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Classification and reconstruction of optical quantum states with deep neural networks
Shahnawaz Ahmed, Carlos Sánchez Muñoz, Franco Nori +1
We apply deep-neural-network-based techniques to quantum state classification and reconstruction. We demonstrate high classification accuracies and reconstruction fidelities, even…
Synthesizing electromagnetically induced transparency without a control field in waveguide QED using small and giant atoms
Andreas Ask, Yao-Lung L. Fang, Anton Frisk Kockum
The absorption of photons in a three-level atom can be controlled and manipulated by applying a coherent drive at one of the atomic transitions. The situation where the absorption…
Tunable Chiral Bound States with Giant Atoms
Xin Wang, Tao Liu, Anton Frisk Kockum +2
We propose tunable chiral bound states in a system composed of superconducting giant atoms and a Josephson photonic-crystal waveguide (PCW), with no analog in other quantum setups.…
Engineering the Level Structure of a Giant Artificial Atom in Waveguide Quantum Electrodynamics
A. M. Vadiraj, Andreas Ask, T. G. McConkey +4
Engineering light-matter interactions at the quantum level has been central to the pursuit of quantum optics for decades. Traditionally, this has been done by coupling emitters, ty…
Quantum optics with giant atoms -- the first five years
Anton Frisk Kockum
In quantum optics, it is common to assume that atoms can be approximated as point-like compared to the wavelength of the light they interact with. However, recent advances in exper…
Deep Q-learning decoder for depolarizing noise on the toric code
David Fitzek, Mattias Eliasson, Anton Frisk Kockum +1
We present an AI-based decoding agent for quantum error correction of depolarizing noise on the toric code. The agent is trained using deep reinforcement learning (DRL), where an a…