O. V. Astafiev

Efficient Tunable Microwave Single-photon Source Based on Transmon Qubit

2019

Single-photon sources of high efficiency are of great interest because they are the key elements in many prospective quantum technologies and applications. Based on our previous work, here we demonstrate a high-quality tunable microwave single-photon …

Superconducting ‘twin’ qubit

2020 · Physical review. B./Physical review. B

We study a flux qubit consisting of a symmetrical pair of superconducting loops, with two Josephson junctions in each, joined by a common Josephson junction---a `twin' flux qubit. The qubit is capacitively coupled to a …