Remote Sensing and Control of Phase Qubits

TL;DR

This paper presents a remote sensing design for phase qubits that separates control and readout circuits, enhancing measurement reliability and reusability of components, demonstrated through various qubit measurements.

Contribution

The novel design separates control/readout from the qubit loop, improving robustness and reusability compared to traditional integrated approaches.

Findings

Successful demonstration of Rabi oscillations, spectroscopy, and energy relaxation.

Enhanced measurement reliability through material robustness.

Reusability of control/readout chips across different qubits.

Abstract

We demonstrate a remote sensing design of phase qubits by separating the control and readout circuits from the qubit loop. This design improves measurement reliability because the control readout chip can be fabricated using more robust materials and can be reused to test different qubit chips. Typical qubit measurements such as Rabi oscillations, spectroscopy, and excited-state energy relaxation are presented.