RQC Seminar

143rd RQC Seminar

• Speaker

  Prof. Adam Miranowicz
  ( Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University, Poland )

• Date

  16:00-17:00 (4:00-5:00 p.m.), August 16, 2024 (Friday)

• Venue

  Hybrid(ZOOM・ Wako Main Research 3F 345-347 Seminar Room/ 研究本館3階 セミナー室(345-347) C01）

• Title

  Innovative applications of light squeezing and Schrödinger cat-like states in quantum technologies.

• Inquiries

  rqc_info[at]ml.riken.jp

Abstract
Squeezed states of light are a powerful resource in quantum technologies, with notable applications such as improved gravitational wave detection, as demonstrated in the advanced LIGO and Virgo experiments, and demonstrations of quantum computational advantage through boson sampling with squeezed light in the experiments conducted by the Hefei and Xanadu-NIST groups.Additionally, quantum technologies based on Schrödinger cat states have garnered significant theoretical and experimental interest,particularly in the context of quantum computing.

I would like to discuss novel applications of cavity squeezing for exponentially enhancing light-matter interactions, pushing the boundaries from the strong to ultra-strong and deep-strong coupling regimes, as well as for exponentially improving qubit readout. These novel applications have primarily been developed theoretically at RIKEN. Our concept of enhancing light-matter interactions through squeezing has already been experimentally confirmed by the NIST group (Burd et al., Nature Phys., 2021) and the Sorbonne group (Villiers et al., PRX Quantum, 2024). Furthermore, I will discuss explorations of Kerr-nonlinearity-based methods for generating multi-component Schrödinger cat-like states and novel protocols for geometric quantum gates based on cat qubits.