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Quantum information science and technology

Asst. Prof. Christos Gagatsos, PhD

  • Paper Published in Physical Review Applied (Letter)
    12 Sep 2024

    Paper Published in Physical Review Applied (Letter)

    Our work “Optimum classical beam-position sensing” has been published in PRApplied in the letter format. The arXiv version can be found here.

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  • New paper in APL Quantum (Editor’s pick)
    27 Aug 2024

    New paper in APL Quantum (Editor’s pick)

    Our work “Exploring the possibility of a complex-valued non-Gaussianity measure for quantum states of light” is now published!

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  • IEEE ISIT 2024 Presentation and Paper
    17 Jul 2024

    IEEE ISIT 2024 Presentation and Paper

    Leo Clashin Bia presented his work “Receiver algorithms to approach the quantum limit of demodulating pulse position modulation” in Athens for the ISIT conference. The paper can be found here.

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  • New Work in Phys. Rev. A
    17 Jul 2024

    New Work in Phys. Rev. A

    Qipeng Qian published his first paper under my supervision (Qipeng has also published other works in the past). Congratulations, Qipeng! Our paper pertains to the newly introduced notion of Wigner entropy. You can read the arXiv version here and the published version here.

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  • Paper Published in Physical Review A
    5 Dec 2023

    Paper Published in Physical Review A

    Majorization relations proofs for enhancing the entanglement of a two-mode squeezed vacuum state, i.e., a maximally entangled state among all two-mode Gaussian states, by photon addition and subtraction, and generalized local filtration. Read the published version here and the arXiv version here.

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  • New Paper in Physical Review Research
    19 Sep 2023

    New Paper in Physical Review Research

    Our paper Bayesian mean square error for transmissivity sensing has been published in Phys. Rev. Research. Congratulations to Boyu Zhou and all for their great work!

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  • Quantum Bayesian Phase Sensing Work Published in Quantum Information Processing (Springer-Nature)
    3 Aug 2023

    Quantum Bayesian Phase Sensing Work Published in Quantum Information Processing (Springer-Nature)

    We work on one of the most well-known and important quantum sensing paradigms, that of sensing an optical phase. However, we consider the largely overlooked Bayesian approach. The literature on optical phase sensing in the frequentist approach (i.e., Fisher information approach) is vast, proving retrospectively the importance of said problem. In our work, we examine

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