2010/04/08 by G. Giavaras, Joachim Wabnig, J. Wabnig +5 · 10 citations
Computer Science · Physics and Astronomy · #Condensed matter physics #Optoelectronics #Pauli exclusion principle #Physics #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum dot #Relaxation (psychology) #Semiconductor Quantum Structures and Devices #Sensitivity (control systems) #Spin (aerodynamics) #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.82.085410
published in Physical Review B 82(8) (American Physical Society) · 8 pages, 6 figures
arxiv created 2010/04/08 · openalex publication_date 2010/08/06 · arxiv updated 2015/05/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider a double quantum dot in the Pauli blockade regime interacting with a nearby single spin. We show that under microwave irradiation the average electron occupations of the dots exhibit resonances that are sensitive to the state of the nearby spin. The system thus acts as a spin meter for the nearby spin. We investigate the conditions for a nondemolition read-out of the spin and find that the meter works at temperatures comparable to the dot charging energy and sensitivity is mainly limited by the intradot spin relaxation.