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The purpose of quantum computing focuses on building an information theory with the features of quantum mechanics: instead of encoding a binary unit of information (), which can be switched to 1 or 0, a quantum binary unit of information (qubit) can simultaneously turn to be 0 and 1 at the same time, thanks to the phenomenon called superposition.
The general definition of a qubit as the quantum state of a two-level quantum system.In quantum computing, a qubit (/ ˈ k juː b ɪ t /) or quantum bit is a basic unit of quantum information—the quantum version of the classic binary bit physically realized with a two-state device.
Just as the bit is the basic concept of classical information theory, the qubit is the fundamental unit of quantum information.The same term qubit is used to refer to an abstract mathematical model and to any physical system that is represented by that model.
Measurement can even be randomly and concurrently interleaved qubit by qubit, since the measurements assignment of one qubit will limit the possible value-space from the other entangled qubits. Even though the equalities holds, the probabilities for measuring the possible outcomes may change as a result of applying F , as may be the intent in a ...
A logical qubit specifies how a single qubit should behave in a quantum algorithm, subject to quantum logic operations which can be built out of quantum logic gates. However, issues in current technologies preclude single two-state quantum systems , which can be used as physical qubits, from reliably encoding and retaining this information for ...
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99.944 (1 qubit max) 98.25 (2 qubits median) 99.1 (2 qubits max) 20 October 9, 2023 [33] 16 [34] M Squared Lasers: Maxwell Neutral atoms in optical lattices 99.5 (3-qubit gate), 99.1 (4-qubit gate) [35] 200 [36] November 2022: Oxford Quantum Circuits Lucy [37] Superconducting 8 2022: Oxford Quantum Circuits OQC Toshiko [38] Superconducting 32 ...
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