Charge sensing of excited states in an isolated double quantum dot

TY - JOUR

T1 - Charge sensing of excited states in an isolated double quantum dot

AU - C. Johnson, A.

AU - M. Marcus, C.

AU - P. Hanson, M.

AU - C. Gossard, A.

PY - 2005/12/31

Y1 - 2005/12/31

N2 - 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.

AB - 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.

KW - cond-mat.mes-hall

U2 - 10.1103/PhysRevB.71.115333

DO - 10.1103/PhysRevB.71.115333

M3 - Journal article

SN - 2469-9950

VL - 71

SP - 115333

JO - Physical Review B

JF - Physical Review B

IS - 11

ER -