The overall focus of the Rimbach-Russ group is to bridge the gap between experiments and quantum information theory. The group has close collaborations with several experimental and theoretical teams both locally and internationally, within Europe but also in the US. One particular focus of the group is driving the transition from prototype to practical quantum computers through theoretical efforts tailored to the needs. This involves understanding limitations the actual devices arising from the host environment and investigating solutions. Such solutions can range from improved designs for the host structure, over optimal regimes of operations, and optimal control techniques to countering undesired effects on qubits, until understanding the impact of realistic noise on quantum algorithms.

Rimbach-Russ obtained his PhD summa cum laude (‘with distinction’) in theoretical quantum physics from the University of Konstanz in 2019 under the supervision of Prof Guido Burkard and c-advisor Prof Jason Petta. Following that, he completed a postdoctoral position in the research groups led by Prof Lieven Vandersypen and Prof Menno Veldhorst, here at QuTech.

In 2021, Maximilian was honoured with a Veni Talent Fellowship from NWO. Earlier this year, he progressed to the role of group leader at QuTech, where he currently leads research on semiconductor qubit modelling.

Haider’s scientific pursuits and research are centred on the design of superconducting qubits, cryogenic microwave circuit design, and simulation techniques for quantum processors and sensors. A key objective for Haider’s group is to conduct reliable numerical electromagnetic analyses of quantum processing units (QPUs), aiming to streamline the design process for our large-scale QPU. Additionally, Haider’s team will direct efforts towards pioneering the development of next-generation superconducting sensors tailored for detecting ultralow electromagnetic signals.

Haider received her MSc (cum laude) and PhD degrees in electrical engineering from the TU Delft in 2010 and 2015, respectively. After working as the lead applied electromagnetic scientist at TNO and QuTech, Haider took on the role of Assistant Professor at the Microelectronics Department of TU Delft in August 2023. She is also seconded to QuTech, where she continues her research in the field of quantum applications.

Starting in February 2024, Chatterjee will work on semiconductor-superconductor circuits for quantum technologies, as well as focus on the scaling of quantum control, calibration and readout in arrays of semiconductor qubits. She also has a particular interest in applying techniques such as fast readout and gate control to devices encoding condensed matter phenomena.

Her research hopes to address “growing pains” in the operation of quantum devices: challenges in calibration and control that occur when a successful qubit archetype is extended into a qubit array. For example, keeping track of a myriad of control parameters and optimizing them against evolving noise is essential for working larger-scale quantum processors. Additionally, she will focus on combining the strengths of evolving qubit types that use both superconducting and semiconducting materials, including those successfully developed at QuTech, and understanding the fascinating underlying hybrid physics. She has several PhD and postdoc positions available.

Before QuTech, Chatterjee worked at the Niels Bohr Institute, University of Copenhagen, as an Associate Professor at the Center for Quantum Devices. There, her experimental group and she researched better ways to build, operate, and scale solid-state quantum hardware, drawing on algorithmic techniques, hybrid materials, as well as highly fast and sensitive readout.

Chatterjee received her PhD from University College London, where she studied hybrid quantum-dot dopant devices and spin qubits fabricated on an industrial platform in the group of John Morton, and spent some time as a visiting researcher at the University of Cambridge. She has also worked on superconducting-semiconducting nanowire devices in the group of Jason Petta at Princeton University where she received her AB degree. After her PhD, Chatterjee spent time as an EPSRC Doctoral Prize Postdoctoral Fellow jointly affiliated to the University of Copenhagen and the London Center for Nanotechnology, working on extending spin qubits into two-dimensional arrays.