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Phonon Pair Creation by Inflating Quantum Fluctuations in an Ion Trap
Matthias Wittemer1, Frederick Hakelberg1, Philip Kiefer1
1Physikalisches Institut, Universität Freiburg, Hermann-Herder-Straße 3, 79104 Freiburg, Germany.
Physical Review Letters
|November 26, 2019
Summary
Researchers rapidly altered ion trapping fields, creating phonon pairs and squeezing ion motion. This quantum simulation mimics cosmological particle creation, revealing connections between squeezing, pair creation, and entanglement for quantum information processing.
Area of Science:
- Quantum physics
- Quantum information science
- Cosmology
Background:
- Quantum theory predicts unique phenomena under rapid environmental changes.
- Simulating cosmological events in laboratory settings is crucial for understanding fundamental physics.
Purpose of the Study:
- To experimentally investigate quantum fluctuations and their effects on ion motional states.
- To explore the relationship between squeezing, particle creation, and entanglement in a controlled quantum system.
- To establish a platform for cross-fertilizing concepts between cosmology and quantum information processing.
Main Methods:
- Utilizing a system of two ions trapped in a field.
- Rapidly switching the trapping field to induce quantum fluctuations.
- Observing the creation of phonon pairs and the squeezing of the ions' motional state.
Main Results:
- Successfully generated phonon pairs by rapidly altering the trapping field.
- Squeezed the motional state of the ions, analogous to cosmological particle creation.
- Observed the formation of spatial entanglement concurrent with squeezing and pair creation.
Conclusions:
- The experimental setup effectively simulates cosmological particle creation.
- Demonstrated causal links between motional squeezing, phonon pair creation, and spatial entanglement.
- The platform offers new avenues for studying quantum phenomena and advancing quantum information technologies.
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