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 …

The efficiency of the future devices for quantum information processing will be limited mostly
by the finite decoherence rates of the qubits. Recently, substantial progress was achieved in …

We investigate decoherence due to pure dephasing of a localized spin qubit interacting with
a nuclear spin bath. Although in the limit of a very large magnetic field the only decoherence …

A central challenge for implementing quantum computing in the solid state is decoupling the
qubits from the intrinsic noise of the material. We investigate the implementation of quantum …

Quantum optimal control theory allows us to design accurate quantum gates. We employ it to
design high-fidelity two-bit gates for Josephson charge qubits in the presence of both …

To verify the hypothesis about the common origin of the low-frequency 1/f noise and the
quantum f noise recently measured in the Josephson charge qubits, we study the …

We present and analyze the fermionic time-evolving density matrix using orthogonal
polynomials algorithm (fTEDOPA), which enables the numerically exact simulation of open …

Robustness of edge states and non-Abelian excitations of topological states of matter
promises quantum memory and quantum processing, which are naturally immune to …

We investigate the time evolution of a charge qubit subject to quantum telegraph noise
produced by a single electronic defect level. We obtain results for the time evolution of the …

Dephasing decoherence induced by interaction of one qubit with a quantum bath can be
simulated classically by random unitary evolution without the need for a bath and this …