1.1k citations · 5.6k across the 37 of their papers we have counts for
5 papers · 1 filter
Minimal resonator loss for circuit quantum electrodynamics
R. Barends, N. Vercruyssen, A. Endo +6
Single photon level quality factors of 500x10^3 are shown in NbTiN superconducting resonators at millikelvin temperatures. This result originates from the intrinsic low dielectric…
Decoherence Dynamics of Complex Photon States in a Superconducting Circuit
H. Wang, M. Hofheinz, M. Ansmann +9
Quantum states inevitably decay with time into a probabilistic mixture of classical states, due to their interaction with the environment and measurement instrumentation. We presen…
Improving the Coherence Time of Superconducting Coplanar Resonators
H. Wang, M. Hofheinz, J. Wenner +10
The quality factor and energy decay time of superconducting resonators have been measured as a function of material, geometry, and magnetic field. Once the dissipation of trapped m…
Energy Decay in Josephson Qubits from Non-equilibrium Quasiparticles
John M. Martinis, M. Ansmann, J. Aumentado
We calculate the energy decay rate of Josephson qubits and superconducting resonators from non-equilibrium quasiparticles. The decay rates from experiments are shown to be consiste…
Measurement of the decay of Fock states in a superconducting quantum circuit
H. Wang, M. Hofheinz, M. Ansmann +8
We demonstrate the controlled generation of Fock states with up to 15 photons in a microwave coplanar waveguide resonator coupled to a superconducting phase qubit. The subsequent d…