Nikola Paunkovic

Academic position:	Researcher
Joining date:	31-12-2006
Roles in IT:	Researcher
Thematic Line:	Basic Sciences and Enabling Technologies
Group:	Security and Quantum Information - Lx

Email: Send Email
Address: IT – Lisboa
Instituto Superior Técnico - Torre Norte - Piso 10
Av. Rovisco Pais, 1
1049 - 001 Lisboa
Tel: +351 21 841 84 54
Fax: +351 21 841 84 72

https://www.orcid.org/0000-0002-9345-4321

Scientific Achievements

Degrees

PhD, Oxford University, 06-02-2005

Academic Activities

6Supervision of PhD theses

As Supervisor

Tracking topological phase transitions using quantum information geometric quantities, PhD Student, Syed Tahir Amin, Defended 01-2020

As Co-supervisor

Asymmetric Quantum Cryptography and Multipartite Correlations, PhD Student, Mariano José Lemus Hernández, Defended 03-2022
Nonlocality and Contextuality: Concepts and Applications in Quantum Information, PhD Student, Ricardo André Faleiro Miguel, Defended 03-2022
Practical Quantum Privacy Protocols, PhD Student, Preeti Yadav, Defended 12-2020
Quantum walks in cryptography and finite-temperature topological phase transitions, PhD Student, Chrysoula Vlachou, Defended 09-2018
Quantum oblivious transfer, PhD Student, João Paulo do Amaral de Jesus Rodrigues, Defended 03-2017

Publications

2Books Chapters

P. Mateus, N. Paunkovic, J. Rodrigues, A. Souto, Enhancing privacy with quantum networks, Chapter in, Proceedings of CMS 2014, Springer, Berlin, 2014
N. Paunkovic, V. Vieira, Macroscopic thermal entanglement, Chapter in, Strongly Correlated Systems, Coherence and Entanglement, World Scientific Publishing, Singapore, 2007

