High-fidelity and long-distance entangled-state transfer with Floquet topological edge modes

Abstract

We propose the generation of entangled qubits by utilizing the properties of edge states appearing at one end of a periodically driven (Floquet) superconducting qubit chain. Such qubits are naturally protected by the system's topology and their manipulation is possible through adiabatic control of the system parameters. By utilizing a Y-junction geometry, we then develop a protocol to perform high-fidelity transfer of entangled qubits from one end to another end of a qubit chain. Our quantum state transfer protocol is found to be robust against disorder and imperfection in the system parameters. More importantly, our proposed protocol also performs remarkably well at larger system sizes due to nonvanishing gaps between the involved edge states and the bulk states, thus allowing us in principle to transfer entangled states over an arbitrarily large distance. This work hence indicates that Floquet topological edge states are not only resourceful for implementing quantum gate operations, but also useful for high-fidelity and long-distance transfer of entangled states along solid-state qubit chains.

11 pages, 8 figures

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Cited by in corpus (11)

• Fast and robust quantum state transfer via a topological chain
• Time-induced second-order topological superconductors
• Digital Simulation of Topological Matter on Programmable Quantum Processors
• Large-scale GHZ states through topologically protected zero-energy mode in a superconducting qutrit-resonator chain
• Arbitrary entangled state transfer via a topological qubit chain
• Square-root Floquet topological phases and time crystals
• Fast quantum transfer mediated by topological domain walls
• Anomalous topological edge modes in a periodically-driven trimer lattice
• Floquet band engineering with Bloch oscillations
• Topological Phases of Tight-Binding Trimer Lattice in the BDI Symmetry Class
• Quantum-vacuum-protected topological edge polaritons