55 citations · 154 across the 8 of their papers we have counts for
9 papers
Statistical evaluation of 571 GaAs quantum point contact transistors showing the 0.7 anomaly in quantized conductance using millikelvin cryogenic on-chip multiplexing
Pengcheng Ma, Kaveh Delfanazari, Reuben K. Puddy +8
The mass production and the practical number of cryogenic quantum devices producible in a single chip are limited to the number of electrical contact pads and wiring of the cryosta…
Reconfigurable multiplex setup for high throughput electrical characterisation at cryogenic temperature
Xinya Bian, Hannah J Joyce, Charles G Smith +3
In this paper, we present a reconfigurable multiplex (MUX) setup that increases the throughput of electrical characterisation at cryogenic temperature. The setup separates the MUX…
Quantized conductance in split gate superconducting quantum point contacts with InGaAs semiconducting two-dimensional electron systems
Kaveh Delfanazari, Jiahui Li, Yusheng Xiong +11
Quantum point contact or QPC -- a constriction in a semiconducting two-dimensional (2D) electron system with a quantized conductance -- has been found as the building block of nove…
The effect of split gate size on the electrostatic potential and 0.7 anomaly within one-dimensional quantum wires on a modulation doped GaAs/AlGaAs heterostructure
L. W. Smith, H. Al-Taie, A. A. J. Lesage +9
We study 95 split gates of different size on a single chip using a multiplexing technique. Each split gate defines a one-dimensional channel on a modulation-doped GaAs/AlGaAs heter…
Dependence of the 0.7 anomaly on the curvature of the potential barrier in quantum wires
L. W. Smith, H. Al-Taie, A. A. J. Lesage +9
Ninety eight one-dimensional channels defined using split gates fabricated on a GaAs/AlGaAs heterostructure are measured during one cooldown at 1.4 K. The devices are arranged in a…
Multiplexed Charge-locking Device for Large Arrays of Quantum Devices
R. K. Puddy, L. W Smith, H. Al-Taie +7
We present a method of forming and controlling large arrays of gate-defined quantum devices. The method uses a novel, on-chip, multiplexed charge-locking system and helps to overco…
Statistical study of conductance properties in one-dimensional quantum wires focussing on the 0.7 anomaly
L. W. Smith, H. Al-Taie, F. Sfigakis +9
The properties of conductance in one-dimensional (1D) quantum wires are statistically investigated using an array of 256 lithographically-identical split gates, fabricated on a GaA…
A low-temperature device architecture for the statistical study of electrical characteristics of 256 quantum devices
H. Al-Taie, L. W. Smith, B. Xu +7
Research in the field of low-temperature electronics is limited by the small number of electrical contacts available on cryogenic set ups. This not only restricts the number of dev…
Cryogenic on-chip multiplexer for the study of quantum transport in 256 split-gate devices
H. Al-Taie, L. W. Smith, B. Xu +7
We present a multiplexing scheme for the measurement of large numbers of mesoscopic devices in cryogenic systems. The multiplexer is used to contact an array of 256 split gates on…