title: Converting Coherence to Quantum Correlations.
abstract: Recent results in quantum information theory characterize quantum coherence in the context of resource theories. Here, we study the relation between quantum coherence and quantum discord, a kind of quantum correlation which appears even in nonentangled states. We prove that the creation of quantum discord with multipartite incoherent operations is bounded by the amount of quantum coherence consumed in its subsystems during the process. We show how the interplay between quantum coherence consumption and creation of quantum discord works in the preparation of multipartite quantum correlated states and in the model of deterministic quantum computation with one qubit.
authors.affiliation: Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, 100084 Beijing, China.|Department of Atomic and Laser Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
authors.forename: Jiajun
authors.initials: J
authors.lastname: Ma
authors.affiliation: Department of Atomic and Laser Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Yadin
authors.affiliation: Department of Atomic and Laser Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
authors.forename: Davide
authors.initials: D
authors.lastname: Girolami
authors.affiliation: Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, 100084 Beijing, China.|Department of Atomic and Laser Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.|Centre for Quantum Technologies, National University of Singapore, 117543 Singapore, Singapore.|Department of Physics, National University of Singapore, 2 Science Drive 3, 117551 Singapore, Singapore.
authors.forename: Vlatko
authors.initials: V
authors.lastname: Vedral
authors.affiliation: Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, 100084 Beijing, China.|Centre for Quantum Technologies, National University of Singapore, 117543 Singapore, Singapore.|School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore.|Complexity Institute, Nanyang Technological University, 18 Nanyang Drive, 637723 Singapore, Singapore.
authors.forename: Mile
authors.initials: M
authors.lastname: Gu