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

Journal
Nano letters
Journal Volume
22
Journal Issue
20
Date Issued
2022-10-26
Author(s)
Lin, Wei-Ju
Lu, Yong
Wen, Ping Yi
Cheng, Yu-Ting
Lee, Ching-Ping
Lin, Kuan Ting
Chiang, Kuan Hsun
Hsieh, Ming Che
Chen, Ching-Yeh
Chien, Chin-Hsun
Lin, Jia Jhan
Chen, Jeng-Chung
Lin, Yen Hsiang
Chuu, Chih-Sung
Nori, Franco
Frisk Kockum, Anton
GUIN-DAR LIN  
Delsing, Per
Hoi, Io-Chun
DOI
10.1021/acs.nanolett.2c02578
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/626550
URL
http://arxiv.org/abs/2012.15084v1
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.
Subjects
Quantum network; photon loading; superconducting artificial atom; waveguide quantum electrodynamics; Quantum Physics; Quantum Physics
Publisher
AMER CHEMICAL SOC
Type
journal article

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