By strongly driving a transmon-resonator system, the transmon qubit may eventually escape from its cosine-shaped potential. This process is called transmon ionization (TI) and known to be detrimental
This thesis reports the study of experimental optimal control of superconducting qubits. Common approaches of optimal control utilize numerical models to optimize control shapes that implement
Magnon-mechanics in suspended nano-structures (experiment)
Nano-mechanical strings are archetypical harmonic oscillators and can be straightforwardly integrated with other nanoscale systems. For
| M. Huber, M. Grayson, M. Rother, W. Biberacher, W. Wegscheider & G. Abstreiter
| M. Grayson, M. Huber, M. Rother, W. Biberacher, W. Wegscheider, M. Bichler & G. Abstreiter
We investigate the magnon transport in ferrimagnetic and antiferromagnetic materials in-depth. Our results shed further light into the present understanding of magnon transport manipulated via a
| V.N. Zverev, W. Biberacher, S. Oberbauer, I. Sheikin, P. Alemany, E. Canadell, M.V. Kartsovnik
| M. V. Kartsovnik, V. N. Zverev, W. Biberacher, S. V. Simonov, I. Sheikin, N. D. Kushch, E. B. Yagubskii
| T. Helm, M. V. Kartsovnik, C. Proust, B. Vignolle, C. Putzke, E. Kampert, I. Sheikin, E.-S. Choi, J. S. Brooks, N. Bittner, W. Biberacher, A. Erb, J. Wosnitza, R. Gross
| D. Andres, M. Kartsovnik, W. Biberacher, K. Neumaier, I. Sheikin, H. Müller, N. Kushch
| M. V. Kartsovnik, T. Helm, C. Putzke, F. Wolff-Fabris, I. Sheikin, S. Lepault, C. Proust, D. Vignolles, N. Bittner, W. Biberacher, A. Erb, J. Wosnitza, and R. Gross
| T. Helm, M. V. Kartsovnik, I. Sheikin, M. Bartkowiak, F. Wolff-Fabris, N. Bittner, W. Biberacher, M. Lambacher, A. Erb, J. Wosnitza, R. Gross
| M.V. Kartsovnik, D. Andres, S.V. Simonov, W. Biberacher, I. Sheikin, N.D. Kushch & H. Müller
| M.V. Kartsovnik, S. Simonov, D. Andres, W. Biberacher, N. Kushch, H. Müller & I. Sheikin
| Andres, D.; Kartsovnik, M. V.; Biberacher, W.; Neumaier, K.; Sheikin, I.; Mueller, H.; Kushch, N. D.
| B. G. U. Englert, G. Mangano, M. Mariantoni, R. Gross, J. Siewert, E. Solano
We studied the electronic Raman spectra of (Li1−xFex)OHFeSe as a function of light polarization and temperature. In the B1g spectra alone we observe the redistribution of spectral weight expected for
| Kargl, V.; Mirmelstein, A.; Boeni, P.; Sheptyakov, D.; Amato, A.; Kazakov, S.; Karpinski, J.; Erb, A.
| V.N. Zverev, M.K. Kartsovnik, W. Biberacher, S.S. Khasanov, R.P. Shibaeva, L. Quahab, L. Toupet, N.D. Kushch, E.B. Yagubskii, E. Canadell
| Khasanov, SS; Zorina, LV; Shibaeva, RP; Pesotskii, SI; Kartsovnik, MV; Veiros, LF; Canadell, E
| Laukhin, V; Ribera, E; Rovira, C; Veciana, J; Gener, M; Canadell, E; Togonidze, T; Khasanov, S; Shibaeva, R; Biberacher, W; Andres, K; Kartsovnik, MV
| Gorshkov, A. V. and Rabl, P. and Pupillo, G. and Micheli, A. and Zoller, P. and Lukin, M. D. and Buechler, H. P.
| N. Munnikes, B. Muschler, F. Venturini, L. Tassini, W. Prestel, Shimpei Ono, Yoichi Ando, D. C. Peets, W. N. Hardy, Ruixing Liang, D. A. Bonn, A. Damascelli, H. Eisaki, M. Greven, A. Erb, and R.
| M. Lavagnini, F. Pfuner, R. Monnier, L. Degiorgi, H.-M. Eiter, L. Tassini, B. Muschler, R. Hackl, J.-H. Chu, N. Ru, K.Y. Shin, I.R. Fisher,
| S Berger and M Pechal and P Kurpiers and A A Abdumalikov and C Eichler and J A Mlynek and A Shnirman and Y Gefen and A Wallraff and S Filipp
With his work on the experimental optimal control of superconducting qubits he showed how to achieve high fidelity gates on a very short timescale.
| A. Morello, J.J. Pla, F.A. Zwannenburg, K.W. Chan, K.Y. Tan, H. Huebl, M. Möttönen, C.D. Nugroho, C. Yang, J.A. van Donkelaar, A.D.C. Alves, D.N. Jamieson, C.C. Escott, L.C.L. Hollenberg, R.G.
Quantum algorithms often benefit from the ability to execute multi-qubit (>2) gates. To date such multi-qubit gates are typically decomposed into single- and two-qubit gates, particularly in
Classical interferometers are indispensable tools for the precise determination of various physical quantities. Their accuracy is bound by the standard quantum limit. This limit can be overcome by
For experiments in the sub-Kelvin temperature regime with high demands for an extremely low level of vibration, a pulse tube precooled dilution refrigerator (DR) is described where the (vibration
WMI researchers develop a nonlinear Quantum Microwave Parametric Interferometer (QuMPI) with a signal-to-noise ratio exceeding the shot-noise limit
We make use of a superconducting qubit to study the effects of noise on adiabatic geometric phases. The state of the system, an effective spin one-half particle, is adiabatically guided along a
Most of solid-state spin physics arising from spin–orbit coupling, from fundamental phenomena to industrial applications, relies on symmetry-protected degeneracies. So does the Zeeman spin–orbit
We experimentally study the tunability of the cooperativity in coupled spin-cavity systems by changing the magnetic state of the spin system via an external control parameter. As a model system, we
For applications making use of magnonic spin currents damping effects, which decrease the spin conductivity, have to be minimized. We here investigate the magnon transport in a yttrium iron garnet
Polarization- and temperature-dependent Raman data along with theoretical simulations are presented for the Kagome ferromagnet Fe3Sn2. Eight out of nine expected phonon modes are identified. The
We report on the magnetic behavior of oxidized-CoxFe1−xS2 nanocrystals as they assemble to form nanoparticles. The morphologies show a typical NP size of around 250–100 nm and NC sizes of around 7
We study the incoherent transport of bosonic particles through a one dimensional lattice with different left and right hopping rates, as modelled by the asymmetric simple inclusion process (ASIP).
We study the collective decay of an initially inverted ensemble of two-level emitters into a squeezed photonic reservoir. By using a quantum-state diffusion approach to unravel the emission process,
WMI showcased its 17-qubit superconducting quantum processor inside a Bluefors cryostat at the DPG Spring Meeting in Dresden.
