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Quantum Algorithms

Phase-resolved measurement of entangled states via common-path interferometry

arXiv
Authors: Andrew A. Voitiv, Mark T. Lusk, Mark E. Siemens

Year

2024

Paper ID

66432

Status

Preprint

Abstract Read

~2 min

Abstract Words

74

Citations

N/A

Abstract

We propose and experimentally demonstrate a method to directly measure the phase of biphoton states using an entangled mode as a collinear reference. The technique is demonstrated with entangled photonic spatial modes in the Laguerre-Gaussian basis, and it is applicable to any pure quantum system containing an exploitable reference state in its entanglement spectrum. As one particularly useful application, we use the new methodology to directly measure the geometric phase accumulation of entangled photons.

Why This Paper Matters

  • It adds a 2024 reference point for readers tracking recent quantum research.
  • We propose and experimentally demonstrate a method to directly measure the phase of biphoton states using an entangled mode as a collinear reference.

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