365 citations · 882 across the 8 of their papers we have counts for
8 papers
Measurement of a Vacuum-Induced Geometric Phase
Simone Gasparinetti, Simon Berger, Abdufarrukh A. Abdumalikov +3
Berry's geometric phase naturally appears when a quantum system is driven by an external field whose parameters are slowly and cyclically changed. A variation in the coupling betwe…
Measurement of geometric dephasing using a superconducting qubit
S. Berger, M. Pechal, P. Kurpiers +7
A quantum system interacting with its environment is subject to dephasing which ultimately destroys the information it holds. Using a superconducting qubit, we experimentally show…
Microwave-Induced Amplitude and Phase Tunable Qubit-Resonator Coupling in Circuit Quantum Electrodynamics
S. Zeytinoglu, M. Pechal, S. Berger +3
In the circuit quantum electrodynamics architecture, both the resonance frequency and the coupling of superconducting qubits to microwave field modes can be controlled via external…
Microwave-controlled generation of shaped single photons in circuit quantum electrodynamics
M. Pechal, L. Huthmacher, C. Eichler +5
Large-scale quantum information processors or quantum communication networks will require reliable exchange of information between spatially separated nodes. The links connecting t…
Experimental Realization of Non-Abelian Geometric Gates
A. A. Abdumalikov, J. M. Fink, K. Juliusson +4
The geometric aspects of quantum mechanics are underlined most prominently by the concept of geometric phases, which are acquired whenever a quantum system evolves along a closed p…
Exploring the Effect of Noise on the Berry Phase
S. Berger, M. Pechal, A. A. Abdumalikov +5
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 g…
Geometric phases in superconducting qubits beyond the two-level-approximation
S. Berger, M. Pechal, S. Pugnetti +5
Geometric phases, which accompany the evolution of a quantum system and depend only on its trajectory in state space, are commonly studied in two-level systems. Here, however, we s…
Geometric Phase and Non-Adiabatic Effects in an Electronic Harmonic Oscillator
M. Pechal, S. Berger, A. A. Abdumalikov +5
Steering a quantum harmonic oscillator state along cyclic trajectories leads to a path-dependent geometric phase. Here we describe an experiment observing this geometric phase in a…