The Bloch Sphere is a geometrical representation of a quantum bit or qubit. Instead of having bits we have qubits or quantum bits that can be zero and one at the same time. A quantum computer makes direct use of quantum mechanical phenomena, such as superposition and entanglement to perform operations. In information theory, one bit is typically defined as the uncertainty of a binary random variable that is 0 or 1 with equal probability until the information is gained when the value of such a variable becomes known. The two values can also be interpreted as logical values such as: true/false, yes/no, on/off or the signs (+/−) or any other two-valued states. A bit can have only one of two values the most common representation of these values are 0 and 1. A bit is the basic unit of information in computing and digital communications. But first if we look at how ordinary computer works we find that modern computers require data to be encoded into binary digits or (bits). To have an objective understanding of quantum computers that fits in with the reality of our everyday life we would need an objective understanding of quantum mechanics itself. A link to a video giving a classical or logical explanation of quantum mechanics and quantum computers. Quantum Computers a classical or objective understanding explaining 'time' as an an emergent property
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