Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Initializing 214Pure 14-Qubit Entangled Nuclear Spin States in a Hyperpolarized Molecular Solid. / Kothe, Gerd; Lukaschek, Michail; Yago, Tomoaki и др.
в: Journal of Physical Chemistry Letters, Том 12, № 14, 15.04.2021, стр. 3647-3654.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Initializing 214Pure 14-Qubit Entangled Nuclear Spin States in a Hyperpolarized Molecular Solid
AU - Kothe, Gerd
AU - Lukaschek, Michail
AU - Yago, Tomoaki
AU - Link, Gerhard
AU - Ivanov, Konstantin L.
AU - Lin, Tien Sung
N1 - Funding Information: We thank Drs. Jörg-Ulrich Weidner and David J. Sloop for theoretical support and helpful discussions and Thomas Berthold for excellent technical assistance. This work was supported by the Russian Foundation of Basic Research (project no. 17-03-00932) and by the Ministry of Science and Higher Education of the Russian Federation (to K.L.I.). Publisher Copyright: © 2021 American Chemical Society.
PY - 2021/4/15
Y1 - 2021/4/15
N2 - Quantum entanglement has been realized on a variety of physical platforms such as quantum dots, trapped atomic ions, and superconductors. Here we introduce specific molecular solids as promising alternative platforms. Our model system is triplet pentacene in a host single crystal at level anticrossing (LAC) conditions. First, a laser pulse generates the triplet state and initiates entanglement between an electron spin and 14 hyperfine coupled proton spins (quantum bits or qubits). This gives rise to large nuclear spin polarization. Subsequently, a resonant high-power microwave (mw) pulse disentangles the electron spin from the nuclear spins. Simultaneously, high-dimensional multiqubit entanglement is formed among the proton spins. We verified the initialization of 214 pure 14-qubit entangled nuclear spin states with an average degree of entanglement of Eav = 0.77 ± 0.03. These results pave the way for large-scale quantum information processing with more than 10 »000 multiqubit entangled states corresponding to computational (Hilbert) space dimensions of dim >1053.
AB - Quantum entanglement has been realized on a variety of physical platforms such as quantum dots, trapped atomic ions, and superconductors. Here we introduce specific molecular solids as promising alternative platforms. Our model system is triplet pentacene in a host single crystal at level anticrossing (LAC) conditions. First, a laser pulse generates the triplet state and initiates entanglement between an electron spin and 14 hyperfine coupled proton spins (quantum bits or qubits). This gives rise to large nuclear spin polarization. Subsequently, a resonant high-power microwave (mw) pulse disentangles the electron spin from the nuclear spins. Simultaneously, high-dimensional multiqubit entanglement is formed among the proton spins. We verified the initialization of 214 pure 14-qubit entangled nuclear spin states with an average degree of entanglement of Eav = 0.77 ± 0.03. These results pave the way for large-scale quantum information processing with more than 10 »000 multiqubit entangled states corresponding to computational (Hilbert) space dimensions of dim >1053.
UR - http://www.scopus.com/inward/record.url?scp=85104370232&partnerID=8YFLogxK
U2 - 10.1021/acs.jpclett.1c00726
DO - 10.1021/acs.jpclett.1c00726
M3 - Article
C2 - 33826347
AN - SCOPUS:85104370232
VL - 12
SP - 3647
EP - 3654
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
SN - 1948-7185
IS - 14
ER -
ID: 34174181