A5028336391- Quantum and electron transport phenomena
- Physics of Superconductivity and Magnetism
- Topological Materials and Phenomena
- Quantum Computing Algorithms and Architecture
- Quantum Information and Cryptography
- Photonic and Optical Devices
- Surface and Thin Film Phenomena
- Semiconductor Quantum Structures and Devices
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Optic Sensors
- Graphene research and applications
QuTech
2017-2020
Delft University of Technology
2017-2020
Netherlands Organisation for Applied Scientific Research
2016
Quantum computation by non-Abelian Majorana zero modes (MZMs) offers an approach to achieve fault tolerance encoding quantum information in the non-local charge parity states of semiconductor nanowire networks topological superconductor regime. Thus far, experimental studies MZMs chiefly relied on single electron tunneling measurements which leads decoherence stored MZM. As a next step towards computation, conserving experiments based Josephson effect are required, can also help exclude...
We report a comparative study on microwave control lines for transmon qubit using (i) flexible stripline transmission and (ii) semi-rigid coaxial cables. During each experiment, we performed repeated measurements of the energy relaxation coherence times one wiring configurations. Each measurement run spanned 70–250 h time, four separate cooldowns were so that configuration could be tested twice. From these datasets, observe changing from cables to does not have measurable effect compared...
Serial double quantum dots created in semiconductor nanostructures provide a versatile platform for investigating two-electron spin states, which can be tuned by electrostatic gating and an external magnetic field. In this work, we directly measure the supercurrent reversal between adjacent charge states of InAs nanowire dot with superconducting leads, good agreement theoretical models. even parity sector, observe blockade increasing field, corresponding to singlet triplet transition. Our...
In this paper, we compare ring resonator and three-port Mach-Zehnder Interferometer (MZI) devices fabricated on silicon-on-insulator for the purpose of refractive index sensing. Their respective sensitivities limits detection (LOD) were determined with NaCl solutions. A sensitivity 113.07 nm per unit (RIU) LOD 2.47e-6 RIU was reached resonators. The most sensitive MZI has a 13051 rad/RIU, an 2.76e-8 is shown to be attainable. combines several advantages both resonators normal devices,...
We measured the Josephson radiation emitted by an InSb semiconductor nanowire junction utilizing photon-assisted quasiparticle tunneling in ac-coupled superconducting tunnel junction. quantify action of local microwave environment evaluating frequency dependence inelastic Cooper-pair and find zero-frequency impedance $Z(0)=492\phantom{\rule{0.28em}{0ex}}\mathrm{\ensuremath{\Omega}}$ with a cutoff ${f}_{0}=33.1\phantom{\rule{0.28em}{0ex}}\mathrm{GHz}$. extract circuit coupling efficiency...
We report a comparative study on microwave control lines for transmon qubit using: (i) flexible stripline transmission lines, and (ii) semi-rigid coaxial cables. During each experiment we performed repeated measurements of the energy relaxation coherence times using one wiring configurations. Each measurement run spanned 70 h to 250 time, four separate cooldowns were so that configuration could be tested twice. From these datasets observe changing from cables does not have measurable effect...