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
… In conclusion, we have experimentally demonstrated strong coherent coupling between
a flux qubit and an ensemble of nitrogen–vacancy colour centres in single-crystal diamond. …

Coherent dynamics of a flux qubit coupled to a harmonic oscillator

I Chiorescu, P Bertet, K Semba, Y Nakamura… - Nature, 2004 - nature.com
… be achieved for superconducting devices. Here we demonstrate entanglement between a
superconducting flux qubit (a two-level system) and a superconducting quantum interference …

Coherent quantum dynamics of a superconducting flux qubit

I Chiorescu, Y Nakamura, CJPM Harmans, JE Mooij - Science, 2003 - science.org
… We have observed coherent time evolution between two quantum states of a … Our flux
qubit consists of three Josephson junctions arranged in a superconducting loop threaded by an …

Controllable coupling of superconducting flux qubits

SHW Van der Ploeg, A Izmalkov, AM van den Brink… - Physical review …, 2007 - APS
… For the implementation of real quantum algorithms, several hurdles must still be cleared,
such as increasing the number of qubits and their coherence times. Equally important, however, …

Flux qubits with long coherence times for hybrid quantum circuits

M Stern, G Catelani, Y Kubo, C Grezes, A Bienfait… - Physical review …, 2014 - APS
… of superconducting flux qubits embedded in a three dimensional copper cavity. The qubits
… measured by coupling them inductively to an on-chip superconducting resonator located in …

The flux qubit revisited to enhance coherence and reproducibility

F Yan, S Gustavsson, A Kamal, J Birenbaum… - Nature …, 2016 - nature.com
… high-coherence quantum bits (qubits). Here, we revisit the design and fabrication of the
superconducting flux qubit, … and relaxation times in excess of 40 μs at its flux-insensitive point. …

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. …

Coupling nitrogen-vacancy centers in diamond to superconducting flux qubits

D Marcos, M Wubs, JM Taylor, R Aguado, MD Lukin… - Physical review …, 2010 - APS
coherent coupling between nitrogen-vacancy (NV) centers in diamond and superconducting
(SC) flux qubits. … As we show below, the magnetic coupling between a SC flux qubit and a …

Ultrastrong coupling regime of cavity QED with phase-biased flux qubits

J Bourassa, JM Gambetta, AA Abdumalikov Jr… - Physical Review A …, 2009 - APS
… However, charge qubits suffer from charge fluctuations which lead to low coherence times.
By … qubit 2 has led to significant improvement in coherence times 3 , in addition to larger …

Tunable superconducting flux qubits with long coherence times

T Chang, T Cohen, I Holzman, G Catelani, M Stern - Physical Review Applied, 2023 - APS
… a series of tunable flux qubits inductively coupled to a coplanar waveguide resonator
fabricated on a sapphire substrate. Each qubit includes an asymmetric superconducting quantum …