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Related Experiment Video

Updated: Apr 16, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Particle statistics affects quantum decay and Fano interference.

Andrea Crespi¹, Linda Sansoni², Giuseppe Della Valle^1,3

¹Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy.

Physical Review Letters

|March 21, 2015

Summary

This summary is machine-generated.

Particle statistics significantly influence quantum decay. Bosons exhibit fractional decay due to bound states in the continuum, while fermions experience complete decay because of the Pauli exclusion principle.

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Area of Science:

Quantum mechanics
Quantum optics
Many-body physics

Background:

Quantum mechanical decay, Fano interference, and bound states in the continuum are fundamental phenomena across physics.
Understanding multiparticle quantum decay is crucial for various quantum technologies.

Purpose of the Study:

To experimentally investigate the influence of particle statistics on quantum mechanical decay in a multiparticle system.
To simulate quantum decay in a two-photon system within a Fano-Anderson model.

Main Methods:

Propagation of two-photon states in engineered photonic lattices.
Simulation of quantum decay for two non-interacting particles in a multilevel Fano-Anderson model.
Experimental observation of decay dynamics for bosonic and fermionic particles.

Main Results:

Fractional quantum mechanical decay was observed for bosonic particles when a bound state in the continuum was present.
Complete quantum mechanical decay was observed for fermionic particles under identical conditions.
The Pauli exclusion principle was identified as the cause for complete decay in fermions, preventing occupation of the bound state.

Conclusions:

Particle statistics profoundly affect quantum mechanical decay in multiparticle systems.
The presence of a bound state in the continuum, combined with particle statistics, can tune decay from fractional to complete.
Experimental findings highlight the role of quantum statistics in controlling quantum decay processes.