Andrea Corna
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View article: QCoDeS/Qcodes: v0.25.0.dev0
QCoDeS/Qcodes: v0.25.0.dev0 Open
Modular data acquisition framework
View article: QCoDeS/Qcodes: QCoDeS 0.23.0 - February 2021 update
QCoDeS/Qcodes: QCoDeS 0.23.0 - February 2021 update Open
Changelog for QCoDeS 0.23.0 The February 2021 release of QCoDeS. Improved: Commit data directy to dataset cache (#2667) (#2761) Removed duplicate get call in _ParamCaller used to acquire parameters out of the main thread. This fix resultin…
View article: On-chip integration of Si/SiGe-based quantum dots and switched-capacitor circuits
On-chip integration of Si/SiGe-based quantum dots and switched-capacitor circuits Open
Solid-state qubits integrated on semiconductor substrates currently require at least one wire from every qubit to the control electronics, leading to a so-called wiring bottleneck for scaling. Demultiplexing via on-chip circuitry offers an…
View article: A Scalable Cryo-CMOS Controller for the Wideband Frequency-Multiplexed Control of Spin Qubits and Transmons
A Scalable Cryo-CMOS Controller for the Wideband Frequency-Multiplexed Control of Spin Qubits and Transmons Open
Building a large-scale quantum computer requires the co-optimization of both the quantum bits (qubits) and their control electronics. By operating the CMOS control circuits at cryogenic temperatures (cryo-CMOS), and hence in close proximit…
View article: QCoDeS/Qcodes: QCoDeS 0.18.0 - September 2020
QCoDeS/Qcodes: QCoDeS 0.18.0 - September 2020 Open
Changelog for QCoDeS 0.18.0 The September 2020 release of QCoDeS. Breaking Changes: There are no breaking changes in this release of QCoDeS. New: Support nested Measurement context managers; in particular, only create one background writer…
View article: QCoDeS/Qcodes: QCoDeS 0.17.0 - August 2020
QCoDeS/Qcodes: QCoDeS 0.17.0 - August 2020 Open
Changelog for QCoDeS 0.17.0 The August 2020 release of QCoDeS. Note: QCoDeS no longer officially supports Python 3.6. Breaking Changes: There are no breaking changes in this release of QCoDeS. New: Add in-memory cache representation for da…
View article: 19.1 A Scalable Cryo-CMOS 2-to-20GHz Digitally Intensive Controller for 4×32 Frequency Multiplexed Spin Qubits/Transmons in 22nm FinFET Technology for Quantum Computers
19.1 A Scalable Cryo-CMOS 2-to-20GHz Digitally Intensive Controller for 4×32 Frequency Multiplexed Spin Qubits/Transmons in 22nm FinFET Technology for Quantum Computers Open
Quantum computers (QC), comprising qubits and a classical controller, can provide exponential speed-up in solving certain problems. Among solid-state qubits, transmons and spin-qubits are the most promising, operating « 1K. A qubit can be …
View article: QCoDeS/Qcodes: QCoDeS 0.2.1
QCoDeS/Qcodes: QCoDeS 0.2.1 Open
Changelog for QCoDeS 0.2.1 This release fixes two small issues with execution of tests in 0.2.0 (#1540)
View article: All-Electrical Control of a Hybrid Electron Spin/Valley Quantum Bit in SOI CMOS Technology
All-Electrical Control of a Hybrid Electron Spin/Valley Quantum Bit in SOI CMOS Technology Open
We fabricated Quantum Dot (QD) devices using a standard SOI CMOS process\nflow, and demonstrated that the spin of confined electrons could be controlled\nvia a local electrical-field excitation, owing to inter-valley spin-orbit\ncoupling. …
View article: All-Electrical Control of a Hybrid Electron Spin/Valley Quantum Bit in SOI CMOS Technology
All-Electrical Control of a Hybrid Electron Spin/Valley Quantum Bit in SOI CMOS Technology Open
We successfully demonstrated experimentally the electrical-field-mediated\ncontrol of the spin of electrons confined in an SOI Quantum Dot (QD) device\nfabricated with a standard CMOS process flow. Furthermore, we show that the\nBack-Gate …
