Collective Decoherence

I investigate quantum states that are very robust and may be useful for sending quantum information over an optical fiber.

The project is done under supervision of Konrad Banaszek in Photonic implementations of quantum-enhanced technologies funded under the TEAM programme operated by the Foundation for Polish Science.

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Publications

• P. Migdał, K. Banaszek, Immunity of information encoded in decoherence-free subspaces to particle loss, arXiv:1107.3786 [quant-ph] (2011)
• P. Migdał, Kody kwantowe odporne na dekoherencję i stratę fotonu (Quantum codes immune to collective decoherence and photon loss), Master Degree Thesis, Faculty of Physics, University of Warsaw, 01 2011, (pdf, in Polish)
• K. Banaszek, R. Demkowicz-Dobrzański, M. Karpinski, P. Migdał, C. Radzewicz,
  Quantum and semiclassical polarization correlations Opt. Comm. 283, 713-718 (2010) doi:10.1016/j.optcom.2009.10.061, arXiv:0908.3548

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Other stuff

• P. Migdał, Jak przesłać qubit światłowodem (How to sent a quibit over an optical fiber?), IX OSKNF (2010, slides, in Polish)
• Singlet state diagram explorer - coming soon(er or later)

$U\otimes U \otimes \ldots \otimes U$