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Qubit
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MoreNew World Translation of the Holy Scriptures
2013
This article is about the quantum computing unit. For other uses, see Qubit (disambiguation).
In quantum computing, a qubit (/ˈkjuːbɪt/) 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. A qubit is a two-state (or two-level) quantum-mechanical system, one of the simplest quantum systems displaying the peculiarity of quantum mechanics. Examples include the spin of the electron in which the two levels can be taken as spin up and spin down; or the polarization of a single photon in which the two states can be taken to be the vertical polarization and the horizontal polarization. In a classical system, a bit would have to be in one state or the other. However, quantum mechanics allows the qubit to be in a coherent superposition of both states simultaneously, a property that is fundamental to quantum mechanics and quantum computing.
Etymology
Bit versus qubit
Standard representation
Qubit states
Operations on qubits
Quantum entanglement
Quantum register
Physical implementations
Qubit storage
See also
Notes
References
Further reading
Last edited 3 days ago by Omnissiahs hierophant
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Qubit Article Talk Language Watch History Edit MoreNew World Translation of the Holy Scriptures 2013 This article is about the quantum computing unit. For other uses, see Qubit (disambiguation). In quantum computing, a qubit (/ˈkjuːbɪt/) 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. A qubit is a two-state (or two-level) quantum-mechanical system, one of the simplest quantum systems displaying the peculiarity of quantum mechanics. Examples include the spin of the electron in which the two levels can be taken as spin up and spin down; or the polarization of a single photon in which the two states can be taken to be the vertical polarization and the horizontal polarization. In a classical system, a bit would have to be in one state or the other. However, quantum mechanics allows the qubit to be in a coherent superposition of both states simultaneously, a property that is fundamental to quantum mechanics and quantum computing.
Etymology Bit versus qubit Standard representation Qubit states Operations on qubits Quantum entanglement Quantum register Physical implementations Qubit storage See also Notes References Further reading
Last edited 3 days ago by Omnissiahs hierophant RELATED ARTICLES Bell state Qutrit Unit of quantum information
Monogamy of entanglement Principle in quantum information science
quantum computing![Uploading w{589335e} (a6c11415-f41b-476d-9f7b-2ecb96649c63 id=0x7f0a019c tag=CreateIssueFragment) …]() Content is available under CC BY-SA 3.0 unless otherwise noted. Privacy policy Terms of UseDesktop " https://en.wikipedia.org/wiki/Qubit#:~:text=Open%20main%20menu,Desktop