INTERFERENTSIYA NETOZHDESTVENNYKH CHASTITS. (Interference of the Nonidentical Particles).

V.L. Lyuboshits, M.I. Podgoretskii

Shao‐ping Wu, Gao‐xiang Li

Keyu Su, Yi Zhong, Shanchao Zhang +5 more

Quantum interference between identical single particles reveals the intrinsic quantum statistic nature of particles, which could not be interpreted through classical physics. Here, we demonstrate quantum interference between nonidentical bosons using a generalized beam splitter based on a quantum memory. The Hong-Ou-Mandel type interference between single photons and single magnons with high visibility is demonstrated, and the crossover from the bosonic to fermionic quantum statistics is observed by tuning the beam splitter to be non-Hermitian. Moreover, multiparticle interference that simulates the behavior of three fermions by three input photons is realized. Our work extends the understanding of the quantum interference effects and demonstrates a versatile experimental platform for studying and engineering quantum statistics of particles.

Christoph Dittel

Boris N. Zakhariev, Skiff N. Sokolov

A quantum mechanical problem concerning the penetration of two particles in the bound state (the complex particle) through the potential barrier is treated. Accounting for the internal structure of the complex particle leads to an effective spreading of the potential barrier that facilitates the penetration through the barrier. (auth)

Andrew Grant