19 citations · 124 across the 14 of their papers we have counts for
14 papers
Phononic Bragg Reflectors for Thermal Insulation of Scalable Cryogenic Control Electronics from Qubits
Isabelle V. Sprave, Denny Dütz, Sebastian Kock +5
Scaling solid-state architectures to the millions of qubits required for utility-scale quantum computing could benefit from the integration of control electronics in the immediate…
Data-Driven Qubit Characterization and Optimal Control using Deep Learning
Paul Surrey, Julian D. Teske, Tobias Hangleiter +2
Quantum computing requires the optimization of control pulses to achieve high-fidelity quantum gates. We propose a machine learning-based protocol to address the challenges of eval…
On Noise-Sensitive Automatic Tuning of Gate-Defined Sensor Dots
Fabian Hader, Jan Vogelbruch, Simon Humpohl +5
In gate-defined quantum dot systems, the conductance change of electrostatically coupled sensor dots allows the observation of the quantum dots' charge and spin states. Therefore,…
Silicon Nitride C-Band Grating Coupler with Reduced Waveguide Back-Reflection Using Adaptively Corrected Elliptical Grates
Ibrahim Ghannam, Florian Merget, Jeremy Witzens
We present experimental results for a fully etched C-band grating coupler with reduced back reflection fabricated in an 800 nm silicon nitride platform. Back-reflections are reduce…
Focusing Optical Phased Array for Optically Enabled Probing of the Retina with Subcellular Resolution
Pedram Hosseini, Prachi Agrawal, Alireza Tabatabaei Mashayekh +3
We present a silicon-nitride-based optical phased array with built-in focusing and steering capability, that operates at 522 nm and is aimed at complementing a micro-electrode arra…
External Cavity 637-nm Laser with Increased RSOA-to-PIC Alignment Tolerance and a Filtered Sagnac-Loop Reflector with Single Output Waveguide
Georgios Sinatkas, Arijit Misra, Florian Merget +1
The design of a 637-nm wavelength, photonic-integrated-circuit-based external cavity laser (PIC-based ECL) aimed at quantum technology applications is presented together with first…
An efficient singlet-triplet spin qubit to fiber interface assisted by a photonic crystal cavity
Kui Wu, Sebastian Kindel, Thomas Descamps +6
We introduce a novel optical interface between a singlet-triplet spin qubit and a photonic qubit which would offer new prospects for future quantum communication applications. The…
Millikelvin confocal microscope with free-space access and high-frequency electrical control
Thomas Descamps, Feng Liu, Tobias Hangleiter +3
Cryogenic confocal microscopy is a powerful method for studying solid state quantum devices such as single photon sources and optically controlled qubits. While the vast majority o…
Modeling of an efficient singlet-triplet spin qubit to photon interface assisted by a photonic crystal cavity
Kui Wu, Sebastian Kindel, Thomas Descamps +6
Efficient interconnection between distant semiconductor spin qubits with the help of photonic qubits would offer exciting new prospects for future quantum communication application…
Semiconductor membranes for electrostatic exciton trapping in optically addressable quantum transport devices
Thomas Descamps, Feng Liu, Sebastian Kindel +9
Combining the capabilities of gate defined quantum transport devices in GaAs-based heterostructures and of optically addressed self-assembled quantum dots could open broad perspect…
Minimising statistical errors in calibration of quantum-gate sets
Yaiza Aragonés-Soria, René Otten, Tobias Hangleiter +2
Calibration of quantum gates is a necessary hurdle to overcome on the way to a reliable quantum computer. In a recent paper, a protocol called Gate Set Calibration protocol (GSC) h…
Analytic Filter Function Derivatives for Quantum Optimal Control
Isabel Nha Minh Le, Julian D. Teske, Tobias Hangleiter +2
Auto-correlated noise appears in many solid state qubit systems and hence needs to be taken into account when developing gate operations for quantum information processing. However…
Filter Function Formalism and Software Package to Compute Quantum Processes of Gate Sequences for Classical Non-Markovian Noise
Tobias Hangleiter, Pascal Cerfontaine, Hendrik Bluhm
Correlated, non-Markovian noise is present in many solid-state systems employed as hosts for quantum information technologies, significantly complicating the realistic theoretical…
Filter Functions for Quantum Processes under Correlated Noise
Pascal Cerfontaine, Tobias Hangleiter, Hendrik Bluhm
Many qubit implementations are afflicted by correlated noise not captured by standard theoretical tools that are based on Markov approximations. While independent gate operations a…