88 citations · 711 across the 23 of their papers we have counts for
18 papers · 1 filter
High-fidelity quantum control by polychromatic pulse trains
Svetoslav S. Ivanov, Boyan T. Torosov, Nikolay V. Vitanov
We introduce a quantum control technique using polychromatic pulse sequences (PPS), consisting of pulses with different carrier frequencies, i.e. different detunings with respect t…
Narrowband and passband composite pulses for variable rotations
Boyan T. Torosov, Svetoslav S. Ivanov, Nikolay V. Vitanov
We develop a systematic approach to derive narrowband (NB) and passband (PB) composite sequences which can produce any pre-selected transition probability with any desired accuracy…
Versatile microwave-driven trapped ion spin system for quantum information processing
Ch. Piltz, Th. Sriarunothai, S. Ivanov +2
Using trapped atomic ions we demonstrate a tailored and versatile effective spin-system suitable for quantum simulations and universal quantum computation. By simply applying micro…
Efficient construction of three- and four-qubit quantum gates by global entangling gates
Svetoslav S. Ivanov, Peter A. Ivanov, Nikolay V. Vitanov
We present improved circuits for the control-control-phase (Toffoli) gate and the control-swap (Fredkin) gate using three and four global two-qubit gates, respectively. This is a n…
Simplified implementation of the quantum Fourier transform with Ising-type Hamiltonians: Example with ion traps
Svetoslav S. Ivanov, Michael Johanning, Christof Wunderlich
We propose a simplified mathematical construction of the quantum Fourier transform which is suited for systems described by Ising-type Hamiltonians. By contrast to the standard Coo…
Composite two-qubit gates
Svetoslav S. Ivanov, Nikolay V. Vitanov
We design composite controlled-phase gates, which compensate errors in the phase of a single gate. The errors can be of various nature, such as relative, absolute or both. We prese…