000075703 001__ 75703 000075703 005__ 20200117221642.0 000075703 0247_ $$2doi$$a10.1103/PhysRevA.97.053846 000075703 0248_ $$2sideral$$a106859 000075703 037__ $$aART-2018-106859 000075703 041__ $$aeng 000075703 100__ $$aQuijandria, F. 000075703 245__ $$aPT-symmetric circuit QED 000075703 260__ $$c2018 000075703 5060_ $$aAccess copy available to the general public$$fUnrestricted 000075703 5203_ $$aA parity-time (PT)-symmetric system emerging from a quantum dynamics is highly desirable in order to understand the possible implications of PT symmetry in the next generation of quantum technologies. In this work, we address this need by proposing and studying a circuit-QED architecture that consists of two coupled resonators and two qubits (each coupled to one resonator). By means of external driving fields on the qubits, we are able to tune gains and losses in the resonators. Starting with the quantum dynamics of this system, we show the emergence of the PT symmetry via the selection of both driving amplitudes and frequencies. We engineer the system such that a non-number-conserving dipole-dipole interaction emerges, introducing an instability at large coupling strengths. The PT symmetry and its breaking, as well as the predicted instability in this circuit-QED system, can be observed in a transmission experiment. 000075703 536__ $$9info:eu-repo/grantAgreement/ES/DGA/FENOL-GROUP$$9info:eu-repo/grantAgreement/ES/MINECO/FIS2014-55867$$9info:eu-repo/grantAgreement/ES/MINECO/MAT2014-53432-C5-1-R 000075703 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000075703 590__ $$a2.907$$b2018 000075703 591__ $$aPHYSICS, ATOMIC, MOLECULAR & CHEMICAL$$b13 / 36 = 0.361$$c2018$$dQ2$$eT2 000075703 591__ $$aOPTICS$$b28 / 95 = 0.295$$c2018$$dQ2$$eT1 000075703 592__ $$a1.268$$b2018 000075703 593__ $$aAtomic and Molecular Physics, and Optics$$c2018$$dQ1 000075703 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000075703 700__ $$0(orcid)0000-0001-7894-2426$$aNaether, U. 000075703 700__ $$aOzdemir, S.K. 000075703 700__ $$aNori, F. 000075703 700__ $$0(orcid)0000-0003-4478-1948$$aZueco, D.$$uUniversidad de Zaragoza 000075703 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada 000075703 773__ $$g97, 5 (2018), 053846 [14 pp]$$pPhys. rev., A$$tPhysical Review A$$x2469-9926 000075703 8564_ $$s885014$$uhttps://zaguan.unizar.es/record/75703/files/texto_completo.pdf$$yVersión publicada 000075703 8564_ $$s27482$$uhttps://zaguan.unizar.es/record/75703/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000075703 909CO $$ooai:zaguan.unizar.es:75703$$particulos$$pdriver 000075703 951__ $$a2020-01-17-22:04:47 000075703 980__ $$aARTICLE