Tuning atom-field interaction via phase shaping

Y. -T. Cheng, C. -H. Chien, K. M. Hsieh, Y. H. Huang, P. Y. Wen, W. -J. Lin, Y. Lu, F. Aziz, C. -P. Lee, K. -T. Lin, C. Y. Chen, J. C. Chen, C. -S. Chuu, A. F. Kockum, G. -D. Lin, Y. H. Lin*, I. -C. Hoi*

*Corresponding author for this work

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

2 Citations (Scopus)
44 Downloads (CityUHK Scholars)

Abstract

A coherent electromagnetic field can be described by its amplitude, frequency, and phase. All these properties can influence the interaction between the field and an atom. Here we demonstrate the phase shaping of microwaves that are scattered by a superconducting artificial atom coupled to the end of a semi-infinite one-dimensional transmission line. In particular, we input a weak exponentially rising pulse with phase modulation to a transmon qubit. We observe that atom-field interaction can be tuned from a nearly full interaction (interaction efficiency, i.e., amount of the field energy interacting with the atom, of 94.5 %) to effectively no interaction (interaction efficiency of 3.5 %).

© 2024 American Physical Society
Original languageEnglish
Article number023705
JournalPhysical Review A
Volume109
Issue number2
Online published7 Feb 2024
DOIs
Publication statusPublished - Feb 2024

Funding

I.-C.H. and J.C.C. thank I. A. Yu for fruitful discussions. I.-C.H. acknowledges financial support from City University of Hong Kong through the start-up Project No. 9610569 and from the Research Grants Council of Hong Kong (Grant No. 11312322). A.F.K. acknowledges support from the Swedish Research Council (Grant No. 2019-03696), from the Swedish Foundation for Strategic Research, and from the Knut and Alice Wallenberg Foundation through the Wallenberg Centre for Quantum Technology (WACQT). K.-T.L. and G.-D.L. acknowledge support from NSTC of Taiwan under Projects No. 111-2112-M-002-037 and No. 111-2811-M-002 -087. P.Y.W. acknowledges support from NSTC, Taiwan, under Grant No. 110-2112-M-194-006-MY3.

Publisher's Copyright Statement

  • COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: Cheng, Y.-T., Chien, C.-H., Hsieh, K. M., Huang, Y. H., Wen, P. Y., Lin, W.-J., Lu, Y., Aziz, F., Lee, C.-P., Lin, K.-T., Chen, C. Y., Chen, J. C., Chuu, C.-S., Kockum, A. F., Lin, G.-D., Lin, Y. H., & Hoi, I.-C. (2024). Tuning atom-field interaction via phase shaping. Physical Review A, 109(2), Article 023705. https://doi.org/10.1103/PhysRevA.109.023705 The copyright of this article is owned by American Physical Society.

RGC Funding Information

  • RGC-funded

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