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Surface codes: Towards practical large-scale quantum computation
The concept of the stabilizer, using two qubits, is introduced, and the single-qubit Hadamard, S and T operators are described, completing the set of required gates for a universal quantum computer.
Planar Superconducting Resonators with Internal Quality Factors above One Million
We describe the fabrication and measurement of microwave coplanar waveguide resonators with internal quality factors above 10 million at high microwave powers and over 1 million at low powers, with
Minimizing quasiparticle generation from stray infrared light in superconducting quantum circuits
We find that quasiparticle generation from stray infrared light creates a significant loss mechanism in superconducting resonators and qubits. We show that resonator quality factors and qubit energy
Computing prime factors with a Josephson phase qubit quantum processor
Shor’s quantum algorithm factorizes integers, and implementing this is a benchmark test in the early development of quantum processors. Researchers now demonstrate this important test in a
Generation of three-qubit entangled states using superconducting phase qubits
The operation of three coupled superconducting phase qubits are demonstrated and used to create and measure |GHZ〉 and |W〉 states and are shown to satisfy entanglement witnesses, confirming that they are indeed examples of three-qubitEntanglement and are not separable into mixtures of two-qubits.
Implementing the Quantum von Neumann Architecture with Superconducting Circuits
A quantum central processing unit that exchanges data with a quantum random-access memory integrated on a chip, with instructions stored on a classical computer is demonstrated.
Cavity grid for scalable quantum computation with superconducting circuits
This work demonstrates that the proposed architecture for quantum computing based on superconducting circuits, where on-chip planar microwave resonators are arranged in a two-dimensional grid with a qubit at each intersection, encompasses the fundamental elements of a scalable fault-tolerant quantum-computing architecture.
Surface loss simulations of superconducting coplanar waveguide resonators
Losses in superconducting planar resonators are presently assumed to predominantly arise from surface-oxide dissipation, due to experimental losses varying with choice of materials. We model and
Deterministic entanglement of photons in two superconducting microwave resonators.
This work uses a superconducting quantum circuit that includes Josephson qubits to control and measure the two resonators, and completely characterize the entangled states with bipartite Wigner tomography, demonstrating a significant advance in the quantum control of linear resonators insuperconducting circuits.
Two-photon probe of the Jaynes-Cummings model and symmetry breaking in circuit QED
Superconducting qubits behave as artificial two-level atoms and are used to investigate fundamental quantum phenomena. In this context, the study of multi-photon excitations occupies a central role.