The efficiency of the future devices for quantum information processing is limited mostly by
the finite decoherence rates of the individual qubits and quantum gates. Recently …

We review the physical phenomena that arise when quantum mechanical energy levels are
modulated in time. The dynamics resulting from changes in the transition frequency is a …

Non-Hermitian physical systems have attracted considerable attention lately for their
unconventional behaviour around exceptional points (EPs)—spectral singularities at which …

The amplitude-damping time T 1 has long stood as the major factor limiting quantum fidelity
in superconducting circuits, prompting concerted efforts in the material science and design …

The gate fidelity and the coherence time of a quantum bit (qubit) are important benchmarks
for quantum computation. We construct a qubit using a single electron spin in an Si/SiGe …

A qubit subjected to pure dephasing due to classical Gaussian noise can be turned into a
spectrometer of this noise by utilizing its readout under properly chosen dynamical …

Progress in fabrication of semiconductor and superconductor qubits has greatly diminished
the number of decohering defects, thus decreasing the devastating low-frequency 1/f noise …

Recent progress with microfabricated quantum devices has revealed that an ubiquitous
source of noise originates in tunneling material defects that give rise to a sparse bath of …

We address the dynamics of entanglement and quantum discord for two noninteracting
qubits initially prepared in a maximally entangled state and then subjected to a classical …

The implementation of a Lambda scheme in superconducting artificial atoms could allow
detection of stimulated Raman adiabatic passage (STIRAP) and other quantum …