An open quantum system loses its 'quantumness' when information about the state leaks into its surroundings. Researchers now show how this decoherence can be controlled between two incompatible regimes in the case of a single photon.
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Barreiro, J. Environmental effects controlled. Nature Phys 7, 927–928 (2011). https://doi.org/10.1038/nphys2150
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DOI: https://doi.org/10.1038/nphys2150
