000060830 001__ 60830 000060830 005__ 20190529115215.0 000060830 0247_ $$2doi$$a10.1103/PhysRevA.90.053402 000060830 0248_ $$2sideral$$a98281 000060830 037__ $$aART-2014-98281 000060830 041__ $$aeng 000060830 100__ $$aSolanpää, J. 000060830 245__ $$aOptimal control of high-harmonic generation by intense few-cycle pulses 000060830 260__ $$c2014 000060830 5060_ $$aAccess copy available to the general public$$fUnrestricted 000060830 5203_ $$aAt the core of attosecond science lies the ability to generate laser pulses of subfemtosecond duration. In tabletop devices the process relies on high-harmonic generation, where a major challenge is to obtain high yields and high cutoff energies required for the generation of attosecond pulses. We develop a computational method that can simultaneously resolve these issues by optimizing the driving pulses using quantum optimal control theory. Our target functional, an integral over the harmonic yield over a desired energy range, leads to a remarkable cutoff extension and yield enhancement for a one-dimensional model H atom. The physical enhancement process is shown to be twofold: the cutoff extension is of classical origin, whereas the yield enhancement arises from increased tunneling probability. The scheme is directly applicable to more realistic models and, within straightforward refinements, also to experimental verification. 000060830 536__ $$9info:eu-repo/grantAgreement/ES/UZ/UZ2012-CIE-06$$9info:eu-repo/grantAgreement/ES/MINECO/FIS2010-21282-C02-01$$9info:eu-repo/grantAgreement/EC/FP7/280879/EU/Time dynamics and ContROl in naNOStructures for magnetic recording and energy applications/CRONOS$$9info:eu-repo/grantAgreement/EC/FP7/267374/EU/Dynamical processes in open quantum systems: pushing the frontiers of theoretical spectroscopy/DYNAMO 000060830 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000060830 590__ $$a2.808$$b2014 000060830 591__ $$aOPTICS$$b16 / 88 = 0.182$$c2014$$dQ1$$eT1 000060830 591__ $$aPHYSICS, ATOMIC, MOLECULAR & CHEMICAL$$b9 / 34 = 0.265$$c2014$$dQ2$$eT1 000060830 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000060830 700__ $$0(orcid)0000-0003-0094-3490$$aBudagosky, J.A. 000060830 700__ $$aShvetsov-Shilovski, N. 000060830 700__ $$0(orcid)0000-0002-9253-7926$$aCastro, A.$$uUniversidad de Zaragoza 000060830 700__ $$aRubio, A. 000060830 700__ $$aRäsänen, E. 000060830 7102_ $$12004$$2405$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Teórica 000060830 773__ $$g90, 5 (2014), 053402 [5 pp]$$pPhys. rev., A At. mol. opt. phy.$$tPhysical review. A, Atomic, molecular, and optical physics$$x1050-2947 000060830 8564_ $$s653641$$uhttps://zaguan.unizar.es/record/60830/files/texto_completo.pdf$$yVersión publicada 000060830 8564_ $$s138107$$uhttps://zaguan.unizar.es/record/60830/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000060830 909CO $$ooai:zaguan.unizar.es:60830$$particulos$$pdriver 000060830 951__ $$a2019-05-29-11:40:28 000060830 980__ $$aARTICLE