Deterministic Loading of Microwaves onto an Artificial Atom Using a Time-Reversed Waveform

Wei-Ju Lin, Yong Lu*, Ping Yi Wen, Yu-Ting Cheng, Ching-Ping Lee, Kuan Ting Lin, Kuan Hsun Chiang, Ming Che Hsieh, Ching-Yeh Chen, Chin-Hsun Chien, Jia Jhan Lin, Jeng-Chung Chen, Yen Hsiang Lin, Chih-Sung Chuu, Franco Nori, Anton Frisk Kockum, Guin Dar Lin, Per Delsing, Io-Chun Hoi*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

8 Citations (Scopus)
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Abstract

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.
Original languageEnglish
Pages (from-to)8137–8142
JournalNano Letters
Volume22
Issue number20
Online published6 Oct 2022
DOIs
Publication statusPublished - 26 Oct 2022

Research Keywords

  • photon loading
  • Quantum network
  • superconducting artificial atom
  • waveguide quantum electrodynamics

Publisher's Copyright Statement

  • This full text is made available under CC-BY-NC-ND 4.0. https://creativecommons.org/licenses/by-nc-nd/4.0/

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