RQC Seminar

101st RQC Seminar

• Speaker

  Mr. Dolev Bluvstein and Mr. Marcin Kalinowski
  ( Harvard University )

• Date

  10：00-11：00, December 15, 2023 (Friday)

• Venue

  Hybrid(ZOOM・ Wako Okochi Hall）

• Title

  Neutral atom quantum processors and the error correction frontier

• Inquiries

  rqc_info[at]ml.riken.jp

Abstract
We will present an approach to quantum information processing based on reconfigurable arrays of neutral atoms trapped and transported in optical tweezers. Long-lived atomic states are used for robust quantum information storage, and excitation into Rydberg states is used for entangling gates. This digital quantum processor features hundreds of individually addressable physical qubits, high two-qubit gate fidelities, arbitrary connectivity, and mid-circuit readout. Parallel control over atomic qubits enables efficient realization of digital simulation and advanced quantum processing experiments. In particular, we use this platform to realize quantum information processing and explore quantum algorithms with encoded logical qubits and quantum error correction techniques. Using this logical processor with various types of error-correcting codes, we demonstrate that we can improve logical two-qubit gates by increasing code size, outperform physical qubit fidelities, create logical GHZ states, and perform computationally complex scrambling circuits using 48 logical qubits and hundreds of logical gates. These results herald the advent of early error-corrected quantum computation, enabling new applications and inspiring a shift in addressing both the challenges and opportunities that lay ahead.