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

Journal Article · Thu Dec 04 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4903134· OSTI ID:22390685

Schäfer, Joachim; Karpov, Evgueni; Cerf, Nicolas J. ^[1]

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1. QuIC, Ecole Polytechnique de Bruxelles, CP 165/59, Université Libre de Bruxelles (ULB), B-1050 Brussels (Belgium)

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.

• OSTI ID: 22390685
• Journal Information: AIP Conference Proceedings, Vol. 1633, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
BOSONS
CAPACITY
GAUSS FUNCTION
IMPLEMENTATION
MARKOV PROCESS
MATRICES
QUANTUM ENTANGLEMENT
QUANTUM STATES