A note on invariants and entanglements
- 9 July 2001
- journal article
- Published by IOP Publishing in Journal of Optics B: Quantum and Semiclassical Optics
- Vol. 3 (4) , 223-227
- https://doi.org/10.1088/1464-4266/3/4/305
Abstract
Quantum entanglements are studied in terms of the invariants under local unitary transformations. A generalized formula of concurrence for N-dimensional quantum systems is presented. This generalized concurrence has potential applications in studying separability and calculating the entanglement of formation for high-dimensional mixed quantum states.Keywords
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