  Entanglement equivalence of N-qubit symmetric statesMathonet, Pierre  ; Krins, Stéphanie ; et alin Physical Review. A (2010), 81 We study the interconversion of multipartite symmetric N-qubit states under stochastic local operations and classical communication (SLOCC). We demonstrate that if two symmetric states can be connected ... [more ▼] We study the interconversion of multipartite symmetric N-qubit states under stochastic local operations and classical communication (SLOCC). We demonstrate that if two symmetric states can be connected with a nonsymmetric invertible local operation (ILO), then they belong necessarily to the separable, W, or Greenberger-Horne-Zeilinger (GHZ) entanglement class, establishing a practical method of discriminating subsets of entanglement classes. Furthermore, we prove that there always exists a symmetric ILO connecting any pair of symmetric N-qubit states equivalent under SLOCC, simplifying the requirements for experimental implementations of local interconversion of those states. [less ▲] Detailed reference viewed: 36 (12 ULg)Operational Determination of Multiqubit Entanglement Classes via Tuning of Local OperationsBastin, Thierry ; ; et alin Physical Review Letters (2009), 102 We present a physical setup with which it is possible to produce arbitrary symmetric long-lived multiqubit entangled states in the internal ground levels of photon emitters, including the paradigmatic ... [more ▼] We present a physical setup with which it is possible to produce arbitrary symmetric long-lived multiqubit entangled states in the internal ground levels of photon emitters, including the paradigmatic Greenberger-Horne-Zeilinger and W states. In the case of three emitters, where each tripartite entangled state belongs to one of two well-defined entanglement classes, we prove a one-to-one correspondence between well-defined sets of experimental parameters, i.e., locally tunable polarizer orientations, and multiqubit entanglement classes inside the symmetric subspace. [less ▲] Detailed reference viewed: 23 (11 ULg)Operational Families of Entanglement Classes for Symmetric N-Qubit StatesBastin, Thierry ; Krins, Stéphanie ; Mathonet, Pierre et alin Physical Review Letters (2009), 103 We solve the entanglement classification under stochastic local operations and classical communication (SLOCC) for all multipartite symmetric states in the general N-qubit case. For this purpose, we ... [more ▼] We solve the entanglement classification under stochastic local operations and classical communication (SLOCC) for all multipartite symmetric states in the general N-qubit case. For this purpose, we introduce 2 parameters playing a crucial role, namely, the diversity degree and the degeneracy configuration of a symmetric state. Those parameters give rise to a simple method of identifying operational families of SLOCC entanglement classes of all symmetric N-qubit states, where the number of families grows as the partition function of the number of qubits. [less ▲] Detailed reference viewed: 30 (7 ULg)Operational Families of Entanglement Classes for Symmetric N-Qubit StatesBastin, Thierry ; Krins, Stéphanie ; Mathonet, Pierre et alConference (2009) Detailed reference viewed: 8 (3 ULg)Entanglement classification of symmetric N-qubit StatesBastin, Thierry ; Krins, Stéphanie ; Mathonet, Pierre et alConference (2009) Detailed reference viewed: 16 (3 ULg)Entanglement Equivalence of symmetric N-qubit StatesBastin, Thierry ; Krins, Stéphanie ; Mathonet, Pierre et alConference (2009) Detailed reference viewed: 18 (4 ULg)Operational Families of Entanglement Classes for Symmetric N-Qubit StatesBastin, Thierry ; Krins, Stéphanie ; Mathonet, Pierre et alPoster (2009) Detailed reference viewed: 12 (6 ULg)Operational monitoring of multi-qubit entanglement classes with trapped ionsBastin, Thierry ; ; et alConference (2008) Detailed reference viewed: 1 (0 ULg)Switching entanglement classes via local operationsBastin, Thierry ; ; et alPoster (2008) Detailed reference viewed: 5 (0 ULg)Operational monitoring of multi-qubit entanglement classes with trapped ionsBastin, Thierry ; ; et alPoster (2008) Detailed reference viewed: 4 (1 ULg)Operational monitoring of multi-qubit entanglement classes via tuning of local operationsBastin, Thierry ; ; et alConference (2008) Detailed reference viewed: 1 (0 ULg)Operational monitoring of multi-qubit entanglement classes via tuning of local operationsBastin, Thierry ; ; et alPoster (2008) Detailed reference viewed: 1 (0 ULg)Operational monitoring of multi-qubit entanglement classes via tuning of local operationsBastin, Thierry ; ; et alConference (2008) Detailed reference viewed: 1 (0 ULg) |
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