114 citations · 339 across the 4 of their papers we have counts for
4 papers
Consistency of ground state and spectroscopic measurements on flux qubits
A. Izmalkov, S. H. W. van der Ploeg, S. N. Shevchenko +5
We compare the results of ground state and spectroscopic measurements carried out on superconducting flux qubits which are effective two-level quantum systems. For a single qubit a…
Sisyphus cooling and amplification by a superconducting qubit
M. Grajcar, S. H. W. van der Ploeg, A. Izmalkov +5
Laser cooling of the atomic motion paved the way for remarkable achievements in the fields of quantum optics and atomic physics, including Bose-Einstein condensation and the trappi…
Four-qubit device with mixed couplings
M. Grajcar, A. Izmalkov, S. H. W. van der Ploeg +12
We present the first experimental results on a device with more than two superconducting qubits. The circuit consists of four three-junction flux qubits, with simultaneous ferro- a…
Direct Josephson coupling between superconducting flux qubits
M. Grajcar, A. Izmalkov, S. H. W. van der Ploeg +8
We have demonstrated strong antiferromagnetic coupling between two three-junction flux qubits based on a shared Josephson junction, and therefore not limited by the small inductanc…