Quantum Technology shapes and defines the future
By General Engineer : Hesham Elsaid
Quantum physics, the physics of infinitesimal objects such as atoms and particles, is a parallel universe governed by strange laws radically different from those governing the larger objects around us.
Classical vs. Quantum Physics
In classical physics, things behave in ways we’re used to: objects stay where they are unless something moves them, and everything is predictable, like an apple on a table staying put until you pick it up.
But in the quantum world, things get weird. Tiny particles can act in surprising ways
Quantum physics is the study of how matter and energy behave at the tiniest scales, like atoms and particles of light.
Without understanding these quantum behaviors, we couldn’t design or make modern electronic devices.
Applications in our lives governed by the laws of quantum physics
1- Transistors (in smartphones and computers)
Transistors are tiny switches made from semiconductors like silicon.
Their operation depends on quantum mechanics of electrons moving through materials
2- Lasers (in barcode scanners, fiber optics, etc.)
Lasers work through a quantum process called stimulated emission, where photons (particles of light) cause excited atoms to release more photons of the same energy, creating a focused, powerful beam of light.
Laser applications span a wide range of fields, from optical disc reading and fiber-optic communications to microsurgery and advanced scientific research
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3-Magnetic resonance imaging (MRI)
is one of the most important applications of quantum physics (Shutterstock).
can be produced.
4- Global Positioning Systems: The first Global Positioning System (GPS) was launched in 1978. Today, these systems, which rely on quantum mechanics, are widely used in smartphones, car navigation systems, military equipment, and many other applications.
GPS, operate using atomic clocks embedded in satellites orbiting Earth. Unlike a pendulum clock, which relies on the movement of a pendulum and is affected by many variables, the accuracy of an atomic clock depends on cesium atoms, which are known for their constant frequency.
5- Quantum computing
Quantum computing will lead the second quantum revolution.
Unlike conventional computers, which use bits as the smallest unit of information, quantum computers utilizes qubits, which can exist in a superposition of states, enabling parallel computation.
It promises to solve problems in seconds that would take classical computers millions of years.
This technology promises breakthroughs in fields like drug discovery, materials science, and artificial intelligence.
UNESCO declared 2025 the International Year of Quantum Science and Technology, celebrating a science that has transformed our understanding of the universe and opened new horizons for technological development.
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