+++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
Ort: +++ONLINE KOLLOQUIUM+++

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).