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  2. Qubit - Wikipedia

    en.wikipedia.org/wiki/Qubit

    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. A qubit is a two-state (or two-level) quantum-mechanical system , one of the simplest quantum systems displaying the peculiarity of quantum mechanics.

  3. Quantum computing - Wikipedia

    en.wikipedia.org/wiki/Quantum_computing

    Neuromorphic quantum computing (abbreviated as ‘n.quantum computing’) is an unconventional computing type of computing that uses neuromorphic computing to perform quantum operations. It was suggested that quantum algorithms, which are algorithms that run on a realistic model of quantum computation, can be computed equally efficiently with ...

  4. Superdense coding - Wikipedia

    en.wikipedia.org/wiki/Superdense_coding

    Superdense coding is a form of secure quantum communication. [4] If an eavesdropper, commonly called Eve, intercepts Alice's qubit en route to Bob, all that is obtained by Eve is part of an entangled state. Without access to Bob's qubit, Eve is unable to get any information from Alice's qubit.

  5. Superconducting quantum computing - Wikipedia

    en.wikipedia.org/wiki/Superconducting_quantum...

    A qubit is a generalization of a bit (a system with two possible states) capable of occupying a quantum superposition of both states. A quantum gate, on the other hand, is a generalization of a logic gate describing the transformation of one or more qubits once a gate is applied given their initial state.

  6. Quantum circuit - Wikipedia

    en.wikipedia.org/wiki/Quantum_circuit

    An n-qubit (reversible) quantum gate is a unitary mapping U from the space H QB(n) of n-qubit registers onto itself. Typically, we are only interested in gates for small values of n . A reversible n -bit classical logic gate gives rise to a reversible n -bit quantum gate as follows: to each reversible n -bit logic gate f corresponds a quantum ...

  7. Google has unveiled a new quantum computer chip that ... - AOL

    www.aol.com/news/google-unveiled-quantum...

    Google has unveiled its new chip, Willow, which outperforms current computer benchmarks. Google says the chip solves a 30-year hurdle and advances quantum computing for commercial uses.

  8. Google parent Alphabet jumps on quantum chip breakthrough - AOL

    www.aol.com/news/google-parent-alphabet-jumps...

    The building blocks of quantum computers, called "qubits", while being fast, are error-prone, making it hard to ensure quantum computers are reliable and commercial Google parent Alphabet jumps on ...

  9. Physical and logical qubits - Wikipedia

    en.wikipedia.org/wiki/Physical_and_logical_qubits

    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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