aqora

Entanglement control of superconducting qubits

Sophia E. Economou

Bulletin of the American Physical SocietyNov 10, 20160 citations

Double Quantum Entanglement to Understand Superconductivity

Jens Cordelair

The feature of quantum entanglement in doublet and multiplet systems is briefly described and used to create a new model for the superconducting phase.

World Journal of Condensed Matter PhysicsJan 1, 20132 citations

Deterministic Entanglement of Photons in Two Superconducting Microwave Resonators

H. Wang, M. Mariantoni, Radoslaw C. Bialczak +12 more

Quantum entanglement, one of the defining features of quantum mechanics, has been demonstrated in a variety of nonlinear spinlike systems. Quantum entanglement in linear systems has proven significantly more challenging, as the intrinsic energy level degeneracy associated with linearity makes quantum control more difficult. Here we demonstrate the quantum entanglement of photon states in two independent linear microwave resonators, creating N-photon NOON states (entangled states |N0> + |0N>) as a benchmark demonstration. We use a superconducting quantum circuit that includes Josephson qubits to control and measure the two resonators, and we completely characterize the entangled states with bipartite Wigner tomography. These results demonstrate a significant advance in the quantum control of linear resonators in superconducting circuits.Quantum entanglement, one of the defining features of quantum mechanics, has been demonstrated in a variety of nonlinear spinlike systems. Quantum entanglement in linear systems has proven significantly more challenging, as the intrinsic energy level degeneracy associated with linearity makes quantum control more difficult. Here we demonstrate the quantum entanglement of photon states in two independent linear microwave resonators, creating N-photon NOON states (entangled states |N0> + |0N>) as a benchmark demonstration. We use a superconducting quantum circuit that includes Josephson qubits to control and measure the two resonators, and we completely characterize the entangled states with bipartite Wigner tomography. These results demonstrate a significant advance in the quantum control of linear resonators in superconducting circuits.

arXiv:1011.2862Physical Review LettersFeb 7, 2011202 citations

E-cient creation of multipartite entanglement for superconducting quantum computers

Johannes Ferber

Jan 1, 20050 citations

Deterministic Many-Resonator W Entanglement of Nearly Arbitrary Microwave States via Attractive Bose-Hubbard Simulation

Adil A. Gangat, Ian P. McCulloch, Gerard J Milburn

Recent advances in fabricating superconducting circuits have allowed large numbers of microwave resonators and superconducting qubits to be employed in such circuits, but shared quantum entanglement among the photonics states of the resonators has not been attempted. Theorists now present a proposal that uses superconducting circuits to simulate a particular many-body quantum model that until now has been experimentally inaccessible and to create a type of shared quantum entanglement with the simulation.Recent advances in fabricating superconducting circuits have allowed large numbers of microwave resonators and superconducting qubits to be employed in such circuits, but shared quantum entanglement among the photonics states of the resonators has not been attempted. Theorists now present a proposal that uses superconducting circuits to simulate a particular many-body quantum model that until now has been experimentally inaccessible and to create a type of shared quantum entanglement with the simulation.

arXiv:1304.4065Physical Review XAug 21, 201315 citations

Large-scale entanglement in superconducting quantum devices

Gary J. Mooney, Gregory A. L. White, Charles D. Hill +1 more

Bulletin of the American Physical SocietyMar 16, 20210 citations

Superconductivity

Abstract

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Superconductivity

Abstract

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