2026-05-15 早稲田大学
＜関連情報＞
- https://www.waseda.jp/inst/research/news/84417
- https://journals.aps.org/prl/abstract/10.1103/234l-q12q
捕捉された原子と移動する光との間の単発条件付き変位ゲート Single-Shot Conditional Displacement Gate between a Trapped Atom and Traveling Light
Seigo Kikura, Hayato Goto, Fumiya Hanamura, and Takao Aoki
Physical Review Letters Published: 12 May, 2026
DOI: https://doi.org/10.1103/234l-q12q
Abstract
We propose a single-shot conditional displacement gate between a trapped atom as the control qubit and a traveling light pulse as the target oscillator, mediated by an optical cavity. Classical driving of the atom synchronized with the light reflection off the cavity realizes the single-shot implementation of the crucial gate for the universal control of hybrid systems. We further derive a concise gate model incorporating cavity loss and atomic decay, facilitating the evaluation and optimization of the gate performance. This proposal establishes a key practical tool for coherently linking stationary atoms with itinerant light, a capability essential for realizing hybrid quantum information processing.
