Single Spin Detection with a Carbon Nanotube Double Quantum Dot

摘要: Spin qubits defined in carbon nanotube quantum dots are of considerable interest for encoding and manipulating information because the long electron spin coherence times expected. However, before nanotubes can find applications processing schemes, we need to understand control coupling between individual spins interaction their environment. Here make use selection rules directly measure - demonstrate singlet-triplet exchange two dots. We furthermore elucidate effects spin-orbit on transitions investigate dot system with a single impurity ultimate limit sensitivity. A powerful method probe dynamics is by measuring transport double device blockade regime [1]. In this regime, tunneling an forbidden hence current suppressed. be lifted environment measurement (leakage) thus probes these interactions [2–4]. The main relaxation decoherence modes that have been considered so far hyperfine coupling. importance has recently demonstrated 13 C enriched [5, 6]. sig