RT Journal Article T1 Towards electron-electron entanglement in Penning traps A1 Lamata, C. A1 Porras Torres, Diego A1 Cirac, J.I. A1 Goldman, J. A1 Gabrielse, G. AB Entanglement of isolated elementary particles other than photons has not yet been achieved. We show how building blocks demonstrated with one trapped electron might be used to make a model system and method for entangling two electrons. Applications are then considered, including two-qubit gates and more precise quantum metrology protocols. PB American Physical Society SN 1050-2947 YR 2010 FD 2010-02 LK https://hdl.handle.net/20.500.14352/42804 UL https://hdl.handle.net/20.500.14352/42804 LA eng NO ©2010 The American Physical Society.L.L. and G.G. acknowledge funding by Alexander von Humboldt Foundation, and L.L. was supported by the Spanish MICINN project FIS2008-05705/FIS. We also acknowledge support by the European IP SCALA and DFG Excellenzcluster NIM and by the US NSF. NO Ministerio de Ciencia e Innovación (MICINN) DS Docta Complutense RD 9 may 2026