2002/06/19 by S. J. van Enk · 1 citation
Computer Science · Physics and Astronomy · #Mechanical and Optical Resonators #Quantum Information and Cryptography #Quantum Mechanics and Applications #quant-ph
paper · pdf · doi:10.1103/physreva.67.022303
published as Phys. Rev. A 67, 022303 (2003) · 5 pages ReVTeX
arxiv created 2002/06/19 · openalex publication_date 2003/02/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Given a quantum state of the electromagnetic field, one is, in principle, free to redefine the field modes. We show here how the amount of entanglement in a given state depends on redefinitions of the modes, and calculate the minimum and maximum entanglement over all such redefinitions for several examples. Redefinitions can also be interpreted as transformations that one can apply actively, for example, in order to create nonlocal entanglement.