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Sagnac interferometry using bright matter-wave solitons
J L Helm1, S L Cornish1, S A Gardiner1
1Department of Physics, Joint Quantum Center (JQC) Durham-Newcastle, Durham University, Durham DH1 3LE, United Kingdom.
Physical Review Letters
|April 18, 2015
Summary
Researchers studied bright matter-wave solitons in a toroidal trap. They found a specific velocity range for soliton Sagnac interferometry, considering quantum effects.
Area of Science:
- Quantum physics
- Atomic, molecular, and optical physics
Background:
- Bright matter-wave solitons are coherent matter waves.
- Toroidal traps confine particles in a ring.
- Soliton splitting and recombination are key experimental techniques.
Purpose of the Study:
- To investigate the behavior of bright solitons in a toroidal trap.
- To analyze the phase evolution during soliton splitting and recombination.
- To determine conditions for soliton Sagnac interferometry.
Main Methods:
- Utilizing an effective one-dimensional Gross-Pitaevskii equation.
- Employing analytical and numerical analysis.
- Simulating soliton dynamics in a rotating frame with barrier potentials.
Main Results:
- Identified a specific velocity regime for soliton Sagnac interferometry.
- Characterized the phase evolution of solitons during splitting and recombination.
- Quantified the impact of quantum uncertainty on the process.
Conclusions:
- Soliton Sagnac interferometry is feasible within a defined velocity range.
- Quantum uncertainty plays a role in the interferometry process.
- The study provides insights into controlling and utilizing matter-wave solitons.
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