Persistent entanglement in arrays of interacting particles.

By Hans J. Briegel, Robert Raussendorf. Physical Review Letters, 2000

1,628 citations recorded by the source corpus.

We study the entanglement properties of a class of N-qubit quantum states that are generated in arrays of qubits with an Ising-type interaction. These states contain a large amount of entanglement as given by their Schmidt measure. They also have a high persistency of entanglement which means that approximately N/2 qubits have to be measured to disentangle the state. These states can be regarded as an entanglement resource since one can generate a family of other multiparticle entangled states such as the generalized Greenberger-Horne-Zeilinger states of <N/2 qubits by simple measurements and classical communication.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/b50c61944fa0d7769b5621ad31fe6f5803d87eaa

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Citations in the corpus

Entanglement certification from theory to experiment (2018, background): “[183] Hans J.”
Exploring quantum matter with ultracold atoms in optical lattices (2005, background): “Alternatively, these quantum gates can be described as a controllable quantum Ising interaction (Briegel and Raussendorf 2001): Hint ∝ g(t) ∑ j 1 + σ (j)z 2 1 − σ (j+1)z 2 .”
Ultra-large-scale continuous-variable cluster states multiplexed in the time domain (2013, methodology): “We then evaluated the multipartite inseparability criteria given in equation (3).”
Quantum many‐body phenomena in coupled cavity arrays (2008, background): “From a quantum information perspective, such a model can be used to create cluster states, highly entangled multipartite quantum states which are universal for quantum computation by single-site measurements [91].”
Collapse and revival of the matter wave field of a Bose–Einstein condensate (2002, background): “It would be interesting to start from a Mott insulating state and use the coherent collisions between single atoms, which have been demonstrated here, to create a many-atom entangled stat”
Qudits and High-Dimensional Quantum Computing (2020, methodology): “1 Measurement-Based Qudit Computing Measurement-based quantum computing was introduced as an alternative approach to quantum computing whereby a highly entangled state, such as a cluster state [22] or its graph-state generalization [70]; is prepared and then computation is performed by sequential si”
Fault-tolerant measurement-based quantum computing with continuous-variable cluster states. (2013, positive): “Measurement-based QC makes use of this fact, replacing the difficulty of coherently controlling interactions between quantum systems with the upfront challenge of creating an entangled resource known as a cluster state [2], whereafter local adaptive measurements alone enable the full power of QC [3]”