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Observation of entanglement-dependent two-particle holonomic phase

J C Loredo¹, M A Broome¹, D H Smith¹

¹Centre for Engineered Quantum Systems, Centre for Quantum Computer and Communication Technology, and School of Mathematics and Physics, University of Queensland, Brisbane, Queensland 4072, Australia.

Physical Review Letters

|April 29, 2014

Summary

Researchers explored holonomic phases in entangled photons, discovering an entanglement-dependent phase that transitions from geometric to topological. This phase quantifies quantum correlations and offers new insights into multiparticle quantum systems.

Area of Science:

Quantum physics
Quantum information science

Background:

Holonomic phases, both geometric and topological, are fundamental concepts in physics with broad applications.
Their study in systems with quantum correlations, such as entangled particles, remains underexplored.

Purpose of the Study:

To experimentally demonstrate and characterize the holonomic phase of two locally evolving entangled photons.
To investigate the relationship between entanglement and the nature of the holonomic phase.
To theoretically establish holonomic phases as a direct quantifier of quantum correlations.

Main Methods:

Experimental manipulation of two entangled photons undergoing local evolution.
Observation and analysis of the resulting holonomic phase.
Theoretical modeling to link holonomic phases with quantum correlations.

Main Results:

Demonstrated an entanglement-dependent holonomic phase in two-photon systems.
Observed the transition of the holonomic phase from geometric to topological as entanglement varied.
Found increased resilience of the holonomic phase to evolutionary changes with higher entanglement.
Theoretically showed that holonomic phases can quantify quantum correlations.

Conclusions:

Holonomic phases exhibit entanglement-dependent behavior in quantum systems.
The study provides a novel method for quantifying quantum correlations using holonomic phases.
Opens new possibilities for studying holonomic phenomena in complex entangled quantum systems.

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