Research progress and future prospects for semiconductor quantum bits

哲夫 小寺, Tetsuo Kodera

Tetsuo Kodera

Silicon quantum computers are still in the early stages of development. It is expected that mature semiconductor technology will be applied in the future, and large-scale integration will progress. In this paper, after explaining the operating principles of silicon qubit devices, the current status of research and development on increasing the fidelity and integration of qubits is introduced. Future challenges and prospects are also discussed.

Dafei Jin

A. Beveratos, Isabelle Robert-Philip

For the past fifteen years, single semiconductor quantum dots, often referred to as solid-state artificial atoms, have been at the forefront of various research direction lines for experimental quantum information science, in particular in the development of practical sources of quantum states of light. Here we review the research to date, on the tailoring of the emission properties from single quantum dots producing single photons, indistinguishable single photons and entangled photon pairs. Finally, the progress and future prospects for applications of single dots in quantum information processing is considered.

Yongchao Zhang, Xiaoxu Liu, Tieli Zhang +3 more

Due to the limitation of standard quantum limit (SQL), traditional laser interferometry based micro angle attitude measurement technology cannot further improve its measurement accuracy. Applying quantum weak value measurement technology to micro angle measurement will greatly improve its measurement accuracy. This article introduces the basic principle of quantum weak value measurement, and introduces the research progress in micro bit angle/displacement measurement using quantum weak value measurement technology in recent years. The future application trend of quantum weak measurement technology in micro angle is analyzed and prospected.

Tomohiro Otsuka