43Papers in Journals

M. Lemus, R.F Miguel, N. Paunkovic, P. Mateus, A. Souto, Quantum Kolmogorov complexity and quantum correlations in deterministic-control quantum Turing machines, Quantum, Vol. 8, No. 1, pp. 1230 - 1230, January, 2024 | BibTex
R.F Miguel, N. Paunkovic, MV Vojinovic, Operational interpretation of the vacuum and process matrices for identical particles, Quantum, Vol. 7, No. 1, pp. 986 - 986, April, 2023,
| Abstract | BibTex
N. Paunkovic, MV Vojinovic, Equivalence Principle in Classical and Quantum Gravity, Universe, Vol. 8, No. 598, pp. 1 - 16, November, 2022,
| Abstract | BibTex
B. Mera, N. Paunkovic, S. T. Amin, V. Vieira, Information geometry of quantum critical submanifolds: Relevant, marginal, and irrelevant operators, Physical Review B - Condensed Matter and Materials Physics, Vol. 106, No. 15, pp. 155101 - 155101, October, 2022 | BibTex
F. Massa, P. Yadav, A. Moqanaki, W. Krawec, P. Mateus, N. Paunkovic, A. Souto, P. Walther, Experimental Semi-quantum Key Distribution With Classical Users, Quantum, Vol. 6, No. 1, pp. 819 - 819, September, 2022 | BibTex
H. S. Silva, N. Paunkovic, B. Mera, Interferometric geometry from symmetry-broken Uhlmann gauge group with applications to topological phase transitions, Physical Review B - Condensed Matter and Materials Physics, Vol. 103, No. 8, pp. 085127-01 - 085127-14, February, 2021,
| Abstract | BibTex
M. Lemus, M. F. Ramos, P. Yadav, N. A. Silva, N. J. Muga, A. Souto, N. Paunkovic, P. Mateus, A. N. Pinto, Generation and Distribution of Quantum Oblivious Keys for Secure Multiparty Computation, Applied Sciences (Switzerland), Vol. 10, No. 12, pp. 4080 - 4080, June, 2020,
| Abstract | BibTex
N. Paunkovic, MV Vojinovic, Causal orders, quantum circuits and spacetime: distinguishing between definite and superposed causal orders, Quantum, Vol. 4, No. 5, pp. 275 - 275, May, 2020 | BibTex
M. Lemus, J. Beirão, N. Paunkovic, A. M. Carvalho, P. Mateus, Information-Theoretical Criteria for Characterizing the Earliness of Time-Series Data, Entropy, Vol. 22, No. 1, pp. 49 - 49, January, 2020 | BibTex
F. P. Pipa, N. Paunkovic, MV Vojinovic, Entanglement-induced deviation from the geodesic motion in quantum gravity, Journal of Cosmology and Astroparticle Physics, Vol. 2019, No. 1, pp. 1 - 2, September, 2019 | BibTex
P. Yadav, P. Mateus, N. Paunkovic, A. Souto, Quantum contract signing with entangled pairs., Entropy, Vol. 21, No. 9, pp. 821 - 821, August, 2019 | BibTex
S. T. Amin, B. Mera, N. Paunkovic, V. Vieira, Information geometric analysis of long range topological superconductors, Journal of Physics Condensed Matter, Vol. in print, No. 1, pp. 1 - 1, August, 2019 | BibTex
N. Paunkovic, L. J. Ju, M. Yang, W.-J. C. Chu, Z. Cao, Creating photonic GHZ and W states via quantum walk, Quantum Information Processing, Vol. 18, No. 6, pp. 176 - 176, April, 2019,
| Abstract | BibTex
P.D. Sacramento, B. Mera, N. Paunkovic, Vanishing k-space fidelity and phase diagram’s bulk-edge-bulk correspondence, Annals of Physics, Vol. 401, No. -, pp. 40 - 59, December, 2018,
| Abstract | BibTex
B. Mera, S. T. Amin, C. V. Vlachou, N. Paunkovic, V. Vieira, Fidelity and Uhlmann connection analysis of topological phase transitions in two dimensions, Physical Review B - Condensed Matter and Materials Physics, Vol. 98, No. 24, pp. 245141-1 - 245141-19, December, 2018,
| Abstract | BibTex
C. V. Vlachou, W. Krawec, P. Mateus, N. Paunkovic, A. Souto, Quantum key distribution with quantum walks, Quantum Information Processing, Vol. 17, No., pp. 288 - 288, August, 2018 | BibTex
N. Paunkovic, MV Vojinovic, Gauge protected entanglement between gravity and matter, Classical and Quantum Gravity, Vol. 35, No. 18, pp. 185015 -, August, 2018 | BibTex
B. Mera, C. V. Vlachou, N. Paunkovic, V. Vieira, O. Viyuela, Dynamical phase transitions at finite temperature from fidelity and interferometric Loschmidt echo induced metrics, Physical Review B - Condensed Matter and Materials Physics, Vol. 97, No. 9, pp. 094110-1 - 094110-15, March, 2018,
| Abstract | BibTex
X. Li, M. Yang, N. Paunkovic, D. Li, Z. Cao, Entanglement swapping via three-step quantum walk-like protocol, Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 381, No. 46, pp. 3875 - 3879, December, 2017 | BibTex
B. Mera, C. V. Vlachou, N. Paunkovic, V. Vieira, Boltzmann–Gibbs states in topological quantum walks and associated many-body systems: fidelity and Uhlmann parallel transport analysis of phase transitions, Journal of Physics A: Mathematical and Theoretical, Vol. 50, No. 36, pp. 365302 - 365302-17, August, 2017,
| Abstract | BibTex
B. Mera, C. V. Vlachou, N. Paunkovic, V. Vieira, Uhlmann connection in fermionic systems undergoing phase transitions, Physical Review Letters, Vol. 119, No. 1, pp. 015702 - 015702-6, July, 2017,
| Abstract | BibTex
