RT Journal Article T1 Beam splitter as quantum coherence-maker A1 Ares Santos, Laura A1 Luis Aina, Alfredo AB The aim of this work is to answer the question of how much quantum coherence a beam splitter is able to produce. To this end, we consider as the variables under study both the amount of coherence of the input states as well as the beam splitter characteristics. We conclude that there is an optimal combination of these factors making the gain of coherence maximum. In addition, the two-mode squeezed vacuum arises as the studied state most capable of gaining coherence when passing through a beam splitter. These results are qualitatively equivalent for the l1-norm of coherence and the relative entropy of coherence. PB IOP Publishing SN 0031-8949 YR 2023 FD 2023-01-01 LK https://hdl.handle.net/20.500.14352/72864 UL https://hdl.handle.net/20.500.14352/72864 LA eng NO © 2022 IOP Publishing LtdL. A. acknowledges financial support from the Spanish Ministerio de Ciencia e Innovación and the European Social Fund, Contract Grant No. BES-2017-081942. NO Ministerio de Ciencia e Innovación (MICINN) NO European Social Fund (ESF) DS Docta Complutense RD 6 abr 2025