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Quantum mechanics is a fundamental theory in physics that describes the behavior of nature at and below the scale of atoms.  It is the foundation of all quantum physics, which includes quantum chemistry, quantum field theory, quantum technology, and quantum information science.

Quantum mechanics arose gradually from theories to explain observations that could not be reconciled with classical physics, such as Max Planck's solution in 1900 to the black-body radiation problem, and the correspondence between energy and frequency in Albert Einstein's 1905 paper, which explained the photoelectric effect. These early attempts to understand microscopic phenomena, now known as the "old quantum theory", led to the full development of quantum mechanics in the mid-1920s by Niels Bohr, Erwin Schrödinger, Werner Heisenberg, Max Born, Paul Dirac and others. The modern theory is formulated in various specially developed mathematical formalisms. In one of them, a mathematical entity called the wave function provides information, in the form of probability amplitudes, about what measurements of a particle's energy, momentum, and other physical properties may yield.more resarch results in the future.  

Quantum mechanics is the field of physics that explains how extremely small objects simultaneously have the characteristics of both particles (tiny pieces of matter) and waves (a disturbance or variation that transfers energy). Physicists call this the “wave-particle duality.”

The particle portion of the wave-particle duality involves how objects can be described as “quanta.” A quanta is the smallest discrete unit (such as a particle) of a natural phenomenon in a system where the units are in a bound state. For example, a quanta of electromagnetic radiation, or light, is a photon. A bound state is one where the particles are trapped. One example of a bound state is the electrons, neutrons, and protons that are in an atom.

To be “quantized” means the particles in a bound state can only have discrete values for properties such as energy or momentum. For example, an electron in an atom can only have very specific energy levels. This is different from our world of macroscopic particles, where these properties can be any value in a range. A baseball can have essentially any energy as it is thrown, travels through the air, gradually slows down, then stops.

Quantum entanglement can be used for communication by taking advantage of the unique correlations exhibited by entangled qubits. We can use entangled qubits to create instantaneous agreement on information across very long distances. While quantum entanglement doesn't allow for communication faster than the speed of light, instant agreement can still be used for applications like High Performance Computing (HPC) and ultra-secure communications.

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Keywords: Quntum Mechanics, Quantum Communication, Quantum Physics, Quntum Theory, Quantum Entanglement, Next-Generation Technology