Quantum computer requires quantum arithmetic. The sophisticated design of a
reversible arithmetic logic unit (reversible ALU) for quantum arithmetic has
been investigated in this letter. We provide explicit construction of
reversible ALU effecting basic arithmetic operations. By provided the
corresponding control unit, the proposed reversible ALU can combine the
classical arithmetic and logic operation in a reversible integrated system.
This letter provides actual evidence to prove the possibility of the
realization of reversible Programmable Logic Device (RPLD) using reversible
ALU.