication process. Employing TCAD-based simulation, we demonstrate that the BNM realizes 10 times faster Rabi oscillation (faster spin-flip) than previous works and >99% fidelity under certain process variations. Also, the proposed BNM arrangement is implementable for error-correctable large-scale quantum computers employing a 2D-latticed qubit layout. This technology paves the way to practical large-scale quantum computers with silicon.”
Find technical paper link here. Presented at the 2021 Symposium on VLSI Technology in June 2021.
S. Iizuka et al., “Buried nanomagnet realizing high-speed/low-variability silicon spin qubits: implementable in error-correctable large-scale quantum computers,” 2021 Symposium on VLSI Technology, 2021, pp. 1-2.
While terms often are used interchangeably, they are very different technologies with different challenges.
The industry is gaining ground in understanding how aging affects reliability, but more variables make it harder to fix.
Key pivot and innovation points in semiconductor manufacturing.
Tools become more specific for Si/SiGe stacks, 3D NAND, and bonded wafer pairs.
Thinner photoresist layers, line roughness, and stochastic defects add new problems for the angstrom generation of chips.
Less precision equals lower power, but standards are required to make this work.
Open-source processor cores are beginning to show up in heterogeneous SoCs and packages.
While terms often are used interchangeably, they are very different technologies with different challenges.
New applications require a deep understanding of the tradeoffs for different types of DRAM.
Open source by itself doesn’t guarantee security. It still comes down to the fundamentals of design.
How customization, complexity, and geopolitical tensions are upending the global status quo.
127 startups raise $2.6B; data center connectivity, quantum computing, and batteries draw big funding.
The industry is gaining ground in understanding how aging affects reliability, but more variables make it harder to fix.
Leave a Reply