Deterministic Loading of Microwaves onto an Artificial Atom Using a Time-Reversed Waveform
Journal article, 2022
Loading quantum information deterministically onto a quantum node is an important step toward a quantum network. Here, we demonstrate that coherent-state microwave photons with an optimal temporal waveform can be efficiently loaded onto a single superconducting artificial atom in a semi-infinite one-dimensional (1D) transmission-line waveguide. Using a weak coherent state (the number of photons (N) contained in the pulse ≪1) with an exponentially rising waveform, whose time constant matches the decoherence time of the artificial atom, we demonstrate a loading efficiency of 94.2% ± 0.7% from 1D semifree space to the artificial atom. The high loading efficiency is due to time-reversal symmetry: the overlap between the incoming wave and the time-reversed emitted wave is up to 97.1% ± 0.4%. Our results open up promising applications in realizing quantum networks based on waveguide quantum electrodynamics.
Quantum network
superconducting artificial atom
waveguide quantum electrodynamics
photon loading
Author
Wei Ju Lin
National Tsing Hua University
Yong Lu
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
University of Stuttgart
P. Y. Wen
National Chung Cheng University
Yu Ting Cheng
National Tsing Hua University
Ching Ping Lee
National Tsing Hua University
K. T. Lin
National Taiwan University
Kuan Hsun Chiang
National Central University
Ming Che Hsieh
National Tsing Hua University
Ching Yeh Chen
National Tsing Hua University
Chin Hsun Chien
National Tsing Hua University
Jia Jhan Lin
National Tsing Hua University
Jeng Chung Chen
National Tsing Hua University
Yen Hsiang Lin
National Tsing Hua University
Chih Sung Chuu
National Tsing Hua University
F. Nori
University of Michigan
RIKEN
Anton Frisk Kockum
Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics
G. D. Lin
National Center for Theoretical Sciences Taiwan
National Taiwan University
Hon Hai Research Institute
Per Delsing
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Io Chun Hoi
National Tsing Hua University
City University of Hong Kong
Nano Letters
1530-6984 (ISSN) 1530-6992 (eISSN)
Vol. 22 20 8137-8142Giant atoms - a new regime in quantum optics
Swedish Research Council (VR) (2019-03696), 2020-01-01 -- 2023-12-31.
Quantum Sound: Generating and manipulating phonons at the quantum level
Swedish Research Council (VR) (2015-00152), 2016-01-01 -- 2025-12-31.
Subject Categories
Computer Engineering
Atom and Molecular Physics and Optics
Other Physics Topics
DOI
10.1021/acs.nanolett.2c02578
PubMed
36200986