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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.
Q-circuit Archived 2019-03-23 at the Wayback Machine is a macro package for drawing quantum circuit diagrams in LaTeX. Quantum Circuit Simulator (Davy Wybiral) (qcsimulator.github.io on GitHub) a browser-based quantum circuit diagram editor and simulator. Quantum Computing Playground (Quantum-Computing-Playground on GitHub) a browser-based ...
Entanglement swapping is a form of quantum teleportation. In quantum teleportation, the unknown state of a particle can be sent from one location to another using the combination of a quantum and classical channel. The unknown state is projected by Alice onto a Bell state and the result is communicated to Bob through the classical channel. [4]
[citation needed] In 1999, Gottesman and Chuang pointed out that one can prepare the probabilistic gates offline from the quantum circuit by using quantum teleportation. [4] The basic idea is that each probabilistic gate is prepared offline, and the successful event signal is teleported back to the quantum circuit.
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 ...
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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 ...
String diagrams for rigid categories can be defined as non-progressive plane graphs, i.e. the edges can bend backward. In the context of categorical quantum mechanics, this is known as the snake equation. The category of Hilbert spaces is rigid, this fact underlies the proof of correctness for the quantum teleportation protocol.