Arrival time statistics from an absorbing many-particle detector can identify the single-particle momentum even in a spatially uniform beam, with explicit Fisher information limits in the sparse-beam case.
We now evaluate the density pn(t), for each fixed number n of arrivals
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Fisher information from quantum many-particle arrival time measurements
Arrival time statistics from an absorbing many-particle detector can identify the single-particle momentum even in a spatially uniform beam, with explicit Fisher information limits in the sparse-beam case.