0 a theory that explains the behaviour of elementary particles, both separately and in groups
In this manner, classical mechanics arise as the semiclassical limit of quantum mechanics.
Thus, superluminal signaling is not required to account for the results of any quantum entanglement experiment that agrees with the results predicted by quantum mechanics.
The central message of these disciplines is that quantum mechanics provides a great - sometimes exponential - improvement in the information processing power of a physical system.
Computing scientists are generating new insights into the foundations of quantum mechanics, which will be of value even if practical quantum computers are never built.
In quantum mechanics, unitary transformations represent reversible evolutions of a system.
It is a conceptual error to think that quantum mechanics can be understood just using probabilistic constructs.
In particular, the discreteness of quantum mechanics is key for quantum information and quantum computation.
To understand this, we may consider the analogy between quantum mechanics and a drum.
