IOP | INSTITUTE OF PHYSICS | MARCH 14 2013

|| FEYNMAN'S 2-SLIT EXPERIMENT BROUGHT TO LIFE ||

The precise methodology of Richard Feynman’s famous double-slit thought-experiment — a cornerstone of quantum mechanics that showed how electrons behave as both a particle and a wave — has been followed in full for the very first time .

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IOP | SCIENCE | NEW JOURNAL OF PHYSICS | MARCH 2013

|| CONTROLLED DOUBLE-SLIT ELECTRON DIFFRACTION ||

ABSTRACT : Double-slit diffraction is a corner stone of quantum mechanics . It illustrates key features of quantum mechanics : interference and the particle-wave duality of matter .

In 1965 , Richard Feynman presented a thought experiment to show these features . Here we demonstrate the full realization of the famous thought experiment .

By placing a movable mask in front of a double-slit to control the transmission through the individual slits , probability distributions for single- and double-slit arrangements were observed .

Also , by recording single electron detection events diffracting through a double-slit , a diffraction pattern was built up from individual events .

CONCLUSION : In this paper , we show a full realization of Feynman's thought experiment and illustrate key features of quantum mechanics : interference and the wave–particle duality of matter .

By controlling the transmission through the individual slits of a double-slit we were able to observe the diffraction patterns from slit 1 ( P1 ) , slit 2 ( P2 ) , and both ( P12 ) , thus observing the wave properties of electrons .

Also, by recording single electron detection events diffracting through a double-slit we were able to build up a diffraction pattern , thus observing the particle properties of electrons .

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