QLunch - Weekly group meeting

QLunch meeting is typically held on Friday at 13:00 in Room DEI/D. Changes will be announced by emails

For proposing a talk for the QLunch weekly meeting, please send an email to qfuture[dot]unipd[at]gmail[dot]com, including: proposed date, talk title and some references on the topic.


Date Speaker Topic
Feb 17, 2017 F. Vedovato Quantum Data Locking and Quantum Enigma Machines, based on

Past QLunches

Date Speaker Topic
Feb 3, 2017 M. Schiavon Synchronization of Distant Optical Clocks at the Femtosecond Level, Phys. Rev. X 6, 021016 (2016)
Jan 27, 2017 G. Vallone
D. Marangon
P. Villoresi
Source-device-independent Ultra-fast Quantum Random Number Generation, [arXiv:1509.07390]
Jan 20, 2017 P. Villoresi A Cosmic Bell Test with Measurement Settings from Astronomical Sources, [arXiv:1611.06985]
Dic 2, 2016 M. Pittaluga Violation of a tripartite Bell inequality by weak measurements, [arXiv:1611.02430]
Oct 28, 2016 N. Laurenti Quantum Retrieval Games and Quantum Tokens, from Phys. Rev. A 93, 062311 (2016) and PNAS 109, 16079 (2012)
Oct 14, 2016 G. Vallone CV-MDI Quantum Key Distribution via Satellite, [arXiv:1605.05445]
Oct 21, 2016 S. Ceccato Key Management for GNSS services
Oct 7, 2016 M. Tomasin Experiments with hyperentangled states
Sept 30, 2016 S. Sturaro Authentication and integrity protection of EGNOS and the possible use of post-quantum digital signatures. EGNOS is the European satellite based augmentation system for positioning.
Sept 2, 2016 G. Caparra A Novel Navigation Message Authentication Scheme for GNSS Open Service
July 29, 2016 L. Calderaro W. Stacey, R. Annabestani, X. Ma, and N. Lütkenhaus, Security of quantum key distribution using a simplified trusted relay, Phys. Rev. A 91, 012338 (2015).
July 22, 2016 M. Tomasin N. Zhao, X. Li, G. Li, J. M. Kahn, Capacity limits of spatially multiplexed free-space communication, Nature Photonics 9, 822 (2015).
July 15, 2016 F. Vedovato Selected talks from the recent Relativistic Quantum Information North (RQI-N) Conference
July 8, 2016 D. Marangon QKD without monitoring signal disturbance. Based on:
  1. T. Sasaki, Y. Yamamoto, M. Koashi, Practical quantum key distribution protocol without monitoring signal disturbance, Nature 509, 475 (2014)
  2. H. Takesue, T. Sasaki, K. Tamaki, M. Koashi, Experimental quantum key distribution without monitoring signal disturbance, Nature Photonics 9, 827 (2015).
July 1, 2016 D. Dequal Quantum zeno effect on ultracold atoms. Based on: Y. S. Patil, S. Chakram, and M. Vengalattore, Measurement-Induced Localization of an Ultracold Lattice Gas, Phys. Rev. Lett. 115, 140402 (2015).
June 24, 2016 G. Cariolaro A new approach to Bloch Messiah reduction. Based on: Gianfranco Cariolaro and Gianfranco Pierobon, Reexamination of Bloch-Messiah reduction, Phys. Rev. A 93, 062115 (2016).
June 17, 2016 M. Schiavon Discusson on passive Decoy state QKD. Based on:
  1. Tight finite-key analysis for passive decoy-state quantum key distribution under general attacks, C. Zhou et al., Phys. Rev. A 89, 052328 (2014)
  2. Experimental passive decoy-state quantum key distribution, Q.-C. Sun et al., Laser Phys. Lett. 11, 085202 (2014)
June 10, 2016 A. Stanco Discusson on modified BB84 protocols. Based on:
  1. "Quantum Cryptography without Public Announcement of Bases", Hwang et al., Phys.Lett. A 244, 489 (1998), [arXiv:9702009]
  2. "A Modified Quantum Key Distribution Without Public Announcement Bases Against Photon-Number-Splitting Attack", Song Lin, Xiao-Fen Liu, Int. J. Th. Phys. 51, 2514 (2012)
  3. "A Modified Secure Scheme of Quantum Key Distribution Without Public Announcement Bases", Es-Said Chanigui and Abdelmalek Azizi, Journal of Computer Science
May 20, 2016 N. Laurenti e M. Schiavon Discusson on the composable security of QKD
  1. R. Canetti, "Universally composable security: a new paradigm for cryptographic protocols," in IEEE International Conference on Cluster Computing, SFCS, 136-145 (2001).
  2. J. Müller-Quade and R. Renner, "Composability in quantum cryptography," New Journal of Physics 11, 085006 (2009).
  3. U. M. Maurer and R. Renner, "Abstract Cryptography," in Symposium in Innovations in Computer Science, ICS, 1-21 (2011).
  4. C. Portmann and R. Renner, "Cryptographic security of quantum key distribution," [arXiv.org:1409.3525].
May 13, 2016 F. Ticozzi Fast mixing with quantum walks vs. classical lifts
