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Dynamic Stark shift induced by a single photon packet.

D Valente, F Brito, T Werlang

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    |April 29, 2017
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    Summary
    This summary is machine-generated.

    A single photon can create a dynamic Stark shift in a two-level system (TLS). This quantum effect, observed via waveguide interference, enables autonomous quantum control for quantum information processing and thermodynamics.

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    Area of Science:

    • Quantum optics
    • Atomic physics
    • Quantum information science

    Background:

    • The dynamic Stark shift describes an atom's interaction with electromagnetic fields.
    • Understanding these shifts is crucial for controlling quantum systems.

    Purpose of the Study:

    • To investigate the induction of a time-dependent dynamical Stark shift on a two-level system (TLS) using a single-photon wave packet.
    • To propose an experimental method for observing this effect and explore its applications.

    Main Methods:

    • A non-perturbative, fully quantum treatment was used to analyze the dynamics of both the electromagnetic field and the TLS.
    • The study proposes measuring interference patterns within a 1D waveguide to detect the time-dependent frequency shift.

    Main Results:

    • Demonstrated that a propagating single-photon wave packet can induce a time-dependent dynamical Stark shift on a TLS.
    • Proposed a feasible experimental method for observing this quantum phenomenon.

    Conclusions:

    • The observed effect offers a novel pathway for autonomous quantum control without relying on classical external fields.
    • Potential applications include advancements in quantum information processing and quantum thermodynamics.