Engineering high-coherence superconducting qubits

I Siddiqi - Nature Reviews Materials, 2021 - nature.com
… state-of-the-art qubits and processors. In this Review, the major sources of decoherence in
superconducting qubits are identified through an exploration of seminal qubit and resonator …

Coupling superconducting qubits via a cavity bus

J Majer, JM Chow, JM Gambetta, J Koch, BR Johnson… - Nature, 2007 - nature.com
… effectively on and off, we demonstrate coherent transfer of quantum states between the
qubits. The cavity is also used to perform multiplexed control and measurement of the …

Coherent control of a superconducting qubit with dynamically tunable qubit-cavity coupling

AJ Hoffman, SJ Srinivasan, JM Gambetta… - Physical Review B …, 2011 - APS
coherent control and measurement of a superconducting qubit coupled to a superconducting
coplanar waveguide resonator with a dynamically tunable qubit-cavity coupling strength. …

Quantum coherent tunable coupling of superconducting qubits

AO Niskanen, K Harrabi, F Yoshihara, Y Nakamura… - Science, 2007 - science.org
… To this end, superconducting circuits allow for a high degree … coupling of optimally biased
superconducting flux qubits. By … coupling element, we parametrically induced a two-qubit

[HTML][HTML] Coherent microwave-photon-mediated coupling between a semiconductor and a superconducting qubit

P Scarlino, DJ Van Woerkom, UC Mendes… - Nature …, 2019 - nature.com
… to superconducting qubits. Here, we demonstrate coherent coupling between a
superconducting transmon qubit and a semiconductor double quantum dot (DQD) charge …

Coherent coupling between a ferromagnetic magnon and a superconducting qubit

Y Tabuchi, S Ishino, A Noguchi, T Ishikawa… - Science, 2015 - science.org
… the coherent coupling between a single-magnon excitation in a millimeter-sized ferromagnetic
sphere and a superconducting qubit, … We obtain the coupling strength far exceeding the …

Coherent coupling of a superconducting flux qubit to an electron spin ensemble in diamond

X Zhu, S Saito, A Kemp, K Kakuyanagi, S Karimoto… - Nature, 2011 - nature.com
… a superconducting qubit is coupled to a … of coherent quantum coupling could be achieved.
Zhu et al. improve the prospects of such technology, demonstrating coherent strong coupling

Control and readout of a superconducting qubit using a photonic link

F Lecocq, F Quinlan, K Cicak, J Aumentado… - Nature, 2021 - nature.com
… To determine the effect that readout with a photonic link may have on qubit coherence, in
Fig. 2c we compare the qubit coherence time T 2 when measured using the photodiode or the …

Digital coherent control of a superconducting qubit

E Leonard Jr, MA Beck, J Nelson, BG Christensen… - Physical Review …, 2019 - APS
… arbitrary coherent control of a superconducting transmon qubit driven … on the same chip as
the qubit. The basic scheme of the … are generated and coupled capacitively to the qubit. Each …

Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics

A Wallraff, DI Schuster, A Blais, L Frunzio, RS Huang… - Nature, 2004 - nature.com
coupled to an on-chip cavity consisting of a superconducting transmission line resonator.
We show that the strong coupling … observe the coherent interaction of a superconducting two-…