J. Rodrigues, P. Mateus, N. Paunkovic, A. Souto, Oblivious transfer based on single-qubit rotations, Journal of Physics A: Mathematical and Theoretical, Vol. 50, No. 20, pp. 205301 - 205301, April, 2017 | BibTex
J. Rodrigues, P. Mateus, N. Paunkovic, A simulator for discrete quantum walks on lattices, International Journal of Modern Physics C, Vol. 1, No. 1750055, pp. 1 - 21, March, 2017 | BibTex
R. Loura Loura, D. Arsenović, N. Paunkovic, D. Popovic, S. Prvanović, Security of two-state and four-state practical quantum bit-commitment protocols, Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 94, No. 1, pp. 062335 - 062335, December, 2016 | BibTex
A. Almeida, A. Stojanovic, N. Paunkovic, R. Loura Loura, N. J. Muga, N. A. Silva, P. Mateus, P.S André, A. N. Pinto, Implementation of a two-state quantum bit commitment protocol in optical fibers, Journal of Optics (United Kingdom), Vol. 18, No. 1, pp. 015202 - 015202, January, 2016,
| Abstract | BibTex
Haozhen Situ, D. Qiu Qiu, P. Mateus, N. Paunkovic, Secure N-dimensional simultaneous dense coding and applications, International Journal of Quantum Information, Vol. 13, No. 6, pp. 155051-1 - 155051-25, December, 2015 | BibTex
C. V. Vlachou, P. Mateus, J. Rodrigues, N. Paunkovic, A. Souto, Quantum walk public-key cryptographic system, International Journal of Quantum Information, Vol. 13, No. 6, pp. 1550050-1 - 1550050-10, December, 2015 | BibTex
A. Souto, P. Mateus, P. Adão, N. Paunkovic, Reply to “Comment on ‘Bit-string oblivious transfer based on quantum state computational distinguishability’ ”, Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 92, No. 4, pp. 046302 - 046312, October, 2015,
| Abstract | BibTex
A. Souto, P. Mateus, P. Adão, N. Paunkovic, Bit-string oblivious transfer based on quantum state computational distinguishability, Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 91, No. 1, pp. 042306 - 042306, April, 2015,
| Abstract | BibTex
R. Loura Loura, A. Almeida, P.S André, A. N. Pinto, P. Mateus, N. Paunkovic, Noise and measurement errors in a practical two-state quantum bit commitment protocol, Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 89, No. 5, pp. 052336-1 - 052336-15, May, 2014,
| Abstract | BibTex
P.D. Sacramento, N. Paunkovic, V. Vieira, Fidelity spectrum and phase transitions of quantum systems, Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 84, No. 6, pp. 062318 - 062318, December, 2011 | BibTex
N. Paunkovic, J. Bouda, P. Mateus, Fair and Optimistic Quantum Contract Signing, Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 84, No. 6, pp. 062331 - 062331, December, 2011 | BibTex
J. Bouda, P. Mateus, N. Paunkovic, J. Rasga, On the power of quantum tamper-proof hardware, International Journal of Quantum Information, Vol. 6, No. 2, pp. 219 - 236, February, 2008 | BibTex
N. Paunkovic, V. Vieira, Macroscopic distinguishability between quantum states defining different phases of matter: Fidelity and the Uhlmann geometric phase, Physical Review E, Vol. 77, No. -, pp. - - -, January, 2008 | BibTex
N. Paunkovic, P.D. Sacramento, P. Nogueira, V. Vieira, V. K. Dugaev, Fidelity between partial states as signature of quantum phase transitions, Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 77, No. -, pp. 052302 - 052302, January, 2008 | BibTex
Y. Omar, N. Paunkovic, L. Sheridan, S. Bose, Quantum walk on a line with two entangled particles, Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 74, No. 1, pp. 042304 - 042304, October, 2006 | BibTex
L. Sheridan, N. Paunkovic, Y. Omar, S. Bose, Discrete time quantum walk on a line with two particles, International Journal of Quantum Information, Vol. 4, No. 3, pp. 573 - 583, January, 2006 | BibTex
P. Zanardi, N. Paunkovic, Ground state overlap and quantum phase transitions, Physical Review E, Vol. 74, No. -, pp. 031123 - 031123, January, 2006 | BibTex
C. Brukner, N. Paunkovic, T. Rudolph, V. Vedral, Entanglement-assisted orientation in space, International Journal of Quantum Information, Vol. 4, No. 2, pp. 219 - 236, January, 2006 | BibTex
S. Bose, A. Ekert, Y. Omar, N. Paunkovic, V. Vedral, Optimal state discrimination using particle statistics, Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 68, No. -, pp. 052309 - 052309, January, 2003 | BibTex
Y. Omar, N. Paunkovic, S. Bose, V. Vedral, Spin-space entanglement transfer and quantum statistics, Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 65, No. -, pp. 062305 - 062305, January, 2002 | BibTex
N. Paunkovic, Y. Omar, S. Bose, V. Vedral, Entanglement concentration using quantum statistic, Physical Review Letters, Vol. 88, No. -, pp. 187903 - 187903, January, 2002 | BibTex
V. Bozin, M. Hruska, N. Paunkovic, F. Herbut, On statistical and deterministic quantum teleportation, International Journal of Modern Physics A, Vol. 31, No. -, pp. 4403 - 4403, January, 1998 | BibTex

