2003/12/31 by A. C. Johnson, C. M. Marcus, M. Hanson +2 · 4 citations
Computer Science · Physics and Astronomy · #Atomic physics #Capacitive sensing #Charge (physics) #Electrical engineering #Excited state #Materials science #Optoelectronics #Physics #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Quantum tunnelling #Semiconductor Quantum Structures and Devices #Spectroscopy #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.71.115333
published as Phys. Rev. B 71, 115333 (2005) · related papers available at http://marcuslab.harvard.edu
arxiv created 2004/01/05 · openalex publication_date 2005/03/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Pulsed electrostatic gating combined with capacitive charge sensing is used to perform excited-state spectroscopy of an electrically isolated double-quantum-dot system. The tunneling rate of a single charge moving between the two dots is affected by the alignment of quantized energy levels; measured tunneling probabilities thereby reveal spectral features. Two pulse sequences are investigated, one of which, termed latched detection, allows measurement of a single tunneling event without repetition. Both provide excited-state spectroscopy without electrical contact to the double-dot system.