An Interaction-Free Quantum Shutter
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We give a proposal for the physical implementation of a quantum shutter. This shutter is a mechanism able to close the passage of light through a slit when present. As it must be a quantum mechanical object, able to show superposition, interesting quantum effects are observed. Finally, we review some applications of the quantum shutter to build quantum memories and a CNOT gate.
7 pages. 3 figures. Early version. Comments are welcome
7 pages. 3 figures. Early version. Comments are welcome