Measurable entanglement for tripartite quantum pure states of qubits

Abstract

We show that for tripartite quantum pure states of qubits, all the kinds of entanglement in terms of SLOCC classification are experimentally measurable by simple projective measurements, provided that four copies of the composite quantum system are available. In particular, the entanglement of reduced density matrices, even though they are mixed states, can be exactly determined in experiment. Concurrence of assistance is also shown to be measurable by introducing an interesting equations with explicit physical meanings.

4 pages, 1 figure. Phys. Rev. A 76, 022324 (2007)

References in corpus (3)

• Scalable multi-particle entanglement of trapped ions
• Deterministic Entanglement of Assistance and Monogamy Constraints
• Measuring Multipartite Concurrence with a Single Factorizable Observable

Cited by in corpus (12)

• Entanglement monogamy relations of qubit systems
• Polygamy of Distributed Entanglement
• Observable estimation of entanglement for arbitrary finite-dimensional mixed states
• Tripartite entanglement measure under local operations and classical communication
• Measurable Concurrence of Mixed States
• Lower Bound of Multipartite Concurrence Based on Sub-quantum State Decomposition
• Monogamy equality in $2\otimes 2\otimes d$ quantum systems
• Monogamy and entanglement in tripartite quantum states
• Systematic generation of entanglement measures for pure states
• Generalized product-form monogamy relations in multi-qubit systems
• Entanglement of Assistance as a measure of multiparty entanglement
• Describing a Quantum Channel by State Tomography of a Single Probe State