Researcher:
Manatuly, A.

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Master Student

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A.

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Manatuly

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Manatuly, A.
Manatuly, Angsar

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2017 - 20192

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Researcher Of Publications: search.filters.isAuthorOfPublication.d35ebace-603a-4892-898e-de9742af07a7

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    PublicationOpen Access
    Thermal production, protection, and heat exchange of quantum coherences
    (American Physical Society (APS), 2017) Department of Physics; Çakmak, Barış; Müstecaplıoğlu, Özgür Esat; Manatuly, A.; Faculty Member; Department of Physics; College of Sciences; N/A; 1674; N/A
    We consider finite-sized atomic systems with varying number of particles which have dipolar interactions among them and are also under the collective driving and dissipative effect of a thermal photon environment. Focusing on the simple case of two atoms, we investigate the impact of different parameters of the model on the coherence contained in the system. We observe that, even though the system is initialized in a completely incoherent state, it evolves to a state with a finite amount of coherence and preserves that coherence in the long-time limit in the presence of thermal photons. We propose a scheme to utilize the created coherence in order to change the thermal state of a single two-level atom by having it repeatedly interact with a coherent atomic beam. Finally, we discuss the scaling of coherence as a function of the number of particles in our system up to N = 7.
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    PublicationOpen Access
    Collectively enhanced thermalization via multiqubit collisions
    (American Physical Society (APS), 2019) Niedenzu, Wolfgang; Kurizki, Gershon; Department of Physics; Müstecaplıoğlu, Özgür Esat; Roman-Ancheyta, Ricardo; Çakmak, Barış; Manatuly, A.; Faculty Member; Researcher; Department of Physics; College of Sciences; Graduate School of Sciences and Engineering; 1674; N/A; 252838; N/A
    We investigate the evolution of a target qubit caused by its multiple random collisions with N-qubit clusters. Depending on the cluster state, the evolution of the target qubit may correspond to its effective interaction with a thermal bath, a coherent (laser) drive, or a squeezed bath. In cases where the target qubit relaxes to a thermal state, its dynamics can exhibit a quantum advantage, whereby the target-qubit temperature can be scaled up proportionally to N-2 and the thermalization time can be shortened by a similar factor, provided the appropriate coherence in the cluster is prepared by nonthermal means. We dub these effects quantum superthermalization because of the analogies to superradiance. Experimental realizations of these effects are suggested.