Last time, we discussed the quantum teleportation protocol, which relies on the phenomenon of quantum entanglement to move an arbitrary quantum state from one qubit to another, even if they are spatially separated. Today, we shall continue exploring the scenarios enabled by entanglement, by looking at the concept called “superdense coding”. It allows communicating two classical bits of information between two parties, by moving only a single qubit between them.
Some time ago I blogged about new Omnisharp features – support for analyzers and support for Editorconfig. Those were at the time two of the most requested features on Github that we had. Today I wanted to let you know that we just shipped another one of those hugely requested functionalities – support for unimported types. In fact, since those previous two have been dealt with, this was the most requested feature that we had.
In the previous part of the series we discussed how quantum theory prohibits copying of an arbitrary quantum state. In computing terms, this means that regardless of the richness of features provided by high-level quantum-specific languages such as Q#, we cannot implement a classical functionality of copy-and-paste on a quantum computer.
It turns out, however, that we can achieve a cut-and-paste type of effect, through a remarkable process of quantum teleportation.