The symmetrization postulate in quantum mechanics is formally reflected in the appearance of an exchange phase governing the symmetry of identical-particle global states under particle swapping. Many indirect measurements of this fundamental phase have been reported thus far, but a direct observation has been achieved only recently for photons. Here, we propose a general scheme capable of directly measuring the exchange phase of any type of particle (bosons, fermions, or anyons), exploiting the operational framework of spatially localized operations and classical communication. We experimentally implement it on an all-optical platform, providing a proof of principle for different simulated exchange phases. As a by-product, we supply a direct measurement of the real bosonic exchange phase of photons. Additionally, we analyze the performance of the proposed scheme when mixtures of particles of different nature are injected. Our results confirm the symmetrization tenet and provide a tool to explore it in various scenarios. Finally, we show that the proposed setup is suited to generating indistinguishability-driven NOON states useful for quantum-enhanced phase estimation.

Wang Y., Piccolini M., Hao Z.-Y., Liu Z.-H., Sun K., Xu J.-S., et al. (2022). Proof-of-Principle Direct Measurement of Particle Statistical Phase. PHYSICAL REVIEW APPLIED, 18(6), 1-10 [10.1103/PhysRevApplied.18.064024].

Proof-of-Principle Direct Measurement of Particle Statistical Phase

Piccolini M.
Formal Analysis
;
Compagno G.
Membro del Collaboration Group
;
Lo Franco R.
Supervision
2022-12-08

Abstract

The symmetrization postulate in quantum mechanics is formally reflected in the appearance of an exchange phase governing the symmetry of identical-particle global states under particle swapping. Many indirect measurements of this fundamental phase have been reported thus far, but a direct observation has been achieved only recently for photons. Here, we propose a general scheme capable of directly measuring the exchange phase of any type of particle (bosons, fermions, or anyons), exploiting the operational framework of spatially localized operations and classical communication. We experimentally implement it on an all-optical platform, providing a proof of principle for different simulated exchange phases. As a by-product, we supply a direct measurement of the real bosonic exchange phase of photons. Additionally, we analyze the performance of the proposed scheme when mixtures of particles of different nature are injected. Our results confirm the symmetrization tenet and provide a tool to explore it in various scenarios. Finally, we show that the proposed setup is suited to generating indistinguishability-driven NOON states useful for quantum-enhanced phase estimation.
Settore FIS/03 - Fisica Della Materia
https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.18.064024
Wang Y., Piccolini M., Hao Z.-Y., Liu Z.-H., Sun K., Xu J.-S., et al. (2022). Proof-of-Principle Direct Measurement of Particle Statistical Phase. PHYSICAL REVIEW APPLIED, 18(6), 1-10 [10.1103/PhysRevApplied.18.064024].
File in questo prodotto:
File Dimensione Formato  
PhysRevApplied.18.064024.pdf

Solo gestori archvio

Descrizione: Articolo principale
Tipologia: Versione Editoriale
Dimensione 3.99 MB
Formato Adobe PDF
3.99 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/578189
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact