Analyzing the Rydberg-based optical-metastable-ground architecture for Yb171 nuclear spins

Neville Chen, Lintao Li, William Huie, Mingkun Zhao, Ian Vetter, Chris H. Greene, and Jacob P. Covey
Phys. Rev. A 105, 052438 – Published 25 May 2022

Abstract

Neutral alkaline earth(like) atoms have recently been employed in atomic arrays with individual readout, control, and high-fidelity Rydberg-mediated entanglement. This emerging platform offers a wide range of new quantum science applications that leverage the unique properties of such atoms: ultranarrow optical “clock” transitions and isolated nuclear spins. Specifically, these properties offer an optical qubit (o) as well as ground (g) and metastable (m) nuclear spin qubits, all within a single atom. We consider experimentally realistic control of this omg architecture and its coupling to Rydberg states for entanglement generation, focusing specifically on ytterbium-171 (Yb171) with nuclear spin I=12. We analyze the S-series Rydberg states of Yb171, described by the three spin-12 constituents (two electrons and the nucleus). We confirm that the F=32 manifold, a unique spin configuration, is well suited for entangling nuclear spin qubits. Further, we analyze the F=12 series, described by two overlapping spin configurations, using a multichannel quantum defect theory. We study the multilevel dynamics of the nuclear spin states when driving the clock or Rydberg transition with Rabi frequency Ωc=2π×200kHz or ΩR=2π×6MHz, respectively, finding that a modest magnetic field (200G) and feasible laser polarization intensity purity (0.99) are sufficient for gate fidelities exceeding 0.99. We also study single-beam Raman rotations of the nuclear spin qubits and identify a “magic” linear polarization angle with respect to the magnetic field at which purely σx rotations are possible.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
5 More
  • Received 11 January 2022
  • Revised 17 April 2022
  • Accepted 12 May 2022

DOI:https://doi.org/10.1103/PhysRevA.105.052438

©2022 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalQuantum Information, Science & Technology

Authors & Affiliations

Neville Chen1,*, Lintao Li1,*, William Huie1,*, Mingkun Zhao1, Ian Vetter1, Chris H. Greene2,3, and Jacob P. Covey1,†

  • 1Department of Physics, The University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
  • 2Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA
  • 3Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, Indiana 47907, USA

  • *These authors contributed equally to this work.
  • jcovey@illinois.edu

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 105, Iss. 5 — May 2022

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×