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Updated: Apr 7, 2026
09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
15.2K
Quantum correlations and energy currents across three dissipative oscillators.
Antonio A Valido1, Antonia Ruiz1, Daniel Alonso1
1Instituto Universitario de Estudios Avanzados (IUdEA) and Departamento de Física, Universidad de La Laguna, La Laguna 38203, Spain.
Summary
Energy current and quantum correlations in a three-mode chain remain largely independent, even with strong quantum correlations like entanglement. Quantum discord can be enhanced using squeezed thermal bath states and temperature gradients.
Area of Science:
- Quantum physics
- Condensed matter physics
- Quantum information theory
Background:
- Understanding energy transport in quantum systems is crucial.
- Quantum correlations, including entanglement and discord, play a significant role in quantum phenomena.
- Dissipation significantly impacts quantum system dynamics.
Purpose of the Study:
- To investigate the stationary properties of energy current.
- To analyze quantum correlations in a three-mode chain under Ohmic and super-Ohmic dissipation.
- To explore the relationship between energy transport and quantum correlations.
Main Methods:
- Numerical analysis of a three-mode chain model.
- Calculation of stationary energy current properties (mean value and fluctuations).
- Quantification of various quantum correlations: two-mode discord, bipartite entanglement, and genuine tripartite entanglement.
Main Results:
- The energy current's stationary properties are insensitive to the emergence of diverse quantum correlations.
- Rich quantum correlations, including entanglement and discord, do not affect energy current fluctuations.
- Quantum discord can be enhanced by using initially squeezed thermal bath states and temperature gradients.
Conclusions:
- Energy transport and quantum correlations exhibit a decoupling in the studied system.
- Quantum correlations can be actively controlled and enhanced through specific bath states and thermal gradients.
- The findings provide insights into quantum thermodynamics and information processing in open quantum systems.
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