Single-Shot Conditional Displacement Gate between a Trapped Atom and Traveling Light
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.
Fields of Study & Subjects
Quantum Information and Cryptography
Mechanical and Optical Resonators
Quantum optics and atomic interactions
Publication details
- Journal / source
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Volume
- 136
- Issue
- 19
- Pages
- 190801–190801
- Publication date
- 17 April 2026
- Language
- EN