Matthias Steffen, Jay M. Gambetta, et al.
ESSDERC 2016
We introduce a new entangling gate between two fixed-frequency qubits statically coupled via a microwave resonator bus which combines the following desirable qualities: all-microwave control, appreciable qubit separation for reduction of crosstalk and leakage errors and the ability to function as a two-qubit conditional-phase gate. A fixed, always-on interaction is explicitly designed between higher energy (non-computational) states of two transmon qubits, and then a conditional-phase gate is 'activated' on the otherwise unperturbed qubit subspace via a microwave drive. We implement this microwave-activated conditional-phase gate with a fidelity from quantum process tomography of ∼ 87%. © IOP Publishing and Deutsche Physikalische Gesellschaft.
Matthias Steffen, Jay M. Gambetta, et al.
ESSDERC 2016
Petar Jurcevic, Ali Javadi-Abhari, et al.
Quantum Science and Technology
Panos Aliferis, Andrew W. Cross
Physical Review Letters
Bei Zeng, Hyeyoun Chung, et al.
Physical Review A - AMO