Mgr K. Schlichtholz: Mesoscopic description of entanglement of bosonic fields and its open evolution
Channel: Centrum Fizyki Teoretycznej PAN
Date: 24/04/2024

Mgr Konrad Schlichtholz  (International Centre for Theory of Quantum Technologies, University of Gdansk).
Mesoscopic description of entanglement of bosonic fields and its open evolution.

An important problem is to find simplified descriptions of mesoscopic systems that still capture non-classical phenomena such as entanglement. In particular, the study of complex fully bosonic systems undergoing open evolution is crucial for the progress of photonic quantum computing and communication. In this seminar, we present a mesoscopic description of such systems based on boson-number correlations. This description, among other things, allows for tracking Markovian open evolution of entanglement of both non-Gaussian and Gaussian states. This is achieved by mapping the problem of entanglement of a multi-mode bosonic field into entanglement of two-particle-like states on a finite-dimensional Hilbert space. The established first quantization like structure allows for intuitive usage of known tools, which we show based on examples relevant for some quantum communication tasks.

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