CMOS circuits and systems for cryogenic control of silicon quantum processors

Quantum computers can provide exponential speedup in solving certain computational problems pertaining to drug discovery, cybersecurity, weather forecasting, etc. Although a quantum computer with just 50-qubits has been shown to surpass the computing power of the best supercomputers in specific applications, millions of qubits would be required...

A Scalable Cryo-CMOS Controller for the Wideband Frequency-Multiplexed Control of Spin Qubits and Transmons

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 proximity to the cryogenic solid-state qubits, a compact quantum-computing system can be achieved, thus promising...

Designing a DDS-Based SoC for High-Fidelity Multi-Qubit Control

The design of a large-scale quantum computer requires co-optimization of both the quantum bits (qubits) and their control electronics. This work presents the first systematic design of such a controller to simultaneously and accurately manipulate the states of multiple spin qubits or transmons. By employing both analytical and simulation...

Assessing gaming simulation validity for training traffic controllers.

Background. The Dutch railway company ProRail is performing large-scale capacity upgrades to their infrastructure network. As part of these upgrades, ProRail uses gaming simulations to help prepare train traffic controllers for new infrastructure situations. Researching the validity of these gaming simulations is essential, since the conclusions...

The Power of Sponges: High-tech versus Low-tech Gaming Simulation for the Dutch railways

To facilitate innovation in transport systems there is a need for simulated environments to experiment with new configurations, ideas and solutions. Gaming simulation is such an environment, and this paper presents the approach applied in capacity allocation and traffic control innovation for the Dutch railways. Both hightech and low-tech games...

Simulation Fidelity Theory and Practice

Simulation fidelity is an intrinsic element of any simulation system, one that all its developers and users have to deal with one way or the other. It is commonly recognized by the modeling and simulation community that simulation fidelity is an essential vehicle in properly assessing the validity and credibility of simulation results....