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quant-ph2025
Temperature-induced measurement sensitivity enhancement via imaginary weak values
Lorena Ballesteros Ferraz, Alexandre Matzkin, Alok Kumar Pan
We investigate the potential of weak measurement and post-selection to enhance measurement sensitivity when the initial probe state is mixed. In our framework, the mixedness of the…
quant-ph2025
Characterizing entangled state update in different reference frames with weak measurements
Jawad Allam, Alex Matzkin
The evolution of the quantum state of a system upon measurement results in state update. In this work, we investigate the characterization of updated states of multi-partite entang…
quant-ph2024
Making sense of relativistic Wigner friend scenarios: a problem for unitary accounts of quantum measurements ?
J. Allam, A. Matzkin
Wigner-friend scenarios -- in which external agents describe a closed laboratory containing a friend making a measurement -- highlight the difficulties inherent to quantum theory w…