View article: QCoDeS/Qcodes: Fix of corrupt file in v0.1.10
QCoDeS/Qcodes: Fix of corrupt file in v0.1.10 Open
Changelog for QCoDeS 0.1.11 This release fixes a corrupt file in release 0.1.10
View article: QCoDeS/Qcodes: Dataset beta release
QCoDeS/Qcodes: Dataset beta release Open
Changelog for QCoDeS 0.1.10 This release drops support for python 3.5- and introduces the new dataset in a beta version. New & Improved New and Improved drivers: New Tektronix AWG5208 driver (#977) New Alazar ATS9360 driver (#860) Triton d…
View article: Power Consumption Models for Multi-Tenant Server Infrastructures
Power Consumption Models for Multi-Tenant Server Infrastructures Open
Multi-tenant virtualized infrastructures allow cloud providers to minimize costs through workload consolidation. One of the largest costs is power consumption, which is challenging to understand in heterogeneous environments. We propose a …
View article: A geographically distributed bio-hybrid neural network with memristive plasticity
A geographically distributed bio-hybrid neural network with memristive plasticity Open
Throughout evolution the brain has mastered the art of processing real-world inputs through networks of interlinked spiking neurons. Synapses have emerged as key elements that, owing to their plasticity, are merging neuron-to-neuron signal…
View article: QCoDeS/Qcodes: Small changes
QCoDeS/Qcodes: Small changes Open
Changelog for QCoDeS 0.1.6 New & Improved Improved drivers: M4i improvements (#672, #692) Improved R&S ZNB8/20 driver with channels and support for many more parameters (#643, #682, #710) Speedup qdac snapshot (#686, #690) Keysight 34465A …
View article: Level Spectrum and Charge Relaxation in a Silicon Double Quantum Dot Probed by Dual-Gate Reflectometry
Level Spectrum and Charge Relaxation in a Silicon Double Quantum Dot Probed by Dual-Gate Reflectometry Open
We report on dual-gate reflectometry in a metal-oxide-semiconductor double-gate silicon transistor operating at low temperature as a double quantum dot device. The reflectometry setup consists of two radio frequency resonators respectively…
View article: Level spectrum and charge relaxation in a silicon double quantum dot probed by dual-gate reflectometry
Level spectrum and charge relaxation in a silicon double quantum dot probed by dual-gate reflectometry Open
We report on dual-gate reflectometry in a metal-oxide-semiconductor double-gate silicon transistor operating at low temperature as a double quantum dot device. The reflectometry setup consists of two radio-frequency resonators respectively…
View article: Si CMOS platform for quantum information processing
Si CMOS platform for quantum information processing Open
We report the first quantum bit device implemented on a foundry-compatible Si\nCMOS platform. The device, fabricated using SOI NanoWire MOSFET technology, is\nin essence a compact two-gate pFET. The qubit is encoded in the spin degree of\n…
View article: Development of a CMOS Route for Electron Pumps to Be Used in Quantum Metrology
Development of a CMOS Route for Electron Pumps to Be Used in Quantum Metrology Open
The definition of the ampere will change in the next few years. This electrical base unit of the S.I. will be redefined by fixing the value of the charge quantum, i.e., the electron charge e. As a result electron pumps will become the natu…
View article: Design and cryogenic operation of a hybrid quantum-CMOS circuit
Design and cryogenic operation of a hybrid quantum-CMOS circuit Open
Silicon-On-Insulator nanowire transistors of very small dimensions exhibit quantum effects like Coulomb blockade or single-dopant transport at low temperature. The same process also yields excellent field-effect transistors (FETs) for larg…