Spectroscopic signatures of localization with interacting photons in superconducting qubits

• Autores: P. Roushan, C. Neill, J. Tangpanitanon
• Localización: Science, ISSN 0036-8075, Vol. 358, Nº 6367, 2017, págs. 1175-1179
• Idioma: inglés
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• Resumen

  • Quantized eigenenergies and their associated wave functions provide extensive information for predicting the physics of quantum many-body systems. Using a chain of nine superconducting qubits, we implement a technique for resolving the energy levels of interacting photons. We benchmark this method by capturing the main features of the intricate energy spectrum predicted for two-dimensional electrons in a magnetic field—the Hofstadter butterfly. We introduce disorder to study the statistics of the energy levels of the system as it undergoes the transition from a thermalized to a localized phase. Our work introduces a many-body spectroscopy technique to study quantum phases of matter.