Bulletin of the American Physical Society
APS March Meeting 2015
Volume 60, Number 1
Monday–Friday, March 2–6, 2015; San Antonio, Texas
Session L39: Superconducting Circuits and Quantum Simulation
8:00 AM–11:00 AM,
Wednesday, March 4, 2015
Sponsoring Unit: GQI
Chair: Yu Chen, Google Inc.
Abstract ID: BAPS.2015.MAR.L39.12
Abstract: L39.00012 : Perturbative scanning probe microscopy on a Kagome lattice of superconducting microwave resonators
10:12 AM–10:24 AM
Andy C.Y. Li
Microwave photons confined to a lattice of coupled resonators, each coupled to its own superconducting qubit have been predicted to exhibit matter like quantum phases. Realizing such a lattice-based quantum simulator presents a daunting experimental challenge; as such, new tools and measurement techniques are a necessary precursor. Here, we present measurements of the internal mode structure of microwave photons on a 49-site Kagome lattice of capacitively coupled coplanar waveguide resonators without qubits. By scanning a probe with a sapphire tip over the surface of a single lattice site, the resonant frequency was detuned, thus forming a local defect in the lattice. This perturbation resulted in measurable shifts in the lattice spectrum, which were used to extract the mode weights at the perturbed site. By perturbing each lattice site it was possible to reconstruct a complete map of different normal mode weights within the entire lattice. Additionally we present experimental evidence of a frustrated flat band that arises from the Kagome lattice geometry.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2015.MAR.L39.12
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