K
Khalil Harrabi
Researcher at King Fahd University of Petroleum and Minerals
Publications - 66
Citations - 2800
Khalil Harrabi is an academic researcher from King Fahd University of Petroleum and Minerals. The author has contributed to research in topics: Dye-sensitized solar cell & Flux qubit. The author has an hindex of 22, co-authored 64 publications receiving 2366 citations. Previous affiliations of Khalil Harrabi include University of London & Royal Holloway, University of London.
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Journal ArticleDOI
Noise spectroscopy through dynamical decoupling with a superconducting flux qubit
Jonas Bylander,Simon Gustavsson,Fei Yan,Fumiki Yoshihara,Khalil Harrabi,George Fitch,David G. Cory,David G. Cory,David G. Cory,Yasunobu Nakamura,Jaw-Shen Tsai,William D. Oliver +11 more
TL;DR: In this article, a superconducting qubit was used to probe the noise spectrum of a spin system with an energy-relaxation time T 1 = 12 μs.
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Quantum Coherent Tunable Coupling of Superconducting Qubits
Antti O. Niskanen,Khalil Harrabi,Fumiki Yoshihara,Yasunobu Nakamura,Seth Lloyd,Jaw-Shen Tsai +5 more
TL;DR: This work reports on the time-domain tunable coupling of optimally biased superconducting flux qubits by modulating the nonlinear inductance of an additional coupling element and parametrically induced a two-qubit transition that was otherwise forbidden.
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Decoherence of Flux Qubits due to 1 / f Flux Noise
TL;DR: It is demonstrated that, at an optimal bias condition where the noise sources are well decoupled, the coherence observed in the echo measurement is limited mainly by energy relaxation of the qubit.
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Recent advances in dye sensitized solar cells
Umer Mehmood,Saleem Ur Rahman,Khalil Harrabi,Ibnelwaleed A. Hussein,Basireddy V. Subba Reddy +4 more
TL;DR: In this article, a review examines the working principle, factors affecting the efficiency, and key challenges facing DSSCs, which comprises a sensitized semiconductor (photoelectrode) and a catalytic electrode (counter electrode) with an electrolyte sandwiched between them and their efficiency depends on many factors.
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Hybrid TiO2–multiwall carbon nanotube (MWCNTs) photoanodes for efficient dye sensitized solar cells (DSSCs)
TL;DR: In this paper, the photo conversion efficiency is highly dependent on the concentration of carbon nanotubes in the photoanode and a quantum modeling technique based on the density functional theory was used to investigate the thermodynamic aspects of the charge transport processes in DSSCs.