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When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
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In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
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The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
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Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
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Mimicking photon propagation through two-dimensional waveguide array by a one-dimensional waveguide array.

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    Researchers demonstrate a 1D waveguide array that effectively mimics 2D array photon propagation. This simplifies fabrication for quantum optics and quantum information applications.

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    Area of Science:

    • Quantum optics
    • Quantum information science
    • Photonics

    Background:

    • Photon propagation in waveguide arrays is crucial for quantum optics and information.
    • Existing 2D waveguide arrays offer complex light-guiding capabilities but are challenging to fabricate.

    Purpose of the Study:

    • To investigate the feasibility of using a 1D waveguide array to replicate the behavior of a 2D array.
    • To explore a simplified fabrication approach for advanced photonic devices.

    Main Methods:

    • Theoretical modeling of photon propagation.
    • Numerical simulations of light behavior in designed 1D and 2D waveguide structures.

    Main Results:

    • A specifically designed 1D waveguide array successfully mimics the photon propagation characteristics of a 2D array.
    • The 1D design offers a viable alternative with reduced fabrication complexity.

    Conclusions:

    • 1D waveguide arrays can serve as a practical substitute for 2D arrays in certain quantum applications.
    • This finding offers a pathway to more accessible and cost-effective development of photonic devices.