874 citations · 3.8k across the 136 of their papers we have counts for
8 papers · 2 filters
Controlled Quantized Adiabatic Transport in a superlattice Wannier-Stark ladder
R. G. Unanyan, N. V. Vitanov, M. Fleischhauer
The Born-Fock theorem is one of the most fundamental theorems of quantum mechanics and forms the basis for reliable and efficient navigation in the Hilbert space of a quantum syste…
Narrowband composite two-qubit phase gates
Boyan T. Torosov, Nikolay V. Vitanov
We propose a method to construct composite two-qubit gates with narrowband profiles with respect to the spin-spin coupling. The composite sequences are selective to the variations…
Coherent interaction of multistate quantum systems possessing the Majorana and Morris-Shore dynamic symmetries with pulse trains
Stancho G. Stanchev, Nikolay V. Vitanov
We present exact analytic formulae which describe the interaction of multistate quantum systems possessing the Majorana and Morris-Shore dynamic symmetries with a train of pulses.…
Extension of the Morris-Shore transformation to arbitrary time-dependent driving fields
K. N. Zlatanov, A. A. Rangelov, N. V. Vitanov
The treatment of time-dependent dynamics of quantum systems involving multiple states poses considerable technical challenges. One of the most efficient approaches in treating such…
Robust, fast and high-fidelity composite single-qubit gates for superconducting transmon qubits
Hristo G. Tonchev, Boyan T. Torosov, Nikolay V. Vitanov
We introduce a novel quantum control method for superconducting transmon qubits that substantially outperforms conventional techniques in precision and robustness against coherent…
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…
Preserving multi-level quantum coherence by dynamical decoupling
Xinxing Yuan, Yue Li, Mengxiang Zhang +6
Quantum information processing with multi-level systems (qudits) provides additional features and applications than the two-level systems. However, qudits are more prone to dephasi…
Experimental demonstration of composite pulses on IBM's quantum computer
Boyan T. Torosov, Nikolay V. Vitanov
We perform comprehensive experimental tests of various composite pulse sequences using one of open-access IBM's quantum processors, based on superconducting transmon qubits. We imp…