What is Quantum Computing?


In definition, Quantum Computing are the computer or machines that use the properties of quantum physics to store data and performs computation, by using it will very benefit for certain task where they could vastly outperform to computer or even the best supercomputers.

Normal computer is encoded information in binary, or we called "Bits" that can be either 0 or 1, but in quantum computer, is using quantum bit instead of binary, or we called as "qubit".

Qubits are made use physical system for example spin of an electron or the orientation of a photon. These systems can be in many different arrangements all at once, a property known as quantum superposition.

Besides, qubits can be inextricably linked together using a phenomenon called quantum entanglement.

However, quantum computing is still in its early stages. Challenges like keeping qubits stable (avoiding decoherence) and reducing errors are significant hurdles. While companies like IBM and Google are making progress, practical, large-scale quantum computers are likely years away.

An unexpected aspect is that quantum computing could impact cryptography significantly, with the potential to break widely used encryption methods like RSA, prompting research into quantum-resistant algorithms, as noted by McKinsey.

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