+++ONLINE COLLOQUIUM+++Quantum science with rare earth ions and Rydberg atom arrays (Prof. Jeff Thompson)

  • Datum: 27.04.2021
  • Uhrzeit: 14:30
  • Vortragende(r): Prof. Jeff Thompson
  • Electrical and Computer Engineering, Princeton University, USA
Atomic systems are at the frontier of many areas of quantum science and technology, including sensing and metrology, quantum simulation and quantum information processing. In this talk, I will present our work on developing novel atomic systems to advance these applications.

In the first part, I will discuss our work with rare earth atom defects in solid crystalline hosts, in particular erbium (Er3+). By incorporating these ions into nanophotonic cavities, we have demonstrated the first atomic source of single photons in the telecom band [1], and high-fidelity single-shot readout of the Er3+ electron spin using cavity-induced cycling transitions [2]. Furthermore, we have realized optical manipulation and single-shot readout of multiple atoms with spacings far below the diffraction limit of light, using a novel frequency-domain super-resolution technique [3]. I will conclude by discussing prospects for long-distance quantum repeater networks based on Er3+ ions, as well as fundamental studies of strongly interacting spin systems in the solid-state.
In the second part, I will discuss our ongoing efforts towards quantum computing with Rydberg atom arrays, including our Yb tweezer array [4] and a completely novel platform based on long-lived circular Rydberg states [5].

[1] A. M. Dibos, M. Raha, C. M. Phenicie, and J. D. Thompson, Atomic Source of Single Photons in the Telecom Band, Phys. Rev. Lett. 120, 243601 (2018).
[2] M. Raha, S. Chen, C. M. Phenicie, S. Ourari, A. M. Dibos, and J. D. Thompson, Optical Quantum Nondemolition Measurement of a Single Rare Earth Ion Qubit, Nat. Commun. 11, 1605 (2020).
[3] S. Chen, M. Raha, C. M. Phenicie, S. Ourari, and J. D. Thompson, Parallel Single-Shot Measurement and Coherent Control of Solid-State Spins below the Diffraction Limit, Science 370, 592 (2020).
[4] S. Saskin, J. T. Wilson, B. Grinkemeyer, and J. D. Thompson, Narrow-Line Cooling and Imaging of Ytterbium Atoms in an Optical Tweezer Array, Phys. Rev. Lett. 122, 143002 (2019).
[5] S. R. Cohen and J. D. Thompson, Quantum Computing with Circular Rydberg Atoms, ArXiv:2103.12744 (2021).

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