Coherence behavior of strongly coupled bosonic modes
arXiv:2208.10649 · doi:10.1103/PhysRevA.106.032401
Abstract
We study the effect of the intermode coupling in the generation of coherence when two bosonic modes are bilinearly coupled. We consider the case for which the two modes are weakly coupled and the rotating-wave approximation (RWA) applies and the case for which they are strongly coupled and the (RWA) does not apply. Then, in the regime of validity of (RWA), there is no coherence generation solely due to squeezing effects, which means there is an exchange of excitation between the modes and negligible squeezing. On the other hand, if the two modes are strongly coupled coherence is generated by the squeezing interaction. For the system of two bosonic modes weakly coupled with a Markovian bath at temperature the coherence decreases with . In general, when both kinds of couplings (exchange of excitation and squeezing) are turned on the exchange of excitation contributes to generating more coherence in comparison with a purely squeezing coupling. Thus, the coherence decreases more slowly with the temperature when both couplings are present. Finally, we explore the case when only one of the two coupled modes interacts with a Markovian bath while the other one remains free from the environment. We observe that the intermode coupling induces oscillations in the coherence and fidelity dynamics similar to the behavior for the coupling with a non-Markovian environment.
References in corpus (41)
- Supplementary information for "Quantum supremacy using a programmable superconducting processor"
- Gaussian Quantum Information
- Quantifying Coherence
- Measure for the Degree of Non-Markovian Behavior of Quantum Processes in Open Systems
- Non-Markovian dynamics in open quantum systems
- Enhancing the sensitivity of the LIGO gravitational wave detector by using squeezed states of light
- Entanglement and non-Markovianity of quantum evolutions
- Chaos and the Quantum Phase Transition in the Dicke Model
- A nano heat engine beyond the Carnot limit
- Experimental demonstration of quantum effects in the operation of microscopic heat engines
- Experimental reconstruction of work distribution and verification of fluctuation relations at the full quantum level
- Experimental characterization of a spin quantum heat engine
- Quantum absorption refrigerator with trapped ions
- Observation of a quantum phase transition in the quantum Rabi model with a single trapped ion
- Coherence effects in the performance of the quantum Otto heat engine
- The role of quantum coherence in non-equilibrium entropy production
- Reversing the direction of heat flow using quantum correlations
- Experimental quantum compressed sensing for a seven-qubit system
- Quantifying coherence of Gaussian states
- Kraus representation of quantum evolution and fidelity as manifestations of Markovian and non-Markovian avataras
- Computational speed-up with a single qudit
- Computational speed-up in a single qudit NMR quantum information processor
- Holonomic quantum computation in the ultrastrong-coupling regime of circuit QED
- Quantum Signatures in the Quantum Carnot Cycle
- Dissipation-Assisted Quantum Information Processing with Trapped Ions
- Shortcut-to-adiabaticity quantum Otto refrigerator
- Employing Non-Markovian effects to improve the performance of a quantum Otto refrigerator
- Optimal continuous variable quantum teleportation with limited resources
- Thermal transport in out of equilibrium quantum harmonic chains
- Heat transport in harmonic oscillator systems with correlated baths: Application to optomechanical arrays
- Experimental assessment of physical realism in a quantum-controlled device
- Operational Resource Theory of Nonclassicality via Quantum Metrology
- Markovian evolution of strongly coupled harmonic oscillators
- Suppressing coherence effects in quantum-measurement based engines
- Rapid Quantum Squeezing by Jumping the Harmonic Oscillator Frequency
- Quantum coherence and speed limit in the mean-field Dicke model of superradiance
- Resilience of the superradiant phase against effects in the quantum Rabi dimer
- On the time optimal thermalization of single mode Gaussian states
- A study of coherence based measure of quantumness in (non) Markovian channels
- Negativity-Mutual Information conversion and coherence in two-coupled harmonic oscillators
- Coherence dynamics induced by attenuation and amplification Gaussian channels