Bennett's laws explained

Bennett's laws of quantum information are:

\geqslant 1 bit (classical),

1. 1 qubit

\geqslant 1 ebit (entanglement bit),

1. 1 ebit + 1 qubit

\geqslant 2 bits (i.e. superdense coding),

1. 1 ebit + 2 bits

\geqslant 1 qubit (i.e. quantum teleportation),

where

\geqslant indicates "can do the job of".

These principles were formulated around 1993 by Charles H. Bennett.

References

• Quantum Mechanics: The Physics of the Microscopic World, Benjamin Schumacher, The Teaching Company, lecture 21