2004/03/17 by M. Paternostro, Mauro Paternostro, Wonmin Son +5 · 2 citations
Computer Science · Engineering · Mathematics · Physics and Astronomy · #Cluster state #Computer science #Electrical engineering #Engineering #Field (mathematics) #Mathematics #Multipartite entanglement #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum information #Quantum mechanics #Quantum network #Qubit #Squashed entanglement #Topology (electrical circuits) #W state #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physreva.70.022320
published as Phys. Rev. A 70, 022320 (2004). · 9 pages, 7 figures, RevTex4
arxiv created 2004/03/17 · openalex publication_date 2004/08/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A key element in the architecture of a quantum-information processing network is a reliable physical interface between fields and qubits. We study a process of entanglement transfer engineering, where two remote qubits respectively interact with an entangled two-mode continuous-variable (CV) field. We quantify the entanglement induced in the qubit state at the expenses of the loss of entanglement in the CV system. We discuss the range of mixed entangled states which can be obtained with this setup. Furthermore, we suggest a protocol to determine the residual entangling power of the light fields inferring, thus, the entanglement left in the field modes which, after the interaction, are no longer in a Gaussian state. Two different setups are proposed: a cavity-QED system and an interface between superconducting qubits and field modes. We address in detail the practical difficulties inherent in these two proposals, showing that the latter is promising in many aspects.