Systematic Perturbation Theory for Frequency and Lifetime Renormalization of Superconducting Qubits

ORAL

Abstract

We introduce two quantitatively consistent methods for perturbatively calculating the renormalization of both frequency and relaxation time for transmon-type superconducting qubits, relevant to recent experiments [1]. We consider a general situation where the qubit is embedded in an open linear electromagnetic environment, whose properties are determined by its Maxwell Green's function [2]. The two calculation strategies provide systematic corrections to the system poles to arbitrary order and are not limited by Hilbert space truncation.

[1] S. Mundhada, S. Shankar, A. Narla, E. Zalys-Geller, S. M. Girvin, and M. Devoret in APS Meething Abstract (2016).
[2] M. Malekakhlagh, A. Petrescu, and H. E. Tureci, Phys. Rev. A 94, 063848 (2016).

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Presenters

  • Moein Malekakhlagh

    Department of Electrical Engineering, Princeton University, Electrical Engineering, Princeton University

Authors

  • Moein Malekakhlagh

    Department of Electrical Engineering, Princeton University, Electrical Engineering, Princeton University

  • Alexandru Petrescu

    Department of Electrical Engineering, Princeton University, Electrical Engineering, Princeton University

  • Hakan Tureci

    Department of Electrical Engineering, Princeton University, Electrical Engineering, Princeton University, Electrical Engineering, Princeton Univ