Superoperator
= Superoperator
A <linear map> between spaces of <linear operators>. A physical <quantum channel> is a superoperator that is trace preserving and <completely positive>; a general superoperator need not have either property.
= Superoperator
A <linear map> between spaces of <linear operators>. A physical <quantum channel> is a superoperator that is trace preserving and <completely positive>; a general superoperator need not have either property.