Fast quantum information transfer with superconducting flux qubits coupled to a cavity

TL;DR

This paper proposes a rapid quantum information transfer method using superconducting flux qubits coupled to a cavity, leveraging resonant interactions to enhance speed and simplicity without requiring qubit level adjustments or precise device uniformity.

Contribution

It introduces a fast, efficient quantum transfer protocol that simplifies implementation by eliminating the need for qubit level tuning and precise qubit placement.

Findings

Transfer speed is significantly increased compared to previous methods.

No adjustment of qubit levels during operation is necessary.

The method tolerates device parameter variations and qubit placement inaccuracies.

Abstract

We present a way to realize quantum information transfer with superconducting flux qubits coupled to a cavity. Because only resonant qubit-cavity interaction and resonant qubit-pulse interaction are applied, the information transfer can be performed much faster, when compared with the previous proposals. This proposal does not require adjustment of the qubit level spacings during the operation. Moreover, neither uniformity in the device parameters nor exact placement of qubits in the cavity is needed by this proposal.