An electron microscope that doesn’t destroy the sample
Quantum mechanics allows to measure the existence of an object without touching it, known as interaction-free measurement , . We want to develop an electron microscope based on this measurement principle in order to overcome the detrimental radiation damage. Read more in this press release, in the program overview below or find us on facebook.
A new microscopy tool based on quantum physics and electron microscopy will be investigated. The proposed Quantum Electron Microscope (QEM), see Ref.  for a possible implementation, may enable imaging of biological samples with radiation doses so small that they are non-lethal. The instrument will rely on the interaction-free (IFM) nondestructive measurement principle , which has been proven with photons , but has yet to be demonstrated with electrons. The development program seeks to advance the state-of-knowledge in order to assess the realism of such an instrument. In recent years, new approaches have emerged which allow for unprecedented levels of control over the quantum motion of electrons in free space. We seek to exploit these methods to make proof-of-principle demonstrations of the IFM measurement principle. We anticipate that these foundation experiments will have technology impact beyond microscopy. For example, extensions of the IFM principle allow for controlled entanglement of electron wavefunctions, enabling, for example demonstration of free electronbased CNOT.
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