Towards Bell-state stabilization using the Very Small Logical Qubit (VSLQ) device: Part II
ORAL
Abstract
We report our experimental progress towards the stabilization of an arbitrary Bell-state. We first describe our circuit implementation of the Very Small Logical Qubit [1] that substantially reduces operational complexity by reducing the number of RF drive lines and is fully compatible with the stabilization scheme. The circuit is composed of two superconducting qubits coupled through a small Josephson junction with a time-dependent flux bias and two low-Q resonators each coupled to the qubits. The experiment requires calibration of the static circuit parameters under DC flux biasing and mitigation of the flux cross-talks. Next, we demonstrate the generation of various sideband interactions required for the stabilization scheme by modulating the coupler using RF drives with appropriate frequencies, amplitudes, and phases. Finally, we compare our experimental results with the simulation and discuss the scope for further improvements. Our results pave the way towards the realization of the passively protected arbitrary logical qubit states from single-qubit error channels [1]. [1] E. Kapit. Phys. Rev. Lett.116, 150501 (2016)
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Presenters
Tanay Roy
University of Chicago, The James Franck Institute and Department of Physics, The University of Chicago
Authors
Tanay Roy
University of Chicago, The James Franck Institute and Department of Physics, The University of Chicago
Yao Lu
University of Chicago, The James Franck Institute and Department of Physics, The University of Chicago
Eliot Kapit
Colorado Sch of Mines, Physics, Colorado School of Mines, Department of Physics, Colorado School of Mines
David I Schuster
University of Chicago, Physics, University of Chicago, Department of Physics and the James Franck Institute, University of Chicago, The James Franck Institute and Department of Physics, University of Chicago, The James Franck Institute and Department of Physics, The University of Chicago
