Computation theory 1 Controled SWAP gate 1 Conventional circuits 1 Data loss 1 Energy dissipation 1 Fredkin gate 1 Gate circuit 1 Input datas 1 MEMS 1 Mirrors Optical signal processing 1 Optical signal-processing 1 Reversible circuits 1 Reversible gates 1 SWAP gate 1 Timing circuits 1 controlled SWAP gate 1 optical signal processing 1 reversible circuit 1