302 citations · 865 across the 11 of their papers we have counts for
11 papers
Distinct Lifetimes for and Loop Measurements in a Majorana Tetron Device
Morteza Aghaee, Zulfi Alam, Rikke Andersen +164
We present a hardware realization and measurements of a tetron qubit device in a superconductor-semiconductor heterostructure. The device architecture contains two parallel superco…
Interferometric Single-Shot Parity Measurement in an InAs-Al Hybrid Device
Morteza Aghaee, Alejandro Alcaraz Ramirez, Zulfi Alam +159
The fusion of non-Abelian anyons or topological defects is a fundamental operation in measurement-only topological quantum computation. In topological superconductors, this operati…
Characterising Quantum Devices at Scale with Custom Cryo-CMOS
S. J. Pauka, K. Das, J. M. Hornibrook +4
We make use of a custom-designed cryo-CMOS multiplexer (MUX) to enable multiple quantum devices to be characterized in a single cool-down of a dilution refrigerator. Combined with…
Flexible superconducting Nb transmission lines on thin film polyimide for quantum computing applications
David B. Tuckerman, Michael C. Hamilton, David J. Reilly +5
We describe progress and initial results achieved towards the goal of developing integrated multi-conductor arrays of shielded controlled-impedance flexible superconducting transmi…
On-Chip Microwave Quantum Hall Circulator
A. C. Mahoney, J. I. Colless, S. J. Pauka +6
Circulators are non-reciprocal circuit elements integral to technologies including radar systems, microwave communication transceivers, and the readout of quantum information devic…
An FPGA-based Instrumentation Platform for use at Deep Cryogenic Temperatures
I. D. Conway Lamb, J. I. Colless, J. M. Hornibrook +4
We describe a cryogenic instrumentation platform incorporating commercially-available field-programmable gate arrays (FPGAs) configured to operate well beyond their specified tempe…
Cryogenic Control Architecture for Large-Scale Quantum Computing
J. M. Hornibrook, J. I. Colless, I. D. Conway Lamb +8
Solid-state qubits have recently advanced to the level that enables them, in-principle, to be scaled-up into fault-tolerant quantum computers. As these physical qubits continue to…
Frequency Multiplexing for Readout of Spin Qubits
J. M. Hornibrook, J. I. Colless, A. C. Mahoney +5
We demonstrate a low loss, chip-level frequency multiplexing scheme for readout of scaled-up spin qubit devices. By integrating separate bias tees and resonator circuits on-chip fo…
Dispersive Readout of a Few-Electron Double Quantum Dot with Fast rf Gate-Sensors
J. I. Colless, A. C. Mahoney, J. M. Hornibrook +4
We report the dispersive charge-state readout of a double quantum dot in the few-electron regime using the in situ gate electrodes as sensitive detectors. We benchmark this gate-se…
Superconducting Resonators with Parasitic Electromagnetic Environments
J. M. Hornibrook, E. E. Mitchell, D. J. Reilly
Parasitic electromagnetic fields are shown to strongly suppress the quality (Q)-factor of superconducting coplanar waveguide resonators via non-local dissipation in the macroscopic…
High Lewis number combustion wavefronts: a perturbative Melnikov analysis
S. Balasuriya, G. A. Gottwald, J. Hornibrook +1
The wavefronts associated with a one-dimensional combustion model with Arrhenius kinetics and no heat loss are analyzed within the high Lewis number perturbative limit. This situat…