Year: 2020
Type: article
Abstract: A quantum two-level system with periodically modulated energy splitting could provide a minimal universal quantum heat machine. We present the experimental realization and the theoretical description of such a two-level system as an impurity electron spin in a silicon tunnel field-effect transistor. In the incoherent regime, the system can behave analogously to either an Otto heat engine or a refrigerator. The coherent regime could be described as a superposition of those two regimes, producing specific interference fringes in the observed source-drain current.
Source: Physical Review Letters
Institutions: RIKEN, RIKEN Center for Emergent Matter Science, B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, V. N. Karazin Kharkiv National University, National Institute of Advanced Industrial Science and Technology, Tokyo Denki University, University of Michigan
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G1429566569, G1725592837, G2490340067, Quantum optics in quantum hybrid systems, G5014739385, シリコン技術に立脚した室温動作スピン量子ビット, Spin qubits compatible with silicon MOS technology and their large-scale integration, G6297370357, Creation of spin-coupling technology suitable for Si quantum bit integration, 超伝導人工原子を使った光子ベースの量子情報処理
OpenAlex ID: W3080103746