Electromagnetically Induced Superluminal Light in a 3D Transmon Device

ORAL

Abstract

Quantum interference in a three level $\Lambda $-type system can result in non-linear optical effects such as electromagnetically induced transparency/absorption (EIT/EIA), slow, and fast light. We have created a $\Lambda $ system with an effectively metastable state by dispersively coupling an Al/AlOx/Al transmon qubit (T1 $=$4 us) to a 3D Cu microwave cavity (T1$=$340ns). By probing the transmission through the cavity while pumping a qubit-cavity sideband yields a large change in the dispersion. We observe group advances of up to 10 us for Gaussian pulses propagating through the system, corresponding to a group index of -176,000.

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Authors

  • Timothy M. Sweeney

    • Lab. for Physical Sciences

  • Sergey Novikov

    • Dept. of Physics, Univ. of Maryland

  • Baladitya Suri

    • Dept. of Physics, Univ. of Maryland

  • Shavindra Premarante

    • Dept. of Physics, Univ. of Maryland

  • Jen-Hao Yeh

    • Dept. of Physics, Univ. of Maryland

  • F.C. Wellstood

    • JQI, CNAM, Dept. of Physics, Univ. of Maryland

  • B.S. Palmer

    • Lab. for Physical Sciences