RQC Seminar

153rd RQC Seminar

• Speaker

  Ms. Riya Baruah
  ( Department of Applied Physics, Aalto University, Finland )

• Date

  16:00-17:00 (4:00-5:00 p.m.), September 5, 2024 (Thursday)

• Venue

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

• Title

  Thermal control of qubits using effective temperatures

• Inquiries

  rqc_info[at]ml.riken.jp

Abstract
Most quantum technologies rely on operating-temperatures in the sub-Kelvin regime, and therefore, control and precise manipulation of the temperature of nanoscale quantum systems are crucial for the advancement of thermal devices. Previously, it was shown that an effective time-dependent temperature can be generated by modulating the frequencies of several quantum harmonic oscillators that mediate the interactions between a thermal reservoir and a quantum system. Here, we adapt this approach to a setup with several qubits that act as the intermediaries between a thermal reservoir and another quantum system, whose temperature we wish to control. The effective time-dependent temperature of the qubits is created by modulating their energy splittings. By exposing the quantum system to the effective temperature of the qubits, the quantum system can be cooled below the temperature of the environment, or its temperature can be modulated periodically.