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Modified Bose-Einstein condensation in an optical quantum gas
Mario Vretenar1, Chris Toebes1, Jan Klaers2
1Adaptive Quantum Optics (AQO), MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE, Enschede, The Netherlands.
Nature Communications
|October 1, 2021
Summary
Controlling open quantum systems involves understanding environmental interactions. This study reveals how photonic Bose-Einstein condensates avoid particle loss and interference by adjusting their frequency in controlled environments.
Area of Science:
- Quantum Optics
- Condensed Matter Physics
Background:
- Open quantum systems are influenced by their environment, affecting phenomena like spontaneous emission.
- Controlling these systems requires understanding the underlying physical mechanisms governing their state.
- Environmental feedback, such as from reflecting surfaces, significantly impacts quantum emitters.
Purpose of the Study:
- To investigate Bose-Einstein condensation (BEC) in a photonic Bose gas under controlled dissipation and feedback.
- To systematically study BEC formation under non-equilibrium conditions.
- To reveal the physical mechanisms of BEC formation that are typically obscured in thermal equilibrium.
Main Methods:
- Experimental investigation of a photonic Bose gas.
- Controlled manipulation of the system's environment, including dissipation and feedback.
- Systematic measurements of Bose-Einstein condensation under varying conditions.
Main Results:
- Bose-Einstein condensates were observed in a photonic Bose gas with controlled environmental interactions.
- The study provides a systematic picture of BEC under non-equilibrium conditions.
- It was shown that adjusting the condensate's frequency helps avoid particle loss and destructive interference.
Conclusions:
- Environmental control offers a pathway for deliberate manipulation of open quantum systems.
- Photonic Bose-Einstein condensates actively adapt to their environment to minimize losses.
- This research uncovers key physical mechanisms in BEC formation under non-equilibrium dynamics.
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