Long spin coherence times in the ground state and in an optically excited state of 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Er</mml:mi><mml:none /><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow><mml:mprescripts /><mml:none /><mml:mn>167</mml:mn></mml:mmultiscripts><mml:mo>:</mml:mo><mml:msub><mml:mi mathvariant="normal">Y</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>SiO</mml:mi><mml:mn>5</mml:mn></mml:msub></mml:mrow></mml:math>
 at

Rakonjac, Jelena V.; Chen, Yu Hui; Horvath, Sebastian P.; Longdell, Jevon J.

doi:10.1103/physrevb.101.184430

Cited by 39 publications

(26 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Improvements to the intrinsic quality factor of the resonator are required to reach the impedance matching condition. Creative solutions such as using clock transitions in 167 Er 3+ :Y 2 SiO 5 [37,43,44], which are less sensitive to superhyperfine coupling, or finding new crystal hosts for erbium ions [45] can be used to overcome the superhyperfine limit.…”

Section: Dynamic Frequency Controlmentioning

confidence: 99%

Multifunctional on-chip storage at telecommunication wavelength for quantum networks

Craiciu¹,

Lei²,

Rochman³

et al. 2021

Optica

View full text Add to dashboard Cite

Quantum networks will enable a variety of applications, from secure communication and precision measurements to distributed quantum computing. Storing photonic qubits and controlling their frequency, bandwidth, and retrieval time are important functionalities in future optical quantum networks. Here we demonstrate these functions using an ensemble of erbium ions in yttrium orthosilicate coupled to a silicon photonic resonator and controlled via on-chip electrodes. Light in the telecommunication C-band is stored, manipulated, and retrieved using a dynamic atomic frequency comb protocol controlled by linear DC Stark shifts of the ion ensemble’s transition frequencies. We demonstrate memory time control in a digital fashion in increments of 50 ns, frequency shifting by more than a pulse width ( ± 39 M H z ), and a bandwidth increase by a factor of 3, from 6 to 18 MHz. Using on-chip electrodes, electric fields as high as 3 kV/cm were achieved with a low applied bias of 5 V, making this an appealing platform for rare-earth ions, which experience Stark shifts of the order of 10 kHz/(V/cm).

show abstract

Section: Dynamic Frequency Controlmentioning

confidence: 99%

Multifunctional on-chip storage at telecommunication wavelength for quantum networks

Craiciu¹,

Lei²,

Rochman³

et al. 2021

Optica

View full text Add to dashboard Cite

show abstract

“…Paramagnetic RE with nonzero nuclear spins (I ≠ 0) that exhibit ground-state splittings of a few GHz at zero magnetic field such as 167 Er 3þ , 145 Nd 3þ or 173 Yb 3þ could also achieve DEOP under similar conditions, assuming that spin relaxations are dominated by the electron part of the hyperfine wave functions. These isotopes have particular interest over the I ¼ 0 isotopes since they can achieve long coherence lifetimes as they can show optical and spin zero first-order Zeeman transitions at zero magnetic field, in the same way as 171 Yb 3þ ∶Y 2 SiO 5 [18,55].…”

Section: Discussionmentioning

confidence: 99%

Coherence Time Extension by Large-Scale Optical Spin Polarization in a Rare-Earth Doped Crystal

et al. 2020

View full text Add to dashboard Cite

Optically addressable spins are actively investigated in quantum communication, processing, and sensing. Optical and spin coherence lifetimes, which determine quantum operation fidelity and storage time, are often limited by spin-spin interactions, which can be decreased by polarizing spins. Spin polarization can be achieved using optical pumping, large magnetic fields, or mK-range temperatures. Here, we show that optical pumping of a small fraction of ions with a fixed-frequency laser, coupled with spin-spin interactions and spin diffusion, leads to substantial spin polarization in a paramagnetic rare-earth doped crystal, 171 Yb 3þ ∶Y 2 SiO 5. Indeed, more than 90% spin polarization has been achieved at 2 K and zero magnetic field. Using this spin polarization mechanism, we further demonstrate an increase in optical coherence lifetime from 0.3 ms to 0.8 ms, due to a strong decrease in spin-spin interactions. This effect opens the way to new schemes for obtaining long optical and spin coherence lifetimes in various solid-state systems such as ensembles of rare-earth ions or color centers in diamond, which are of interest for a broad range of quantum technologies.

show abstract

“…Additionally, REIs doped in crystals possess long coherence lifetimes in both the optical and spin domain [24,25], which gives the possibility of a built-in memory incorporated with the transducer. Lastly, isotopes of REIs with nonzero nuclear spin have zero-field hyperfine structure [20,26], which enables transduction without an external magnetic field. One promising transduction protocol involves using a cavity-enhanced Raman scattering process with a 3-level system [18].…”

Section: I: Introductionmentioning

confidence: 99%

Characterization of Er3+:YVO4 for microwave to optical transduction

et al. 2021

View full text Add to dashboard Cite

Quantum transduction between microwave and optical frequencies is important for connecting superconducting quantum platforms in a quantum network. Ensembles of rare-earth ions are promising candidates to achieve this conversion due to their collective coherent properties at microwave and optical frequencies. Erbium ions are of particular interest because of their telecom wavelength optical transitions that are compatible with fiber communication networks. Here, we report the optical and electron spin properties of erbium doped yttrium orthovanadate (Er 3+ :YVO4), including high-resolution optical spectroscopy, electron paramagnetic resonance studies and an initial demonstration of microwave to optical conversion of classical fields. The highly absorptive optical transitions and narrow ensemble linewidths make Er 3+ :YVO4 promising for magneto-optic quantum transduction.

show abstract

Long spin coherence times in the ground state and in an optically excited state of Er3+167:Y2SiO5 at

Cited by 39 publications

References 51 publications

Multifunctional on-chip storage at telecommunication wavelength for quantum networks

Multifunctional on-chip storage at telecommunication wavelength for quantum networks

Coherence Time Extension by Large-Scale Optical Spin Polarization in a Rare-Earth Doped Crystal

Characterization of Er3+:YVO4 for microwave to optical transduction

Contact Info

Product

Resources

About