Аннотация:
A quantum computer is a computation device operated by means of quantum mechanical phenomena.
There are many candidates that are being pursued for physically implementing the quantum computer.
The quantum logical gate based on the electron spin resonance (ESR) was studied in ref. [3].
In this paper, we discuss a construction of Controlled-Controlled-NOT (CCNOT) gate by using the nonrelativistic formulation of ESR.