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Title: Information transmission in bosonic memory channels using Gaussian matrix-product states as near-optimal symbols

We seek for a realistic implementation of multimode Gaussian entangled states that can realize the optimal encoding for quantum bosonic Gaussian channels with memory. For a Gaussian channel with classical additive Markovian correlated noise and a lossy channel with non-Markovian correlated noise, we demonstrate the usefulness using Gaussian matrix-product states (GMPS). These states can be generated sequentially, and may, in principle, approximate well any Gaussian state. We show that we can achieve up to 99.9% of the classical Gaussian capacity with GMPS requiring squeezing parameters that are reachable with current technology. This may offer a way towards an experimental realization.
Authors:
; ;  [1]
  1. QuIC, Ecole Polytechnique de Bruxelles, CP 165/59, Université Libre de Bruxelles (ULB), B-1050 Brussels (Belgium)
Publication Date:
OSTI Identifier:
22390685
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1633; Journal Issue: 1; Conference: 11. International Conference on Quantum Communication, Measurement and Computation, Vienna (Austria), 30 Jul - 3 Aug 2012; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; APPROXIMATIONS; BOSONS; CAPACITY; GAUSS FUNCTION; IMPLEMENTATION; MARKOV PROCESS; MATRICES; QUANTUM ENTANGLEMENT; QUANTUM STATES