Print Email Facebook Twitter Experimentally simulating the dynamics of quantum light and matter at deep-strong coupling Title Experimentally simulating the dynamics of quantum light and matter at deep-strong coupling Author Langford, N.K. (TU Delft QCD/DiCarlo Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Sagastizabal, R.E. (TU Delft QCD/DiCarlo Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Kounalakis, M. (TU Delft QN/Steele Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Dickel, C. (TU Delft QN/Steele Lab; TU Delft QCD/DiCarlo Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Bruno, A. (TU Delft QCD/DiCarlo Lab; TU Delft QN/Quantum Transport; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Lüthi, F. (TU Delft QCD/DiCarlo Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Thoen, David (TU Delft Tera-Hertz Sensing; TU Delft QN/van der Zant Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Endo, A. (TU Delft Tera-Hertz Sensing; TU Delft QN/Quantum Nanoscience; Kavli institute of nanoscience Delft) DiCarlo, L. (TU Delft QCD/DiCarlo Lab; TU Delft QN/DiCarlo Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Department QN/Quantum Nanoscience Date 2017-12-01 Abstract The quantum Rabi model describing the fundamental interaction between light and matter is a cornerstone of quantum physics. It predicts exotic phenomena like quantum phase transitions and ground-state entanglement in ultrastrong and deep-strong coupling regimes, where coupling strengths are comparable to or larger than subsystem energies. Demonstrating dynamics remains an outstanding challenge, the few experiments reaching these regimes being limited to spectroscopy. Here, we employ a circuit quantum electrodynamics chip with moderate coupling between a resonator and transmon qubit to realise accurate digital quantum simulation of deep-strong coupling dynamics. We advance the state of the art in solid-state digital quantum simulation by using up to 90 second-order Trotter steps and probing both subsystems in a combined Hilbert space dimension of 80, demonstrating characteristic Schrödinger-cat-like entanglement and large photon build-up. Our approach will enable exploration of extreme coupling regimes and quantum phase transitions, and demonstrates a clear first step towards larger complexities such as in the Dicke model. To reference this document use: http://resolver.tudelft.nl/uuid:7dbcc3b6-f15e-4523-948c-4dc40889a741 DOI https://doi.org/10.1038/s41467-017-01061-x ISSN 2041-1723 Source Nature Communications, 8 (1) Part of collection Institutional Repository Document type journal article Rights © 2017 N.K. Langford, R.E. Sagastizabal, M. Kounalakis, C. Dickel, A. Bruno, F. Lüthi, David Thoen, A. Endo, L. DiCarlo Files PDF s41467_017_01061_x.pdf 3.11 MB Close viewer /islandora/object/uuid:7dbcc3b6-f15e-4523-948c-4dc40889a741/datastream/OBJ/view