874 citations · 3.8k across the 136 of their papers we have counts for
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Characterization of high-fidelity Raman qubit gates
Stancho G. Stanchev, Nikolay V. Vitanov
Raman qubits, represented by two ground or metastable quantum states coupled via an intermediate state, hold some advantages over directly coupled qubits, most notably much longer…
Defying Conventional Wisdom in Spectroscopy: Power Narrowing on IBM Quantum
Ivo S. Mihov, Nikolay V. Vitanov
Power broadening the broadening of the spectral line profile of a two-state quantum transition as the amplitude of the driving field increases is a well-known and thoroughl…
Deterministic generation of arbitrary ultrasmall excitation of quantum systems by composite pulse sequences
Hayk L. Gevorgyan, Nikolay V. Vitanov
In some applications of quantum control, it is necessary to produce very weak excitation of a quantum system. Such an example is presented by the concept of single-photon generatio…
Ultrahigh-fidelity composite quantum phase gates
Hayk L. Gevorgyan, Nikolay V. Vitanov
A number of composite pulse (CP) sequences for four basic quantum phase gates -- the Z, S, T and general phase gates -- are presented. The CP sequences contain up to 18 pulses and…
Pulse shape effects in qubit dynamics demonstrated on an IBM quantum computer
Ivo S. Mihov, Nikolay V. Vitanov
We present a study of the coherent interaction of a qubit with a pulse-shaped external field of a constant carrier frequency. We explore, theoretically and experimentally, the tran…