IC Colloquium: Photonic Links for Rydberg Atom Arrays


Event details

Date 22.02.2024
Hour 10:1511:15
Location Online
Category Conferences - Seminars
Event Language English
By: Ivana Dimitrova - Harvard University
IC/SB Faculty candidate

Scaling up the number of qubits available in experimental systems is one of the most significant challenges in quantum computation. A promising path forward is to modularize the quantum processors and then connect many processors using quantum channels, realized using photons and optical fibers. For Rydberg atom arrays, one of the leading platforms for quantum information processing, this could be done by developing an interface for photons, such as an optical cavity. In addition, an optical cavity can be used for fast mid-circuit readout for error detection. In this talk, I will discuss recent progress with two types of cavities and their feasibility as a photonic link. First, we show coherent control of Rydberg qubits and two-atom entanglement as close as 130um away from a nanophotonic cavity. Second, we show fast high-fidelity qubit state readout at a fiber Fabry Perot cavity. In addition, a fiber cavity also allows for cavity-mediated atom-atom gates, which could enable novel quantum networking capabilities.

Ivana Dimitrova is a postdoctoral researcher at Harvard University. She obtained her PhD from the Massachusetts Institute of Technology in 2020 and her BA from Princeton University. She uses ultracold atoms to engineer quantum systems for quantum information processing and quantum simulation. During her doctoral work, she built an experiment using ultracold atoms in an optical lattice to simulate the anisotropic spin-1/2 Hamiltonian, a paradigmatic model in Condensed Matter Physics. With this experiment, she investigated different dynamical regimes of spin systems, relevant for bridging the knowledge gap between material properties and microscopic interparticle interactions. During her postdoctoral work, she has been working on novel approaches to scaling up the number of qubits available for computation in Rydberg atom arrays. By interfacing the atom array with an optical cavity, the computational power of many atom arrays can be combined by establishing quantum channels between them.

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Practical information

  • General public
  • Free


  • TBD