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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Collective interference of composite two-fermion bosons.
Malte C Tichy1, Peter Alexander Bouvrie, Klaus Mølmer
1Lundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark.
Physical Review Letters
|February 2, 2013
Summary
Composite bosons show non-ideal behavior in interference due to fermion entanglement. This study quantifies how entanglement affects the Hong-Ou-Mandel-like statistics of these composite particles.
Area of Science:
- Quantum mechanics
- Quantum optics
- Condensed matter physics
Background:
- Composite particles, like two-fermion bosons, exhibit unique quantum behaviors.
- Interference experiments, such as the Hong-Ou-Mandel effect, are crucial for probing quantum statistics.
- Deviations from ideal bosonic behavior in composite systems are not fully understood.
Purpose of the Study:
- To investigate the interference patterns of many composite bosons.
- To establish a theoretical framework for analyzing the quantum statistics of interfering composites.
- To quantitatively link deviations in bosonic interference to the entanglement within composite bosons.
Main Methods:
- Representing states of many composite bosons as superpositions of bosons and fermions.
- Developing a theory for full Hong-Ou-Mandel-like counting statistics.
- Analyzing the role of fermion entanglement in composite boson interference.
Main Results:
- The interference of many composite bosons deviates from ideal bosonic behavior.
- A superposition model accurately describes the statistics of interfering composites.
- The degree of fermion entanglement within a composite boson directly correlates with the observed deviation from ideal bosonic interference.
Conclusions:
- The composite nature of two-fermion bosons significantly impacts their interference properties.
- Fermion entanglement is a key factor determining the departure from ideal bosonic statistics.
- This work provides a quantitative tool to understand and predict the quantum behavior of composite particles.
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