Microwave band on-chip coil technique for single electron spin resonance in a quantum dot.
Microwave band on-chip microcoils are developed for the application to single electron spin resonance measurement with a single quantum dot. Basic properties such as characteristic impedance and electromagnetic field distribution are examined for various coil designs by means of experiment and simulation. The combined setup operates relevantly in the experiment at dilution temperature. The frequency responses of the return loss and Coulomb blockade current are examined. Capacitive coupling between a coil and a quantum dot causes photon assisted tunneling, whose signal can greatly overlap the electron spin resonance signal. To suppress the photon assisted tunneling effect, a technique for compensating for the microwave electric field is developed. Good performance of this technique is confirmed from measurement of Coulomb blockade oscillations.
Obata
Toshiaki
T
Quantum Spin Information Project, ICORP, JST, Atsugi-shi, Kanagawa 243-0198, Japan.
Pioro-Ladrière
Michel
M
Kubo
Toshihiro
T
Yoshida
Katsuharu
K
Tokura
Yasuhiro
Y
Tarucha
Seigo
S
D055590:Electromagnetic Phenomena / Q000295:instrumentation* / Q000379:methods; D004583:Electrons; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008872:Microwaves; D045663:Quantum Dots; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013113:Spin Labels; D014159:Transducers
D013113:Spin Labels