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Conferences > EQEC > 2011 > EA8 > EA8_1
  • CLEO/Europe and EQEC 2011 Conference Digest
  • OSA Technical Digest (CD) (Optica Publishing Group, 2011),
  • paper EA8_1

Permutationally Invariant Tomography of a Four-Qubit Symmetric Dicke State

C. Schwemmer, G. Tóth, W. Wieczorek, D. Gross, R. Krischek, and H. Weinfurter

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Abstract

Multi-partite entangled quantum states play an important role in quantum information processing with applications, for example, in quantum enhanced metrology or quantum communication. Therefore, efficient measurement schemes to fully characterize these states are needed. However, conventional quantum state tomography which reveals all properties of a quantum state suffers from an exponentially increasing measurement effort with the number of qubits.

© 2011 IEEE

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