Ivan P. Christov

Professor, D.Sc., Ph.D.

Sofia University
Physics Department
5 James Bourchier Str
1164 Sofia, Bulgaria

Tel: ( +3592) 8161 741



Biographical Information

List of Publications

  • Wave and quantum optics
  • Photonic structures
  • Physics of high-power optical fields
Research interests and key publications:
Dr. Christov's research has been directed to development of advanced methods for generation and amplification of ultrashort coherent pulses
in the visible and x-ray spectral domains. He and his collaborators proposed how linearly polarized femtosecond IR pulses can be used to
generate isolated attosecond x-ray pulses by atoms and free relativistic electrons, and how to amplify these pulses by strong-field quasi-phase
matching in modulated waveguides. He currently is working on theoretical models to better understand light-matter interaction in attosecond
time scale that include development of new time-dependent quantum Monte Carlo methods.

·         propagation of few-cycle optical pulsesOptics Commun. 53, 364 (1985).

·         femtosecond lasers, Opt. Lett. 20, 309 (1995).

·         generation of isolated attosecond pulses by relativistic acceleration of free electrons, Opt. Commun. 148, 75 (1998).

·         generation of isolated attosecond pulses by few cycle laser pulses, Phys. Rev. Lett. 78, 1251 (1997).

·         amplification of isolated attosecond pulses by quasi-phase matching techniques, J. Opt. Soc. Am. B 18, 1877(2001).

·         coherent control in the strong-field regime,  Phys. Rev. Lett. 86, 5458 (2001).


·         correlated electron dynamics, time-dependent quantum Monte Carlo:

1.      I. P. Christov, "Correlated non-perturbative electron dynamics with quantum trajectories," Opt. Express 14, 6906 (2006).

2.      I. P. Christov, "Quantum trajectory perspective of atom-field interaction in attosecond time scale", Appl. Phys. B 85, 503 (2006).

3.      I. P. Christov, “Time dependent quantum Monte Carlo: preparation of the ground state”, New J. Phys. 9, 70, (2007).

4.      I. P. Christov, “Time dependent quantum Monte Carlo and the stochastic quantization”, J. Chem. Phys., 127, 134110 (2007).

5.      I. P. Christov, “Dynamic correlations with time-dependent quantum Monte Carlo”, J. Chem. Phys. 128, 244106 (2008).

6.      I. P. Christov, “Molecular dynamics with time-dependent quantum Monte-Carlo”, J. Chem. Phys. 129, 214107 (2008).

7.      I. P. Christov, “Polynomial-Time-Scaling Quantum Dynamics with Time-Dependent Quantum Monte Carlo”, J. Phys. Chem. A 113, 6016 (2009).

8.      I. P. Christov, “Correlated electron dynamics with time-dependent quantum Monte Carlo: three-dimensional helium”, J. Chem. Phys. 135, 044120 (2011); 135, 149902 (2011).

9.      I. P. Christov, “Exploring quantum non-locality with de Broglie-Bohm trajectories”, J. Chem. Phys. 136, 034116 (2012).

10.  I. P. Christov, “Electron-pair densities with time-dependent quantum Monte Carlo”, Journal of Atomic and Molecular Physics, vol.2013, Article ID 424570 (2013); https://www.hindawi.com/archive/2013/424570/

11.  I. P. Christov, “Double-slit interference with charged particles: density matrices and decoherence from time-dependent quantum Monte Carlo”, Phys. Scr. 91, 015402 (2015); arXiv:1505.03746 [quant-ph](2015).

12.  I. P. Christov, “Quantum dynamics at finite temperature: Time-dependent quantum Monte Carlo study”, Ann. Phys. 371, 368 (2016).

13.  I. P. Christov, “A statistical perspective on particle-wave duality of matter: unlocking the quantum correlations’, arXiv:1609.03298 [quant-ph](2016).

14.  I. P. Christov, “Particle-wave dichotomy in quantum Monte Carlo: unlocking the quantum correlations”,  J. Opt. Soc. Am. B 34, 1817 (2017).

15.  I. P. Christov, “Time dependent spatial entanglement in atom-field interaction”, Phys. Scr. 94, 045401 (2019); https://arxiv.org/abs/1809.05855[quant-ph](2018).

16.  I. P. Christov, “Phase-locking mechanism in non-sequential double ionization”, Appl. Phys. B 125, 1 (2019).

17.  I. P. Christov, “Spatial Non-locality in Confined Quantum Systems: A Liaison with Quantum Correlations”, Few-Body Syst. 61, 45 (2020); https://arxiv.org/abs/2011.00967.

18.  I. P. Christov, “Spatial Entanglement of Fermions in One-Dimensional Quantum Dots”, Entropy 23, 868 (2021).

19.  I. P. Christov, “Effects of Spatial Nonlocality versus Nonlocal Causality for Bound Electrons in External Fields”, Entropy 24, 840 (2022).

20.  I. P. Christov, “Local Entanglement of Electrons in 1D Hydrogen Molecule”, Entropy 25, 1308 (2023).