7Papers in Conferences

N. A. Silva, M. J. Ferreira, M. A. Carvalho, A. Souto, N. Paunkovic, P. Mateus, A. Teixeira, A. N. Pinto, A Network Server for Distributing Quantum Random Numbers, International Conf. on Transparent Networks – ICTON, Bucharest, Romania, Vol., pp. -, July, 2023,
| Abstract | BibTex
N. Paunkovic, R.F Miguel, MV Vojinovic, Distinguishing between definite and superposed causal orders, Time and clocks, Bad Honnef, Germany, March, 2023 | Full text (PDF 47 KBs) | BibTex
N. Paunkovic, M. Lemus, P. Yadav, P. Mateus, A. Souto, On minimal assumptions to obtain a universally composable quantum bit commitment, International Conference of Transparent Optical Network (ICTON), Angers, France, June, 2019 | BibTex
N. Paunkovic, MV Vojinovic, Gravity-matter entanglement in Regge quantum gravity, QM15 Conference, Vienna, Austria, Vol. 701, pp. 1 - 3, March, 2016,
| Abstract | Full text (PDF 166 KBs) | BibTex
A. Almeida, R. Loura Loura, P.S André, A. N. Pinto, P. Mateus, N. Paunkovic, Noise and Measurement Errors in a Practical Two-State Quantum Bit Commitment Protocol in Optical Fibers, Conf. on Quantum Cryptography - QCRYPT, Paris, France, Vol. 1, pp. 1 - 3, September, 2014,
| Abstract | BibTex
A. Almeida, R. Loura Loura, N. Paunkovic, N. A. Silva, N. J. Muga, P. Mateus, P.S André, A. N. Pinto, A brief review on quantum bit commitment, International Conf. on Applications of Optics and Photonics - AOP, Aveiro, Portugal, Vol. 1, pp. 1 - 8, May, 2014 | BibTex
Y. Omar, N. Paunkovic, S. Bose, V. Vedral, Quantum entanglement and particle statistics, International Conf. on Quantum Communication, Measurement and Computing - QCMC, Massachusetts, United States, Vol. -, pp. 33 - 33, July, 2003 | BibTex

1Non-refereed Publications

N. Paunkovic, Quantum cryptography providing privacy to common citizens, 2017

Projects

Closed Projects9

Acronym	Name	Funding Agency	Start date	Ending date
BlackHolePT	Black holes, holography and phase transitions	FCT	07-09-2020	06-09-2023
CV-Quantum	Improving Security and Capacity Using Continuous Variables Quantum Communications	IT/LA	01-02-2014	01-06-2016
P-Quantum	Practical Quantum Communications	IT/LA	01-09-2011	01-08-2013
QSec	Quantum Security	FCT/PTDC	01-11-2007	01-10-2009
QuanLog	Logic in Quantum Computation and Information	FCT/POCI	01-01-2005	01-12-2007
QuantumMining	Quantum Primitives for Privacy Preserving Data Mining	FCT	01-09-2018	28-02-2022
QuantumPrime	Generation of Prime Numbers Enabled by Quantum Technologies for Cryptographic Applications	FCT	01-02-2021	31-01-2024
QUESTS	QUANTUM ENABLED SECURITY AND PRIVACY IN VEHICULAR NETWORKS	FCT	01-02-2020	30-06-2022
QuRunner	Development of a quantum random number generator network server	IT	01-02-2020	31-07-2022

