RQC Seminar

113rd RQC Seminar

• Speaker

  Mr. Jonah Peter
  ( Harvard University, US )

• Date

  16:00-17:00, April 22, 2024 (Monday)

• 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

  Examining the quantum signatures of optimal excitation energy transfer

• Inquiries

  rqc_info[at]ml.riken.jp

Abstract
The transport and trapping of optically-induced electronic excitations is of fundamental interest to the design of new energy efficient quantum technologies and to the study of potential quantum effects in biology. Using a paradigmatic quantum optical model, we examine the influence of coherence, entanglement, and cooperative dissipation on the transport and capture of excitation energy. We demonstrate that the rate of energy extraction is optimized under conditions that minimize the quantum coherence and entanglement of the system, which is a consequence of spontaneous parity time-reversal symmetry breaking. We then examine the effects of vibrational disorder and show that dephasing can be used to enhance the transport of delocalized excitations in settings relevant to biological photosynthesis. Our results highlight the rich, emergent behavior associated with the quantum-to-classical transition and may be relevant to the design of room-temperature quantum devices.