[Th-A2-D] Physics of spin dynamics and control

11:30 AM - 12:00 PM JST(2:30 AM - 3:00 AM UTC)

[Th-A2-D-03 (Invited)] Experimentally Probing Entropy Reduction via Quantum Information Transfer in an Electronic Spin Qubit

Toshihiro Yada¹, Pieter-Jan Stas², Aziza Suleymanzade³, Erik N. Knall², Nobuyuki Yoshioka⁴, 〇Takahiro Sagawa^4,5, Mikhail D. Lukin² (1. RIKEN (Japan), 2. Harvard Univ. (USA), 3. UC Berkeley (USA), 4. The Univ. of Tokyo (Japan), 5. InaRIS (Japan))

Building on our theoretical framework of quantum-classical (QC) transfer entropy, we experimentally probe entropy reduction via iterative quantum measurement and feedback on an electronic spin qubit associated with a silicon-vacancy center in diamond, verifying quantum generalizations of the second law and fluctuation theorem.