Quantum computing is a new way of computing that uses the strange properties of quantum physics to perform calculations that are too hard for classical computers. Quantum computers use quantum bits, or qubits, which can be in a superposition of two states (0 and 1) at the same time. This means that qubits can store and process more information than normal bits. Quantum computers can also use **entanglement**, which is a phenomenon where two qubits can share a quantum state and influence each other even when they are far apart. This allows quantum computers to perform multiple operations at once and to solve problems faster and more efficiently.

**Quantum computing** can help solve complex problems in fields such as cryptography, finance, chemistry, physics, and artificial intelligence. For example, quantum computers can break some of the encryption methods that are used to secure online transactions and communications. This could pose a threat to cybersecurity and privacy, but it could also lead to new ways of encrypting data using quantum cryptography. Quantum computers can also optimize financial portfolios, simulate molecular structures and reactions, design new materials and drugs, and enhance machine learning and artificial intelligence.

Some references for this explanation are:

- https://www.investopedia.com/terms/q/quantum-computing.asp
- https://www.ibm.com/topics/quantum-computing
- https://www.technologyreview.com/2019/01/29/66141/what-is-quantum-computing/
- https://www.mckinsey.com/featured-insights/mckinsey-explainers/what-is-quantum-computing
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