Ralf Betzholz

• ◎ Associate Professor
  

• ◎ Office: N817

• ◎ E-Mail: ralf_betzholz(at)hust.edu.cn

• ◎ PhD: Theoretical Quantum Physics Group at Saarland University 

• ◎ Postdoc: IQSQM, School of Physics, Huazhong University of Science and Technology

Research Interests

• ◎ Open quantum systems, Quantum master equations

• ◎ Quantum-state tomography

• ◎ Hybrid quantum systems, Quantum optomechanics

Preprints

• N/A

Publications

• ◎ J. Wang, D. Li*, R. Betzholz, and J. Cai, Real-Time Adaptive Sensing of Nuclear Spins by a Single-Spin Quantum Sensor, Phys. Rev. Applied 18, 024040 (2022) [Preprint: coming soon].

• ◎ S. B. Jäger, T. Schmit, G. Morigi, M. J. Holland, and R. Betzholz*, Lindblad Master Equations for Quantum Systems Coupled to Dissipative Bosonic Modes, Phys. Rev. Lett. 129, 063601 (2022) [Preprint: arXiv:2203.03302].

• ◎ R. Betzholz, Y. Liu*, and J. Cai, Pulsed characteristic-function measurement of a thermalizing harmonic oscillator, Phys. Rev. A 104, 012421 (2021) [Preprint: arXiv:2103.00877].

• ◎ R. Betzholz, B. G. Taketani, and J. M. Torres*, Breakdown signatures of the phenomenological Lindblad master equation in the strong optomechanical coupling regime, Quantum Sci. Technol. 6, 015005 (2021) [Preprint: arXiv:2007.03108]. 

• ◎ J. Tian, H. Liu*, Y. Liu, P. Yang, R. Betzholz, R. S. Said, F. Jelezko, and J. Cai, Quantum optimal control using phase-modulated driving fields, Phys. Rev. A 102, 043707 (2020) [Preprint: arXiv:2009.10275].

• ◎ W. Song*, T. Du, H. Liu, R. Betzholz, and J. Cai*, Nanotube double quantum dot spin transducer for scalable quantum information processing, New J. Phys. 22, 063029 (2020) [Preprint: arXiv:1909.01726].

• ◎ P. Yang, M. Yu, R. Betzholz*, C. Arenz, and J. Cai*, Complete Quantum-State Tomography with a Local Random Field, Phys. Rev. Lett. 124, 010405 (2020) [Preprint: arXiv:1909.09980].

• ◎ Y. Liu, J. Tian, R. Betzholz*, and J. Cai*, Pulsed Quantum-State Reconstruction of Dark Systems, Phys. Rev. Lett. 122, 110406 (2019) [Preprint: arXiv:1901.11232].

• ◎ J. M. Torres, R. Betzholz*, and M. Bienert, Optomechanical damping basis, J. Phys. A 52, 08LT02 (2019) [Preprint: arXiv:1809.03693].

• ◎ M. Jang, A. Kleber, T. Ruckelshausen, R. Betzholz, A. Manz*, Differentiation of the human liver progenitor cell line (HepaRG) on a microfluidic‐based biochip, J. Tissue Eng. Regen. Med. 13, 482 (2019).

• ◎ P. Cao, R. Betzholz*, and J. Cai, Scalable nuclear-spin entanglement mediated by a mechanical oscillator, Phys. Rev. B 98, 165404 (2018) [Preprint: arXiv:1810.03253].

• ◎ P. Cao, R. Betzholz*, S. Zhang, and J. Cai*, Entangling distant solid-state spins via thermal phonons, Phys. Rev. B 96, 245418 (2017) [Preprint: arXiv:1710.01455].

• ◎ L. Giannelli, R. Betzholz, L. Kreiner, M. Bienert, and G. Morigi, Laser and cavity cooling of a mechanical resonator with a nitrogen-vacancy center in diamond, Phys. Rev. A 94, 053835 (2016) [Preprint: arXiv:1607.06656].

• ◎ R. Betzholz* and M. Bienert, Resonance fluorescence of a laser-cooled atom in a non-harmonic potential, Eur. Phys. J. D 70, 215 (2016) [Preprint: arXiv:1605.05951].

• ◎ T. Holz, R. Betzholz*, and M. Bienert, Suppression of Rabi oscillations in hybrid optomechanical systems, Phys. Rev. A 92, 043822 (2015) [Preprint: arXiv:1507.00194].

• ◎ R. Betzholz, J. M. Torres, and M. Bienert, Quantum optical master equation for solid-state quantum emitters, Phys. Rev. A 90, 063818 (2014) [Preprint: arXiv:1411.0864].

• ◎ R. Betzholz, H. Gao*, Z. Zhao*, and U. Hartmann, Phenomenological theory of the giant magnetoimpedance of composite wires, EPL 101, 17005 (2013) [Preprint: arXiv:1212.0710].