Theoretical analysis of perfect quantum state transfer with superconducting qubits

TL;DR

This paper provides a theoretical analysis of perfect quantum state transfer in superconducting qubit networks, exploring physical limits and effects of disorder, decoherence, and couplings.

Contribution

It introduces a theoretical framework for understanding quantum state transfer in superconducting circuits, accounting for practical imperfections.

Findings

Quantum state transfer can be achieved with tunable superconducting qubits.

Disorder and decoherence impact transfer fidelity but can be mitigated.

Higher-order couplings influence the transfer dynamics and limits.

Abstract

Superconducting quantum circuits, fabricated with multiple layers, are proposed to implement perfect quantum state transfer between nodes of a hypercube network. For tunable devices such as the phase qubit, each node can transmit quantum information to any other node at a constant rate independent of the distance between qubits. The physical limits of quantum state transfer in this network are theoretically analyzed, including the effects of disorder, decoherence, and higher-order couplings.