Circuit Quantum Electrodynamics in a Magnetic Field

Quantum computers promise to solve certain problems such as quantum chemistry simulations much more efficiently than their classical counterparts. Although it is still unclear what material system will ultimately host large-scale quantum computers, solid-state systems are promising candidates due to their inherent scalability and advanced...

Evolution of Nanowire Transmon Qubits and Their Coherence in a Magnetic Field

We present an experimental study of flux- and gate-tunable nanowire transmons with state-of-the-art relaxation time allowing quantitative extraction of flux and charge noise coupling to the Josephson energy. We evidence coherence sweet spots for charge, tuned by voltage on a proximal side gate, where first order sensitivity to switching two...

Experimentally simulating the dynamics of quantum light and matter at deep-strong coupling

The quantum Rabi model describing the fundamental interaction between light and matter is a cornerstone of quantum physics. It predicts exotic phenomena like quantum phase transitions and ground-state entanglement in ultrastrong and deep-strong coupling regimes, where coupling strengths are comparable to or larger than subsystem energies....

Restless Tuneup of High-Fidelity Qubit Gates

We present a tuneup protocol for qubit gates with tenfold speedup over traditional methods reliant on qubit initialization by energy relaxation. This speedup is achieved by constructing a cost function for Nelder-Mead optimization from real-time correlation of nondemolition measurements interleaving gate operations without pause. Applying the...

Beweging in ondergrondse ruimten

Ouderen in ziekenhuizen - Problemen en oplossingen voor bouw en inrichting

Zelfredzaamheid van ouderen in ziekenhuizen: Problemen en oplossingen voor bouw en inrichting