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In matters relating to quantum information theory, it is convenient to work with the simplest possible unit of information: the two-state system of the qubit.The qubit functions as the quantum analog of the classic computational part, the bit, as it can have a measurement value of both a 0 and a 1, whereas the classical bit can only be measured as a 0 or a 1.
This circuit consists of both quantum gates and measurements. Measurement is a quantum phenomenon that does not occur in classical circuits. In quantum information theory, a quantum circuit is a model for quantum computation, similar to classical circuits, in which a computation is a sequence of quantum gates, measurements, initializations of ...
Additionally, gate teleportation is a key component of magic state distillation, a technique that can be used to overcome the limitations of the Eastin-Knill theorem. [ 3 ] Quantum gate teleportation has been demonstrated in various types of quantum computers, including linear optical, [ 4 ] superconducting quantum computing , [ 5 ] and trapped ...
Quantum circuit to create Bell state | + . Although there are many possible ways to create entangled Bell states through quantum circuits , the simplest takes a computational basis as the input, and contains a Hadamard gate and a CNOT gate (see picture).
Common quantum logic gates by name (including abbreviation), circuit form(s) and the corresponding unitary matrices. In quantum computing and specifically the quantum circuit model of computation, a quantum logic gate (or simply quantum gate) is a basic quantum circuit operating on a small number of qubits.
A quantum circuit diagram implementing a Toffoli gate from more primitive gates. A quantum gate array decomposes computation into a sequence of few-qubit quantum gates. A quantum computation can be described as a network of quantum logic gates and measurements.
Quantum teleportation promises a leap into the next great era of computing -- but first we've got to get it working consistently. Scientists at the Kavli Institute of Nanoscience Delft say they've ...
The choice of whether to measure a qubit before, after, or during an operation conditioned on that qubit will have no observable effect on a circuit's final expected results. Thanks to the deferred measurement principle, measurements in a quantum circuit can often be shifted around so they happen at better times. For example, measuring qubits ...