000108397 001__ 108397
000108397 005__ 20230519145437.0
000108397 0247_ $$2doi$$a10.1039/d1sc00564b
000108397 0248_ $$2sideral$$a123407
000108397 037__ $$aART-2021-123407
000108397 041__ $$aeng
000108397 100__ $$0(orcid)0000-0002-6184-3920$$aGimeno, I
000108397 245__ $$aBroad-band spectroscopy of a vanadyl porphyrin: a model electronuclear spin qudit
000108397 260__ $$c2021
000108397 5060_ $$aAccess copy available to the general public$$fUnrestricted
000108397 5203_ $$aWe explore how to encode more than a qubit in vanadyl porphyrin molecules hosting a S = 1/2 electronic spin coupled to a I = 7/2 nuclear spin. The spin Hamiltonian and its parameters, as well as the spin dynamics, have been determined via a combination of electron paramagnetic resonance, heat capacity, magnetization and on-chip magnetic spectroscopy experiments performed on single crystals. We find low temperature spin coherence times of micro-seconds and spin relaxation times longer than a second. For sufficiently strong magnetic fields (B > 0.1 T, corresponding to resonance frequencies of 9-10 GHz) these properties make vanadyl porphyrin molecules suitable qubit realizations. The presence of multiple equispaced nuclear spin levels then merely provides 8 alternatives to define the ''1'' and ''0'' basis states. For lower magnetic fields (B < 0.1 T), and lower frequencies (<2 GHz), we find spectroscopic signatures of a sizeable electronuclear entanglement. This effect generates a larger set of allowed transitions between different electronuclear spin states and removes their degeneracies. Under these conditions, we show that each molecule fulfills the conditions to act as a universal 4-qubit processor or, equivalently, as a d = 16 qudit. These findings widen the catalogue of chemically designed systems able to implement non-trivial quantum functionalities, such as quantum simulations and, especially, quantum error correction at the molecular level.
000108397 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E09-17R-Q-MAD$$9info:eu-repo/grantAgreement/ES/DGA/E31-17R$$9info:eu-repo/grantAgreement/EC/H2020/862893/EU/Molecular spin qudits offering new hope for quantum computing/FATMOLS$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 862893-FATMOLS$$9info:eu-repo/grantAgreement/ES/MICINN/CTQ2015-64486-R$$9info:eu-repo/grantAgreement/ES/MICINN/CTQ2015-68370-P$$9info:eu-repo/grantAgreement/ES/MICINN/MAT2017-86826-R$$9info:eu-repo/grantAgreement/ES/MICINN/PCI2018-093116$$9info:eu-repo/grantAgreement/ES/MICINN/PGC2018-098630-B-I00$$9info:eu-repo/grantAgreement/ES/MICINN/RTI2018-096075-B-C21
000108397 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000108397 590__ $$a9.969$$b2021
000108397 592__ $$a2.878$$b2021
000108397 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b25 / 180 = 0.139$$c2021$$dQ1$$eT1
000108397 593__ $$aChemistry (miscellaneous)$$c2021$$dQ1
000108397 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000108397 700__ $$0(orcid)0000-0002-8424-9780$$aUrtizberea, A$$uUniversidad de Zaragoza
000108397 700__ $$0(orcid)0000-0003-2995-6615$$aRoman-Roche, J
000108397 700__ $$0(orcid)0000-0003-4478-1948$$aZueco, D
000108397 700__ $$0(orcid)0000-0001-7289-5649$$aCamon, A
000108397 700__ $$0(orcid)0000-0003-3449-4929$$aAlonso, PJ
000108397 700__ $$0(orcid)0000-0003-2095-5843$$aRoubeau, O
000108397 700__ $$0(orcid)0000-0001-6284-0521$$aLuis, F
000108397 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000108397 773__ $$g12, 15 (2021), 5621-5630$$pChem. sci.$$tCHEMICAL SCIENCE$$x2041-6520
000108397 8564_ $$s1755665$$uhttps://zaguan.unizar.es/record/108397/files/texto_completo.pdf$$yVersión publicada
000108397 8564_ $$s2863945$$uhttps://zaguan.unizar.es/record/108397/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000108397 909CO $$ooai:zaguan.unizar.es:108397$$particulos$$pdriver
000108397 951__ $$a2023-05-18-14:24:46
000108397 980__ $$aARTICLE