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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 ...
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.
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Circuit diagram of a charge qubit circuit. The island (dotted line) is formed by the superconducting electrode between the gate capacitor and the junction capacitance. In quantum computing , a charge qubit (also known as Cooper-pair box ) is a qubit whose basis states are charge states (i.e. states which represent the presence or absence of ...
Download as PDF; Printable version; In other projects ... This is a list of quantum computing terminology. Qubit. [1] [2] Quantum circuit. [3 ] [4] Quantum logic gate ...
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 ...
The language also supports macro-like definitions of possibly parametrized quantum circuits and their expansion, qubit measurement and recording of the outcome in classical memory, synchronization with classical computers with the WAIT instruction which pauses the execution of a Quil program until a classical program has ended its execution ...
Qubits are then encoded in the energy levels of the atoms. Initialization and operation of the computer is performed via the application of lasers on the qubits. [8] For example, the laser can accomplish arbitrary single qubit gates and a gate for universal quantum computation.