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Deterministic entanglement of photons in two superconducting microwave resonators
H. Wang, Matteo Mariantoni, Radoslaw C. Bialczak +12
Quantum entanglement, one of the defining features of quantum mechanics, has been demonstrated in a variety of nonlinear spin-like systems. Quantum entanglement in linear systems h…
Photon shell game in three-resonator circuit quantum electrodynamics
Matteo Mariantoni, H. Wang, Radoslaw C. Bialczak +12
The generation and control of quantum states of light constitute fundamental tasks in cavity quantum electrodynamics (QED). The superconducting realization of cavity QED, circuit Q…
A Superconducting 180° Hybrid Ring Coupler for circuit Quantum Electrodynamics
E. Hoffmann, F. Deppe, T. Niemczyk +11
Superconducting circuit quantum electrodynamics experiments with propagating microwaves require devices acting as beam splitters. Using niobium thin films on silicon and sapphire s…
Reduced phase error through optimized control of a superconducting qubit
Erik Lucero, Julian Kelly, Radoslaw C. Bialczak +11
Minimizing phase and other errors in experimental quantum gates allows higher fidelity quantum processing. To quantify and correct for phase errors in particular, we have developed…
Quantum process tomography of two-qubit controlled-Z and controlled-NOT gates using superconducting phase qubits
T. Yamamoto, M. Neeley, E. Lucero +12
We experimentally demonstrate quantum process tomography of controlled-Z and controlled-NOT gates using capacitively-coupled superconducting phase qubits. These gates are realized…
Generation of Three-Qubit Entangled States using Superconducting Phase Qubits
M. Neeley, R. C. Bialczak, M. Lenander +11
Entanglement is one of the key resources required for quantum computation, so experimentally creating and measuring entangled states is of crucial importance in the various physica…