Extending the spin coherence lifetimes of ${}^{167}$Er$^{3+}$$:$Y$_2$SiO$_5$ at subkelvin temperatures

• URL: http://arxiv.org/abs/2107.04498v2
• Date: Sat, 25 Jun 2022 08:36:33 GMT
• Title: Extending the spin coherence lifetimes of ${}^{167}$Er$^{3+}$$:$Y$_2$SiO$_5$ at subkelvin temperatures
• Authors: Jian-Yin Huang, Pei-Yun Li, Zong-Quan Zhou, Chuan-Feng Li, and Guang-Can Guo
• Abstract summary: Er$3+$$:$Y$$SiO$_5$ is a material of particular interest due to its suitability for telecom-band quantum memories and quantum transducers interfacing optical communication with quantum computers working in the microwave regime. Here we perform a pulsed-electron-nuclear-double-resonance investigation for an Er$3+$-doped material at subkelvin temperatures. At the lowest working temperature, the electron spin coherence time reaches 290 $pm$ 17 $mu$s, which has been enhanced by 40 times compared with the previous results. In the subkelvin
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Er$^{3+}$$:$Y$_2$SiO$_5$ is a material of particular interest due to its suitability for telecom-band quantum memories and quantum transducers interfacing optical communication with quantum computers working in the microwave regime. Extending the coherence lifetimes of the electron spins and the nuclear spins is essential for implementing efficient quantum information processing based on such hybrid electron-nuclear spin systems. The electron spin coherence time of Er$^{3+}$$:$Y$_2$SiO$_5$ is so far limited to several microseconds, and there are significant challenges in optimizing coherence lifetimes simultaneously for both the electron and nuclear spins. Here we perform a pulsed-electron-nuclear-double-resonance investigation for an Er$^{3+}$-doped material at subkelvin temperatures. At the lowest working temperature, the electron spin coherence time reaches 290 $\pm$ 17 $\mu$s, which has been enhanced by 40 times compared with the previous results. In the subkelvin regime, a rapid increase in the nuclear spin coherence time is observed, and the longest coherence time of 738 $\pm$ 6 $\mu$s is obtained. These extended coherence lifetimes could be valuable resources for further applications of Er$^{3+}$$:$Y$_2$SiO$_5$ in fiber-based quantum networks.

