RQC Seminar

41st RQC Seminar

• Speaker

  Dr. Carlos Sánchez Muñoz　
  (Department of Theoretical Condensed Matter Physics,Autonomous University of Madrid, Spain)

• Date

  16:00-17:00 (JST), April 17, 2023 (Monday)

• Venue

  Hybrid (Zoom / Wako 2F Large Conference Room, Admin. Headquarters Bldg.)

• Title

  Dressing qubits with classical fields for quantum applications

• Inquiries

  rqc_info[at]ml.riken.jp

Abstract
The hybridization of energy levels with a coherent driving field, the AC Stark effect, is one of the staple phenomena in quantum optics, linked to well known effects such as electromagnetically induced transparency. However, the possibilities of the nonlinear phenomena that emerge from this hybridization in the context of cavity QED are far from being completely explored. Here, I discuss a series of works in which we exploit the interaction between cavities and qubits dressed by coherent fields for applications in quantum technologies, such as the generation of non-classical states of light and matter [1-3], the emission of quantum radiation in the THz, or the dissipative stabilization of entanglement between non-identical quantum emitters [4].

[1] Sánchez Muñoz, C. et al. Emitters of N-photon bundles. Nature Photonics 8, 550–555 (2014).
[2] Sánchez Muñoz, C., Laussy, F. P., Valle, E. del, Tejedor, C. and González-Tudela, A. Filtering multiphoton emission from state-of-the-art cavity quantum electrodynamics. Optica, OPTICA 5, 14–26 (2018).
[3] Sánchez Muñoz, C., Frisk Kockum, A., Miranowicz, A. and Nori, F. Simulating ultrastrong-coupling processes breaking parity conservation in Jaynes-Cummings systems. Phys. Rev. A 102, 033716 (2020).
[4] Vivas-Viaña, A. and Sánchez Muñoz, C. Two-photon resonance fluorescence of two interacting nonidentical quantum emitters. Phys. Rev. Research 3, 033136 (2021).