Theory and experiment for silicon quantum computing.

Malcolm S. Carroll

Jun Yoneda

Sheng-Tan Huang, Ying-Jie Jiang, Shao‐Yun Fang +1 more

With the announcement of the most advanced silicon spin quantum-bit (qubit) chip by Intel, silicon-based quantum circuit manufacturing technology has shown the superior potential to realize quantum computing to other technologies because of the mature semiconductor manufacturing technologies and the compatibility with electronics. Due to the bottleneck in scalability caused by interconnections in silicon-based quantum circuits, crossbar architectures serve as one of the most promising solutions for circuitry implementation. This paper proposes the first satisfiability modulo theories (SMT) formulation to optimally solve the layout synthesis problem by simultaneously performing scheduling, mapping, and routing for silicon-based quantum systems with a specific crossbar architecture. The experiments demonstrate that the proposed method can effectively generate layout synthesis results with minimal usage of swap and shuttle gates within the shortest circuit depths, and the solutions greatly outperform those derived from a state-of-the-art work.

Takahiro Mori

Stephanie Simmons

There is a worldwide race to build a computer which exploits the counterintuitive principles of quantum mechanics. Silicon is one of the most promising platforms for emerging quantum information technologies for two reasons: one, it possesses many of the key desirable criteria for low-error quantum information processing, and two, the microelectronics industry has decades of experience with producing ultrapure silicon and nanoscale silicon devices, which makes silicon-based quantum devices attractive for future commercial integration. This paper reviews a selection of silicon-based quantum computer design proposals, their technological requirements, and explores recent experimental progress towards their realisation.

M.M.I M. Aisar, Shukor Sanim Mohd Fauzi, Hanif Baharin +4 more

The purpose of this study was to perform a preliminary investigation on the performance between a high-performance silicon computer and a quantum computer in terms of programming control statements. The study hypothesizes that the quantum computer would outperform the silicon computer in terms of processing performance. There were three types of experimental performance analysis scenarios conducted under the context of basic programming statements which are the ' for loop ', ' while ', and, ' if else ' control statements. To obtain the average of the completion times, the experiments were repeated five times. The obtained results suggest that the silicon computers outperformed the quantum processing capabilities.