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Explicit memories, also known as declarative memories, are consciously remembered, recalled, and reported. Studying for a chemistry exam involves material that will become part of explicit memory. There are two types of explicit memory: episodic and semantic.
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Explicit formulas for photon number discrimination with on/off detectors.

Filippo M Miatto, Akbar Safari, Robert W Boyd

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    |August 22, 2018
    PubMed
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    Researchers developed a method to accurately identify photon numbers using simple on/off detectors. This technique provides unbiased formulas for quantum information processing, improving optical quantum technologies.

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    Area of Science:

    • Quantum optics
    • Quantum information processing

    Background:

    • Accurate discrimination of Fock states is crucial for quantum information processing.
    • Sophisticated photon number discriminating detectors are complex and costly.

    Purpose of the Study:

    • To develop an alternative method for Fock state discrimination using on/off detectors.
    • To provide analytical expressions for detection probabilities and photon number estimation.

    Main Methods:

    • Derivation of analytical expressions for detection probability with varying photons and detectors.
    • Inclusion of quantum efficiency and false count probability.
    • Application of Bayes' theorem for inverting conditional probability.

    Main Results:

    • An explicit analytical formula for detection probability was derived.
    • A method for unbiased estimation of input photon numbers was established.
    • Ready-to-use formulas for practical applications were presented.

    Conclusions:

    • The developed method offers a practical and accurate approach to Fock state discrimination.
    • This technique enhances the capabilities of optical quantum information processing.
    • The provided formulas facilitate unbiased photon number estimation.