Now We Can See If That Cat Is Alive Or Dead: Peeking Inside Schrodinger's Box

Measuring a 27-dimensional quantum state is a time-consuming, multistage process using a technique called quantum tomography, which is similar to creating a 3D image from many 2D ones. Researchers have instead been able to apply direct measurement to do this in a single experiment with no post-processing. In a new paper they demonstrate direct measurements of the quantum state associated with the orbital-angular momentum. read more

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