Balance of information in bipartite quantum-communication systems: Entanglement-energy analogy - art. no. 022310

We adopt the view that information is the primary physical entity possessin g objective meaning. Based on two postulates stating that (i) entanglement is st form of quantum information corresponding to internal energy and (ii) sending qubits corresponds to work, we show that in the closed bipartite q uantum-communication systems, the information is conserved. We also discuss the entanglement-energy analogy in the context of the Gibbs-Helmholtz-like equation connecting the entanglement, of formation, distillable entangleme nt, and bound entanglement. Then we show that in the deterministic protocol s of distillation, the information is conserved. We also discuss the object ivity of quantum information in the context of information interpretation o f quantum states and algorithmic complexity.