Initializing 214Pure 14-Qubit Entangled Nuclear Spin States in a Hyperpolarized Molecular Solid

Gerd Kothe, Michail Lukaschek, Tomoaki Yago, Gerhard Link, Konstantin L. Ivanov, Tien Sung Lin

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

1 Цитирования (Scopus)

Аннотация

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.

Язык оригиналаанглийский
Страницы (с-по)3647-3654
Число страниц8
ЖурналJournal of Physical Chemistry Letters
Том12
Номер выпуска14
DOI
СостояниеОпубликовано - 15 апр 2021

Предметные области OECD FOS+WOS

  • 2.05 ТЕХНОЛОГИЯ МАТЕРИАЛОВ
  • 1.04 ХИМИЧЕСКИЕ НАУКИ
  • 1.04.EI ХИМИЯ, ФИЗИЧЕСКАЯ

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