What is Quantum Computing ?

Quantum computing is the use of quantum phenomenon such as superposition and entanglement to perform computations at a much faster rate compared to classical computers that we use today. Computers that perform quantum computations are known as quantum computers.

The most widely used Quantum computer model is the quantum circuit, based on the quantum bit, or “qubit”, which is somewhat analogous to the bit in classical computation. A qubit can be in a 1 or 0 quantum state, or in a superposition of the 1 and 0 states. When it is measured, however, it is always 0 or 1; the probability of either outcome depends on the qubit’s quantum state immediately prior to measurement.

Quantum computing movement began in 1998 when Isaac Chuang, Neil Gershenfeld and Mark Kubinec created the first quantum computer with 2 Qubits. IBM Q, Google Sycamore and Intel Tangle Lake are well known Quantum computers with close to or greater than 50 Qubits.

D-wave has Quantum computers with greater than 128 Qubits but based on Quantum Annealing. Quantum computers are expected to transform medicine by increasing drug discovery speeds, transform communications and artificial intelligence. In Blockchain world, they are expected to impact the cryptographic principles that power Blockchains.

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