# Overview

*information is*embodied in some

*physical*system; the capabilities of such an information processing device are derived from its physical properties. It is known that if the device is quantum mechanical, i.e., it exploits the physical laws of quantum mechanics, then its capabilities can exceed those of classical devices. Taking a

*theoretical physics*approach, our group investigates

*solid-state systems for quantum information processing*. In particular, we investigate single electron spin dynamics and coherence in semiconductor and carbon nanostructores (quantum dots, quantum wires, etc.) as well as superconducting qubits. Further research areas include light-matter interactions between solid-state qubits and photons, optical cavities and the use of cavity quantum electrodynamics for quantum information processing, and the production, dynamics, and characterization of entanglement in solid-state systems. We are also working on the theory of quantum computation and quantum information. (read more) (deutsch)

Hear theoretical physicists John Preskill and Spiros Michalakis

describe quantum computing on YouTube.

(illustrated by Jorge Cham of PhD Comics)

**Contact**

Guido.Burkard@uni-konstanz.de,
Department of Physics
(personal details, contact details)

**research highlights**

**A Coherent Spin-Photon Interface in Silicon**

X. Mi, M. Benito, S. Putz, D. M. Zajac, J. M. Taylor, G. Burkard, and J. R. Petta

Nature 555, 599 (2018)

University of Konstanz News Release [English / Deutsch]

theory paper:

M. Benito, X. Mi, J. M. Taylor, J. R. Petta, and G. Burkard

Phys. Rev. B 96, 235434 (2017)

**Resonantly driven CNOT gate for electron spins**

D.M. Zajac, AJ. Sigillito, M. Russ, F. Borjans, J.M. Taylor, G. Burkard, J.R. Petta

Science 359, 439 (2018)

Related Nature News article Silicon gains ground in quantum-computing race

University of Konstanz News Release [English / Deutsch]

theory paper:

M. Russ, D. M. Zajac, A. J. Sigillito, F. Borjans, J. M. Taylor, J. R. Petta, and G. Burkard

Phys. Rev. B 97, 085421 (2018)

**Accelerated quantum control using superadiabatic dynamics in a solid-state lambda system**

B.B. Zhou, A. Baksic, H. Ribeiro, C.G. Yale, J.F. Heremans, P.C. Jerger, A. Auer, G. Burkard, A.A. Clerk, D.D. Awschalom

Nature Physics 13, 330 (2017)

University of Konstanz News Release [English / Deutsch]

## New Publications

- Effective theory of monolayer TMDC double quantum dots
- Floquet spectroscopy of a strongly driven quantum dot charge qubit with a microwave resonator
- Theory of Strain-Induced Confinement in Transition Metal Dichalcogenide Monolayers
- Tunable Berry curvature, valley and spin Hall effect in Bilayer MoS2
- Resonantly driven CNOT gate for electron spins
- High-fidelity quantum gates in Si/SiGe double quantum dots