Di Bello, G. (2024) Dynamics of open quantum systems: From the Rabi model to coupled qubits. Il nuovo cimento C, 47 (5). pp. 1-6. ISSN 1826-9885
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Abstract
Employing the worldline Monte Carlo technique, Matrix Product State simulations and a variational approach, we focused on the dissipative quantum Rabi model, revealing a Beretzinski-Kosterlitz-Thouless quantum phase transition under low bath coupling. Exploring the dynamics of a slow qubit coupled to a fast oscillator, we found functional relationships, analyzed couplings’ effects, and evaluated the qubit Bloch vector. Weak to intermediate bath coupling simplifies qubit state evaluation, while the ultra-strong coupling regime exhibits non-Markovian effects and entanglement growth. Recent investigations include the impact of baths on two interacting qubits, showcasing a method for quasi-fully non-decoherent qubit encoding. This work provides insights into open quantum systems, emphasizing potential applications in quantum computing and communication.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 09 Dec 2024 13:39 |
| Last Modified: | 09 Dec 2024 13:39 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23262 |
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