Abstract
Recently, Meyer and Wallach [D.A. Meyer and N.R. Wallach (2002), J. of Math. Phys., 43, pp. 4273] proposed a measure of multi-qubit entanglement that is a function on pure states. We find that this function can be interpreted as a physical quantity related to the average purity of the constituent qubits and show how it can be observed in an efficient manner without the need for full quantum state tomography. A possible realization is described for measuring the entanglement of a chain of atomic qubits trapped in a 3D optical lattice.
Original language | English |
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Pages (from-to) | 619-626 |
Number of pages | 8 |
Journal | Quantum Information and Computation |
Volume | 3 |
Issue number | 6 |
Publication status | Published - Nov 2003 |
Externally published | Yes |
Keywords
- Entanglement