Demonstration of Geometric Landau-Zener Interferometry in a Superconducting Qubit

Abstract

Geometric quantum manipulation and Landau-Zener interferometry have been separately explored in many quantum systems. In this Letter, we combine these two approaches to study the dynamics of a superconducting phase qubit. We experimentally demonstrate Landau-Zener interferometry based on the pure geometric phases in this solid-state qubit. We observe the interference caused by a pure geometric phase accumulated in the evolution between two consecutive Landau-Zener transitions, while the dynamical phase is canceled out by a spin-echo pulse. The full controllability of the qubit state as a function of the intrinsically robust geometric phase provides a promising approach for quantum state manipulation.

5 pages + 3 pages supplemental Material

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• Proposal for implementing universal superadiabatic geometric quantum gates in nitrogen-vacancy centers
• Landau-Zener topological quantum state transfer
• Nonadiabatic Dynamics of a Dissipative Two-level System
• Landau-Zener-Stückelberg interference in a multimode electromechanical system in the quantum regime
• Time-domain grating with a periodically driven qutrit
• Realizing and manipulating space-time inversion symmetric topological semimetal bands with superconducting quantum circuits
• Anti-Kibble-Zurek behavior of a noisy transverse-field XY chain and its quantum simulation with two-level systems
• Dynamic transition in Landau-Zener-Stückelberg interferometry of dissipative systems: the case of the flux qubit
• Noise-resistant Landau-Zener sweeps from geometrical curves
• Lamb shift enhancement and detection in strongly driven superconducting circuits
• Demonstration of Hopf-link semimetal bands with superconducting circuits
• Conditions for Equivalent Noise Sensitivity of Geometric and Dynamical Quantum Gates
• Simulating dynamical quantum Hall effect with superconducting qubits
• Geometric energy transfer in a Stückelberg interferometer of two parametrically coupled mechanical modes
• Nonlinear Bloch-Zener oscillations for Bose-Einstein condensates in a Lieb optical lattice
• Tunable quantum interference effects in Floquet two- and three-level systems
• Symmetry-protected Landau-Zener-Stückelberg-Majorana interference and non-adiabatic topological transport of edge states
• Simulation of the many-body dynamical quantum Hall effect in an optical lattice
• Simulating the Kibble-Zurek mechanism of the Ising model with a superconducting qubit system
• Electric circuit analog of Landau-Zener tunneling using time-varying elements
• Fast magnetic field manipulations and nonadiabatic geometric phases of nitrogen-vacancy center spin in diamond