Estimating the reduction time of quantum states

Abstract

An effective description of microscopic measurements is given, in which the precise moment of probing is not determined. Within this scenario we propose a scheme that relies on an "attempt" to make a forbidden simultaneous measurement of two incompatible observables. Although bound to failure in what concerns this goal, the process can lead to information on a possible non-vanishing time scale $\delta t$ involved in the collapsing of the wave function, even if the duration $\Delta t$ of the individual measurements is much larger than $\delta t$.

5 pages

References in corpus (6)

• Heisenberg's Uncertainty Principle
• Undoing a weak quantum measurement of a solid-state qubit
• Uncollapsing of a quantum state in a superconducting phase qubit
• Weak and strong measurement of a qubit using a switching-based detector
• Statistics of Measurement of Non-commuting Quantum Variables: Monitoring and Purification of a qubit
• Measuring position and moment together

Cited by in corpus (1)

• Wavefunction collapse through backaction of counting weakly interacting photons