Qubits, the quantum mechanical bits required for quantum computing, must retain their
quantum states for times long enough to allow the information contained in them to be …

In recent years, the physics community has experienced a revival of interest in spin effects in
solid state systems. On one hand, the solid state systems, particularly, semiconductors and …

The control of solid-state qubits requires a detailed understanding of the decoherence
mechanisms. Despite considerable progress in uncovering the qubit dynamics in strong …

One of the most enduring and intensively studied problems of x-ray astronomy is the
disagreement of state-of-the art theory and observations for the intensity ratio of two Fe XVII …

Control over quantum dynamics of open systems is one of the central challenges in quantum
science and engineering. Coherent optical techniques, such as coherent population …

We polarize nuclear spins in a GaAs double quantum dot by controlling two-electron spin
states near the anticrossing of the singlet (S) and m S=+ 1 triplet (T+) using pulsed gates. An …

The central-spin problem is a widely studied model of quantum decoherence. Dynamic
nuclear polarization occurs in central-spin systems when electronic angular momentum is …

For more than 40 years, most astrophysical observations and laboratory studies of two key
soft x-ray diagnostic 2 p-3 d transitions, 3 C and 3 D, in Fe XVII ions found oscillator strength …

Discrete time-translational symmetry in a periodically driven many-body system can be
spontaneously broken to form a discrete time crystal, an exotic new phase of matter. We …

We investigate the quantum phase transition (QPT) in the XXZ central spin model, which can
be described as a spin-1 2 particle coupled to N bath spins. In general, the QPT is supposed …