Other Scientific Achievements

16Miscellaneous

N. Paunkovic, Deviation from the geodesic motion due to the entanglement between gravity and matter. CeFEMA Physics Forum, IST, Lisbon, Portugal, 04 December 2018, Invited Talks, Invited Talk, 01-12-2018
N. Paunkovic, MV Vojinovic, Gauge protected entanglement between gravity and matter, N. Paunković and M. Vojinović, RQI-N – Relativistic Quantum Information North, Vienna, Austria, September 24-27, 2018, Tutorial, Poster, 01-09-2018 | Link
N. Paunkovic, MV Vojinovic, Quantum gates, timelike nonlocality and causality in quantum gravity, N. Paunković and M. Vojinović, RQI-N – Relativistic Quantum Information North, Vienna, Austria, September 24 - 27, 2018, Tutorial, Poster, 01-09-2018 | Link
N. Paunkovic, MV Vojinovic, The effects of entanglement between gravity and matter on the motion of localized massive particles, F. Pipa, N. Paunković and M. Vojinović, RQI-N – Relativistic Quantum Information North, Vienna, Austria, September 24-27, 2018, Tutorial, Poster, 01-09-2018 | Link
N. Paunkovic, Information geometry of the space of quantum states and phase transitions. Belgrade school of quantum mechanics workshop, Faculty of physics, University of Belgrade, Belgrade, Serbia, 22 March 2018, Invited Talks, Invited Talk, 01-03-2018
N. Paunkovic, Symmetry protected entanglement between gravity and matter. Quantum Physics and Gravity, Erwin Schroedinger International Institute for Mathematics and Physics, Vienna, Austria, 21 June 2017, Invited Talks, Invited Talk, 01-06-2017 | Link
N. Paunkovic, Quantum Information Theory and Asymptotics of Quantum Contract Signing, PhD Thesis Jury, PhD thesis defence of Hana Louka, Faculty of Mathematics, University of Belgrade, 20 October 2016, 01-10-2016
N. Paunkovic, MV Vojinovic, Gravity-Matter Entanglement in Regge Quantum Gravity. EmQM15 – Emergent Quantum Mechanics symposium, Vienna, Austria, October 23-25, 2015., Tutorial, Poster, 01-10-2015 | Link
N. Paunkovic, Quantum information and many-body physics. CFIF Mini–Workshop on Theoretical Condensed Matter Physics, IST, 12 November, 2013, Lisbon, Portugal, Invited Talks, Talk, 01-11-2013
N. Paunkovic, Quantum Commitments Based on Complementarity - Contract Signing. IT Workshop on Quantum Telecommunications, 15 – 17 May 2013, Lisbon, Portugal, Invited Talks, Talk, 01-05-2013
N. Paunkovic, Fidelity spectrum and characterization of different phases of quantum systems. Correlations and coherence in quantum systems, 8-12 October 2012, Évora, Portugal, Invited Talks, Talk, 01-10-2012
N. Paunkovic, Fidelity, Fidelity Spectrum and Geometric Phases as Signatures of Phase Transitions. The third International Iran Conference on Quantum Information, 8-12 September 2012, Tehran, Iran, Invited Talks, Talk, 01-09-2012
N. Paunkovic, J. Bouda, P. Mateus, Quantum Commitments Based on Complementarity - Contract Signing. 9th Central European Quantum Information Processing Workshop 7-10 June 2012, Smolenice, Slovakia, Tutorial, Poster Session, 01-06-2012
N. Paunkovic, Quantum Information and Phase Transitions in Many-Body Systems. Workshop on the dynamics and asymptotics in the Dicke model and quantum networks, 3-7 May 2012, Mátraháza, Hungary, Invited Talks, Talk, 01-05-2012
N. Paunkovic, P.D. Sacramento, V. Vieira, Fidelity spectrum, quantum phases and their transitions. Quantum Malta 2012: Fundamental Problems in Quantum physics 24 - 27 April 2012, Malta, Tutorial, Poster Session, 01-04-2012
N. Paunkovic, V. Vieira, P.D. Sacramento, P. Nogueira, V. K. Dugaev, Quantum Information and Phase Transitions: Fidelity and State Distinguishability. 2009 Arnold Sommerfield Summer School "Condensed Matter Physica and Ultra cold Quantum Gases"., Tutorial, Poster Session, 01-10-2009

1Short Courses and Seminars

N. Paunkovic, Quantum Contract Signing, Faculty of Physics, University of Vienna, Austria, Vienna, 11-2009

Other Contributions

2Conference Committees

Correlations, criticality, and coherence in quantum system, Organizing Committee, 2014
Correlations, criticality, and coherence in quantum system, Organizing Committee, 2012

3Editorial Committees

Guest Editor, Applied Sciences (Switzerland), 29-09-2020 - 29-09-2021
Guest Editor, Symmetry, 10-02-2020 - 14-06-2021
Guest Editor, Entropy, 02-11-2019 - 24-06-2021

15Refereeing Journals

Entropy
2017, 1 review(s);
Optics Express
2016, 1 review(s);
Quantum Information Processing
2013, 1 review(s);
Intrnl. Journal of Theoretical Physics
2016, 1 review(s);
International Journal of Modern Physics B
2017, 1 review(s);
Optical and Quantum Electronics
2018, 1 review(s);
Indian Journal of Physics
2018, 1 review(s);
Condensed Matter
2018, 1 review(s);
Physical Review Letters
2005, 1 review(s);
Physical Review A - Atomic, Molecular, and Optical Physics
2005, 1 review(s);
Physical Review B - Condensed Matter and Materials Physics
2005, 1 review(s);
Physical Review E
2005, 1 review(s);
Journal of Physics A: Mathematical & General
2005, 1 review(s);
New Journal of Physics
2012, 1 review(s);
Europhysics Letters
2008, 1 review(s);

IT Member Profile

Nikola Paunkovic

Scientific Achievements

As Supervisor

As Co-supervisor

Closed Projects9