Spectral signatures of non-thermal baths in quantum thermalization
| Autor: | Özgür E. Müstecaplıoğlu, R. Román-Ancheyta, Barış Çakmak |
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| Přispěvatelé: | Müstecaplıoğlu, Özgür Esat (ORCID 0000-0002-9134-3951 & YÖK ID 1674), Roman-Ancheyta, Ricardo, Çakmak, Barış, College of Sciences, Department of Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Quantum optics Quantum Physics Statistical Mechanics (cond-mat.stat-mech) Physics and Astronomy (miscellaneous) Field (physics) Materials Science (miscellaneous) Measure (physics) FOS: Physical sciences Quantum simulator Spectral density Mathematical Physics (math-ph) Atomic and Molecular Physics and Optics Coherence Coherent light Incoherent operations Resonance fluorescence Quantum mechanics Quantum chemistry Qubits Electrical and Electronic Engineering Quantum Physics (quant-ph) Quantum thermodynamics Quantum Condensed Matter - Statistical Mechanics Mathematical Physics |
| Zdroj: | Quantum Science and Technology |
| Popis: | We show that certain coherences, termed as heat-exchange coherences, which contribute to the thermalization process of a quantum probe in a repeated interactions scheme, can modify the spectral response of the probe system. We suggest the use of the power spectrum as a way to experimentally assess the apparent temperature of non-thermal atomic clusters carrying such coherences and also prove that it is useful to measure the corresponding thermalization time of the probe, assuming some information is provided on the nature of the bath. We explore this idea in two examples in which the probe is assumed to be a single-qubit and a single-cavity field mode. Moreover, for the single-qubit case, we show how it is possible to perform a quantum simulation of resonance fluorescence using such repeated interactions scheme with clusters carrying different class of coherences. Scientific and Technological Research Council of Turkey (TÜBİTAK); EU-COST Action |
| Databáze: | OpenAIRE |
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