# Abstract

The paper interprets the concept “operator in the separable complex Hilbert space”
(particalry, “Hermitian operator” as “quantity” is defined in the “classical” quantum
mechanics) by that of “quantum information”. As far as wave function is the characteristic
function of the probability (density) distribution for all possible values of a certain quantity to
be measured, the definition of quantity in quantum mechanics means any unitary change of
the probability (density) distribution. It can be represented as a particular case of “unitary”
qubits. The converse interpretation of any qubits as referring to a certain physical quantity
implies its generalization to non-Hermitian operators, thus neither unitary, nor conserving
energy. Their physical sense, speaking loosely, consists in exchanging temporal moments
therefore being implemented out of the space-time “screen”. “Dark matter” and “dark energy”
can be explained by the same generalization of “quantity” to non-Hermitian operators only
secondarily projected on the pseudo-Riemannian space-time “screen” of general relativity
according to Einstein's “Mach’s principle” and his field equation.