Hartree–Fock interaction in superconducting condensate fractals

• Edward G. Nikonov,
• Yajiang Chen,
• Mauro M. Doria and
• Arkady A. Shanenko

Beilstein J. Nanotechnol. 2025, 16, 2177–2182, doi:10.3762/bjnano.16.150

• Edward G. Nikonov Yajiang Chen Mauro M. Doria Arkady A. Shanenko HSE University, 101000 Moscow, Russia Meshcheryakov Laboratory of Information Technologies, Joint Institute for Nuclear Research, Dubna, Russia Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation

Few-photon microwave fields for superconducting transmon-based qudit control

• Irina A. Solovykh,
• Andrey V. Pashchenko,
• Natalya A. Maleeva,
• Nikolay V. Klenov,
• Olga V. Tikhonova and
• Igor I. Soloviev

Beilstein J. Nanotechnol. 2025, 16, 1580–1591, doi:10.3762/bjnano.16.112

• effectively populated on a sub-nanosecond time scale. We also propose the quantum circuit design of a real superconducting system in which the predicted rapid control of the transmon-based qudit can be demonstrated. Keywords: Josephson “atoms”; non-classical fields; quantum state control; superconducting

Unipolar magnetic field pulses as an advantageous tool for ultrafast operations in superconducting Josephson “atoms”

• Daria V. Popolitova,
• Nikolay V. Klenov,
• Igor I. Soloviev,
• Sergey V. Bakurskiy and
• Olga V. Tikhonova

Beilstein J. Nanotechnol. 2019, 10, 1548–1558, doi:10.3762/bjnano.10.152

• picosecond time scale. The experimental realization of a circuit-on-chip for the discussed ultrafast control is presented. Keywords: adiabatic superconducting logic; Josephson “atoms”; quantum-state-control; superconducting qubits; ultrafast quantum operations; Introduction One of the main problems of

• of developments in algorithmic and adiabatic quantum computers, artificial metamaterials, and quantum neural networks. Hence, they seem to be very promising for studies of novel types of fast quantum-state control or initialization [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. In this work, we

Magnetic reversal dynamics of a quantum system on a picosecond timescale

• Nikolay V. Klenov,
• Alexey V. Kuznetsov,
• Igor I. Soloviev,
• Sergey V. Bakurskiy and
• Olga V. Tikhonova

Beilstein J. Nanotechnol. 2015, 6, 1946–1956, doi:10.3762/bjnano.6.199

• framework of the macroscopic theory of the magnetic moment, which allows for the comparison and explanation of the quantum and classical behavior. Keywords: atomic-based qubits; magnetization reversal; quantum state control; RSFQ; superconducting qubits; Introduction The study of magnetic moment dynamics