Related papers

• Individual solid-state nuclear spin qubits with coherence exceeding seconds [32.074397322439324]
  We present a new platform for quantum information processing consisting of $183$W nuclear spin qubits adjacent to an Er$3+$ crystal. We demonstrate quantum non-demolition readout of each nuclear spin qubit using the Er$3+$ spin as an ancilla. We introduce a new scheme for all-microwave single- and two-qubit gates, based on stimulated Raman driving of the coupled electron-nuclear spin system.
  arXiv  Detail & Related papers  (2024-10-14T12:25:39Z)
• Coherent control of a nuclear spin via interactions with a rare-earth ion in the solid-state [0.0]
  Individually addressed Er$3+$ ions in solid-state hosts are promising resources for quantum repeaters. While the Er$3+$ electron spin provides a spin-photon interface, ancilla nuclear spins could enable multi-qubit registers with longer storage times. We demonstrate coherent coupling between the electron spin of a single Er$3+$ ion and a single $I=1/2$ nuclear spin in the solid-state host crystal.
  arXiv  Detail & Related papers  (2022-09-12T21:44:21Z)
• Robust millisecond coherence times of erbium electron spins [7.862622132486542]
  We report GHz-range electron spin transitions of $167mathrmEr3+$ in yttrium oxide. We find paramagnetic impurities are the dominant source of decoherence. These coherence lifetimes are among the longest found in crystalline hosts.
  arXiv  Detail & Related papers  (2022-07-06T14:29:11Z)
• Electron spin coherence on a solid neon surface [2.5496329090462626]
  A single electron floating on the surface of a condensed noble-gas liquid or solid can act as a spin qubit with ultralong coherence time. Previous studies suggest that the electron spin coherence time on a superfluid helium (He) surface can exceed 100 s. We present theoretical studies of the electron spin coherence on a solid neon (Ne) surface, motivated by our recent experimental realization of single-electron charge qubit on solid Ne.
  arXiv  Detail & Related papers  (2022-05-02T00:32:25Z)
• Computational Insights into Electronic Excitations, Spin-Orbit Coupling Effects, and Spin Decoherence in Cr(IV)-based Molecular Qubits [63.18666008322476]
  We provide insights into key properties of Cr(IV)-based molecules aimed at assisting chemical design of efficient molecular qubits. We find that the sign of the uniaxial zero-field splitting (ZFS) parameter is negative for all considered molecules. We quantify (super)hyperfine coupling to the $53$Cr nuclear spin and to the $13C and $1H nuclear spins.
  arXiv  Detail & Related papers  (2022-05-01T01:23:10Z)
• Rapid generation of all-optical $^{39}$K Bose-Einstein condensates using a low-field Feshbach resonance [58.720142291102135]
  We investigate the production of all-optical $39$K Bose-Einstein condensates with different scattering lengths using a Feshbach resonance near $33$ G. We are able to produce fully condensed ensembles with $5.8times104$ atoms within $850$ ms evaporation time at a scattering length of $232. Based on our findings we describe routes towards high-flux sources of ultra-cold potassium for inertial sensing.
  arXiv  Detail & Related papers  (2022-01-12T16:39:32Z)
• Twenty-three millisecond electron spin coherence of erbium ions in a natural-abundance crystal [0.8331845551768636]
  This is the longest electron spin coherence time measured in a material with a natural abundance of nuclear spins. Our results establish Er$3+$:CaWO$_4$ as a leading platform for quantum networks.
  arXiv  Detail & Related papers  (2021-06-28T20:45:11Z)
• Entanglement between a telecom photon and an on-demand multimode solid-state quantum memory [52.77024349608834]
  We show the first demonstration of entanglement between a telecom photon and a collective spin excitation in a multimode solid-state quantum memory. We extend the entanglement storage in the quantum memory for up to 47.7$mu$s, which could allow for the distribution of entanglement between quantum nodes separated by distances of up to 10 km.
  arXiv  Detail & Related papers  (2021-06-09T13:59:26Z)
• Electrically tuned hyperfine spectrum in neutral Tb(II)(Cp$^{\rm{iPr5}}$)$_2$ single-molecule magnet [64.10537606150362]
  Both molecular electronic and nuclear spin levels can be used as qubits. In solid state systems with dopants, an electric field was shown to effectively change the spacing between the nuclear spin qubit levels. This hyperfine Stark effect may be useful for applications of molecular nuclear spins for quantum computing.
  arXiv  Detail & Related papers  (2020-07-31T01:48:57Z)
• Hyperfine and quadrupole interactions for Dy isotopes in DyPc$_2$ molecules [77.57930329012771]
  Nuclear spin levels play an important role in understanding magnetization dynamics and implementation and control of quantum bits in lanthanide-based single-molecule magnets. We investigate the hyperfine and nuclear quadrupole interactions for $161$Dy and $163$Dy nucleus in anionic DyPc$.
  arXiv  Detail & Related papers  (2020-02-12T18:25:31Z)
• Optimal coupling of HoW$_{10}$ molecular magnets to superconducting circuits near spin clock transitions [85.83811987257297]
  We study the coupling of pure and magnetically diluted crystals of HoW$_10$ magnetic clusters to microwave superconducting coplanar waveguides. Results show that engineering spin-clock states of molecular systems offers a promising strategy to combine sizeable spin-photon interactions with a sufficient isolation from unwanted magnetic noise sources.
  arXiv  Detail & Related papers  (2019-11-18T11:03:06Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.