2003/12/19 by Alexandre Guillaume, A. Guillaume, J. F. Schneiderman +5
Computer Science · Engineering · Physics and Astronomy · #Capacitor #Charge (physics) #Computer science #Condensed matter physics #Cooper pair #Coulomb blockade #Dephasing #Electrical engineering #Engineering #Optoelectronics #Physics #Quantization (signal processing) #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum mechanics #Radio frequency #Relaxation (psychology) #Spectroscopy and Quantum Chemical Studies #Superconductivity #Transistor #Voltage #cond-mat
paper · pdf · doi:10.1103/physrevb.69.132504
arxiv created 2003/12/19 · openalex publication_date 2004/04/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have fabricated a single Cooper-pair box (SCB) in close proximity to a single electron transistor (SET) operated in the radio-frequency mode (RF-SET) with an inductor and capacitor lithographed directly on chip. The RF-SET was used to measure the charge state of the SCB revealing a 2e periodic charge quantization. We performed spectroscopy measurements to extract the charging energy (EC) and the Josephson coupling energy (EJ). Control of the temporal evolution of the quantum charge state was achieved by applying fast dc pulses to the SCB gate. The dephasing and relaxation times were extracted from these measurements.