![]() Li, C.-M., Lambert, N., Chen, Y.-N., Chen, G.-Y., Nori, F.: Witnessing quantum coherence: from solid-state to biological systems. Huelga, S., Plenio, M.: Vibrations, quanta and biology. Levi, F., Mintert, F.: A quantitative theory of coherent delocalization. Rebentrost, P., Mohseni, M., Aspuru-Guzik, A.: Role of quantum coherence and environmental fluctuations in chromophoric energy transport. Lloyd, S.: Quantum coherence in biological systems. Vazquez, H., Skouta, R., Schneebeli, S., Kamenetska, M., Breslow, R., Venkataraman, L., Hybertsen, M.: Probing the conductance superposition law in single-molecule circuits with parallel paths. Karlström, O., Linke, H., Karlström, G., Wacker, A.: Increasing thermoelectric performance using coherent transport. 112, 030602 (2014)Ĭorrea, L.A., Palao, J.P., Alonso, D., Adesso, G.: Quantum-enhanced absorption refrigerators. RoBnagel, J., Abah, O., Schmidt-Kaler, F., Singer, K., Lutz, E.: Nanoscale heat engine beyond the Carnot limit. Narasimhachar, V., Gour, G.: Low-temperature thermodynamics with quantum coherence. Ćwikliński, P., Studziński, M., Horodecki, M., Oppenheim, J.: Towards fully quantum second laws of thermodynamics: limitations on the evolution of quantum coherences. Skrzypczyk, P., Short, A.J., Popescu, S.: Work extraction and thermodynamics for individual quantum systems. Lostaglio, M., Jennings, D., Rudolph, T.: Description of quantum coherence in thermodynamic processes requires constraints beyond free energy. Rodrııguez-Rosario, C.A., Frauenheim, T., Aspuru-Guzik, A.: Thermodynamics of quantum coherence. Lostaglio, M., Korzekwa, K., Jennings, D., Rudolph, T.: Quantum coherence, time-translation symmetry, and thermodynamics. Horodecki, M., Oppenheim, J.: Fundamental limitations for quantum and nanoscale thermodynamics. Streltsov, A., Adesso, G., Plenio, M.B.: Colloquium: quantum coherence as a resource Rev. Horodecki, R., Horodecki, P., Horodecki, M., Horodecki, K.: Quantum entanglement. Maccone, L., Pati, A.K.: Stronger uncertainty relations for all incompatible observables. Schrödinger, E.: Zum heisenbergschen unschärfeprinzip. Robertson, H.P.: The uncertainty principle. Heisenberg, W.: Über den anschaulichen inhalt der quantentheoretischen. Our results suggest that the indefinite causal order along with a tiny amount of quantum discord can act as a resource in creating nonzero quantum coherence in the absence of entanglement. This finding may have some interesting applications on its own where discord can be consumed as a resource. We find that when the indefinite causal order of channels acts on one half of the entangled pair, then the shared state loses entanglement, but can retain nonzero quantum discord. We show this specifically for the superposition of two completely depolarizing channels, two partially depolarizing channels and one completely depolarizing channel along with a unitary operator. ![]() Here, we present a method for the creation of quantum coherence at a remote location via the use of entangled state and indefinite causal order. However, if there is a noisy channel acting on one side of the shared resource, then it is not possible to create perfect quantum coherence remotely. Quantum coherence of an arbitrary qubit can be created at a remote location using maximally entangled state, local operation and classical communication. To extend v's answer and link it to some concerns in your question:Ĭoherences are the phase relationships between sections of our system.Īs you noted, coherence is related to the superposition of states $|\psi\rangle = w_a |a\rangle w_b e^$ a coherence, because its magnitude represents the strength of the phase relationship between the states, and the phase of one is precisely the "averaged" phase relationship of the mixtures.Quantum coherence is a prime resource in quantum computing and quantum communication. ![]()
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