Dynamics of decoherence in a noisy driven environment
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Quick Summary:
- Quantum correlations (QCs) are essential in quantum information science and quantum computation. They are pivotal for understanding the inherent non-locality in quantum mechanics. During quantum information processing, quantum systems are inevitably affected by their surrounding environment. These interactions result in quantum decoherence, which is key to comprehend the transition from quantum to classical behavior. In any real experiment, the simulation of the intended time-dependent Hamiltonian is inherently imperfect.
- Ergotropy refers to the maximum energy extractable from a quantum system through cyclic unitary process. In Markovian evolution, the future of the system depends only on its current state. In non- MARKOVIAN evolution, back-flow of information occurs from environment to system. Coherence-based measure of non-Markovianity is used to quantify the degree ofnon-MarkOVianity of the non-equilibrium decoherence process.
- Fig. 2 illustrates the impact of inversion memory capacity (spanning from 0.1 to 2) on the dynamics of entanglement during quantum teleportation. In the moderate-time scale, the fidelity under mixed noises surpasses that under pure relaxation noise. The Non-Markovian nature of the noise introduces a temporal correlation that affects the system’s response to environmental perturbations. This correlation can lead to a backflow of information from the environment to the system. Strategic manipulation of noise environment could potentially enhance qubit performance by exploiting memory effects. The interplay between different types of noise is crucial in understanding the stability and longevity of quantum Entanglement in realistic scenarios. The presence of mixed noises results in a higher concurrence compared to the scenario under purely relaxation noises.
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Original Coverage
Quantum correlations (QCs) are essential in quantum information science and quantum computation. They are pivotal for understanding the inherent non-locality in quantum mechanics. During quantum information processing, quantum systems are inevitably affected by their surrounding environment. These interactions result in quantum decoherence, which is key to comprehend the transition from quantum to classical behavior. In any real experiment, the simulation of the intended time-dependent Hamiltonian is inherently imperfect. Read full article
Work extraction from quantum coherence in non-equilibrium environment
Ergotropy refers to the maximum energy extractable from a quantum system through cyclic unitary process. In Markovian evolution, the future of the system depends only on its current state. In non- MARKOVIAN evolution, back-flow of information occurs from environment to system. Coherence-based measure of non-Markovianity is used to quantify the degree ofnon-MarkOVianity of the non-equilibrium decoherence process. Read full article
Non-Markovian noise mitigation in quantum teleportation: enhancing fidelity and entanglement
Fig. 2 illustrates the impact of inversion memory capacity (spanning from 0.1 to 2) on the dynamics of entanglement during quantum teleportation. In the moderate-time scale, the fidelity under mixed noises surpasses that under pure relaxation noise. The Non-Markovian nature of the noise introduces a temporal correlation that affects the system’s response to environmental perturbations. This correlation can lead to a backflow of information from the environment to the system. Strategic manipulation of noise environment could potentially enhance qubit performance by exploiting memory effects. The interplay between different types of noise is crucial in understanding the stability and longevity of quantum Entanglement in realistic scenarios. The presence of mixed noises results in a higher concurrence compared to the scenario under purely relaxation noises. Read full article
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Sources:
- Original Article
- Work extraction from quantum coherence in non-equilibrium environment
- Non-Markovian noise mitigation in quantum teleportation: enhancing fidelity and entanglement
Source: https://www.nature.com/articles/s41598-025-00815-8