Nonlocal de Broglie wavelength of a two-particle system
E. J. S. Fonseca, Zoltan Paulini, P. Nussenzveig, Carlos Henrique Monken, Sebastião Pádua · Physical Review A · 2001
We show that it is possible to associate a de Broglie wavelength with a composite system even when the constituent particles are separated spatially. The nonlocal de Broglie wavelength $(\ensuremath{\lambda}/2)$ of a two-photon system separated spatially is measured with an appropriate detection system. The two-photon system is prepared in an entangled state in space-momentum variables. We propose that the same result can be obtained for a system of massive particles separated spatially in an entangled state in space-momentum variables.