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Entanglement between two spatially separated atomic modes
Karsten Lange1, Jan Peise1, Bernd Lücke1
1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany.
Science (New York, N.Y.)
|April 28, 2018
Summary
Researchers created entanglement between two separate ultracold atom clouds. This advance in quantum entanglement for identical particles opens new possibilities for quantum information applications and technologies.
Area of Science:
- Quantum physics
- Quantum information science
- Atomic physics
Background:
- Quantum technologies require large ensembles of entangled particles.
- Entanglement in ultracold neutral atoms has been achieved for thousands of particles.
- Entanglement in identical particles lacks clearly definable subsystems.
Purpose of the Study:
- To generate entanglement between two spatially separated clouds of ultracold identical particles.
- To enable the use of entangled states of indistinguishable particles for quantum information applications.
Main Methods:
- Prepared an ensemble of ultracold identical particles in a twin Fock state.
- Split the ensemble into two spatially separated clouds.
- Utilized particle-exchange symmetry inherent in identical particles.
Main Results:
- Successfully generated entanglement between the two separated clouds.
- Demonstrated control over entangled states of indistinguishable particles.
- Showcased the ability to address the separated clouds individually.
Conclusions:
- The experiment provides a novel method for generating entanglement between distinct subsystems of identical particles.
- This work paves the way for exploiting entanglement in indistinguishable particles for quantum computing, simulation, and metrology.
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