title: Bennett's laws
text: # Bennett's laws
  
  Bennett's laws of quantum information are:
  
  * 1 qubit $\geqslant$ 1 bit (classical),
  * 1 qubit $\geqslant$ 1 ebit (entanglement bit),
  * 1 ebit + 1 qubit $\geqslant$ 2 bits (i.e. superdense coding),
  * 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.
  
  