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Sökning: WFRF:(Longdell Jevon J.)

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1.
  • Chen, Yu Hui, et al. (författare)
  • Optically Unstable Phase from Ion-Ion Interactions in an Erbium-Doped Crystal
  • 2021
  • Ingår i: Physical Review Letters. - 0031-9007. ; 126:11
  • Tidskriftsartikel (refereegranskat)abstract
    • Optical many-body systems naturally possess strong light-matter interactions and are thus of central importance for photonic applications. However, these applications are so far limited within the regime of intrinsic dynamically stable phases, and the possibility of unstable phases remains unidentified. Here we experimentally revealed a new dynamical phase of intrinsic optical instability by using a continuous-wave laser to drive an erbium-doped crystal. The transmission through the sample became unstable for intense laser inputs, and transient net gain was observed if the light passed the sample twice. The phase transition, between states in and out of a dynamical equilibrium, was induced by the dipole-dipole interactions between nearby erbium ions.
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2.
  • Rakonjac, Jelena V., et al. (författare)
  • Long spin coherence times in the ground state and in an optically excited state of Er 3+ 167 : Y2SiO5 at zero magnetic field
  • 2020
  • Ingår i: Physical Review B. - 2469-9950. ; 101:18
  • Tidskriftsartikel (refereegranskat)abstract
    • Spins in solids are an ideal candidate to act as a memory and interface with superconducting qubits due to their long coherence times. We spectroscopically investigate erbium-167-doped yttrium orthosilicate as a possible microwave-addressed memory employing its microwave frequency transitions that occur without applying an external magnetic field. We obtain coherence times of 380 ?s in a ground state spin transition and 1.48 ms in an excited state spin transition. This is 28 times longer compared to previous zero field measurements, as well as 200 times longer than a previous microwave memory demonstration in the same material. These long coherence times show that erbium-167-doped yttrium orthosilicate has potential as a microwave-addressed quantum memory.
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  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
Typ av innehåll
refereegranskat (2)
Författare/redaktör
Horvath, Sebastian P ... (2)
Chen, Yu-Hui (2)
Longdell, Jevon J. (2)
Zhang, Xiangdong (1)
Rakonjac, Jelena V. (1)
Lärosäte
Lunds universitet (2)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (2)

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