Apr 29, 2016 R. Corvaja Bing Qi, et al., Generating the Local Oscillator "Locally" in Continuous-Variable Quantum Key Distribution Based on Coherent Detection, Phys. Rev. X 5, 041009 (2015)
Apr 22, 2016 G. Vallone Selected talks from the recent "Quantum Technologies", SPIE conference
Apr 8, 2016 D. Dequal Overview of recent results in quantum information based on CubeSat spacecraft. Based on
Apr 1, 2016 Video of N. Gisin "Quantum Cryptography: where do we stand?", Contributed Talk 12 at 5th International Conference on Quantum Cryptography (QCrypt 2015), Tokyo.
Mar 25, 2016 Video of M. Thompson "Integrated Photonic Technologies for Quantum Communications", Contributed Talk 12 at 5th International Conference on Quantum Cryptography (QCrypt 2015), Tokyo.
Mar 17, 2016 Silvia Sturaro, Nicola Laurenti Insecurity of TESLA based Navigation Message Authentication
Feb 26, 2016 Davide Marangon R. J. Donaldson, et al.,", Experimental demonstration of kilometer-range quantum digital signatures, Phys. Rev. A 93, 012329 (2016).
Feb 19, 2016 Francesco Campaioli Atmospheric effects on the propagation of Orbital Angular Momentum of light
Feb 12, 2016 Davide Marangon Novel QRNG that exploit images generated by single-photon cameras.
Gen 22, 2016 Francesco Vedovato, Luca Calderaro, Matteo Schiavon Report on the recent CISAS Workshop on satellite technologies.
Gen 15, 2016 Daniele Dequal Xiao-Ye Xu, et al., Phase Estimation with Weak Measurement Using a White Light Source, Phys. Rev. Lett. 111, 033604 (2013)
Gen 8, 2016 Paolo Villoresi Discussion on the opportunities of Cube-Sat
Dic 18, 2015 Nicolino Logullo Simulation of open quantum system exploiting the OAM degree of freedom of photons
Dic 3, 2015 Matteo Schiavon Loophole-free Bell experiments. Based on the following papers:
  • B. Hensen et al., Experimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km, Nature 526, 682 (2015)
  • Lynden K. Shalm et al., A strong loophole-free test of local realism, [arXiv:1511.03189]
  • Marissa Giustina et al., A significant-loophole-free test of Bell's theorem with entangled photons, [arXiv:1511.03190]
  • Adam Bednorz et al., Signaling loophole in experimental Bell tests, [arXiv:1511.03509]
Nov 27, 2015 Chiara Macchiavello Discussion on collaboration topics
Nov 20, 2015 Marco Tomasin C. Schwemmer, et al., Systematic Errors in Current Quantum State Tomography Tools, Phys. Rev. Lett. 114, 080403 (2015)
Nov 6, 2015 Francesco Vedovato Anne Broadbent, Christian Schaffer, Quantum Cryptography Beyond Quantum Key Distribution, [arXiv:1510.06120]
Oct 21, 2015 Simone Gaiarin Extending transmission capacity of optical fibers
Oct 16, 2015 Giacomo Pantaleoni Testing gravitational effects on quantum interference
Oct 9, 2015 Marco Avesani Semi-device-independent quantum protocols
Sept 4, 2015 Daniele Dequal News from the first National Workshop on: "Le Tecnologie Nazionali per mini e micro satelliti: Idee, Progetti e Prospettive", CIRA, Capua (CE)
July 3, 2015 Nicola Laurenti Gianluca Caparra Authentication and integrity protection of the Galileo signal
June 26, 2015 Marco Tomasin QKD system simulating a ground-satellite link [arXiv:1505.00292]
June 5, 2015 Roberto Corvaja Davide G. Marangon Optical communication with lunar and interplanetary terminals
May 29, 2015 Pino Vallone News from the QuPoN 2015 conference
March 27, 2015 Alberto Peruzzo Recent developments on quantum photonic integration at the University of Sidney
March 13, 2015 Giovanni Mazzarella The physics of ultracold atoms: the Bose-Hubbard model (part II)
March 6, 2015 Luca Salasnich The physics of ultracold atoms: the Bose-Hubbard model (part I)
Feb 6, 2015 Nicola Laurenti, The Sender-Excited Secret Key Agreement Model, based on the following papers:
Jan 23, 2015 Marangon, Laurenti, Vallone, Villoresi, Activities of the QuantumFuture group: meeting with students
Oct 31, 2014 Matteo Schiavon Heralded single photon source for quantum key distribution
Oct 24, 2014 Davide Marangon New approaches to Quantum Random Number Generators. Based on:
  • T. Lunghi, J.B. Brask, C. Lim, Q. Lavigne, J. Bowles, A. Martin, H. Zbinden, N. Brunner, A self-testing quantum random number generator, [arXiv:1410.2790]
  • G. Cañas, J. Cariñe, E. S. Gómez, J. F. Barra, A. Cabello, G. B. Xavier, G. Lima, M. Pawłowski, Experimental quantum randomness extraction invulnerable to detection loophole attacks, [arXiv:1410.3443]
Oct 17, 2014 Andrea Stanco Risultati e prospettive di completamento del progetto uQuake: system for QUAntum exchange of cryptographic KEy
Jul 4, 2014 Davide Bacco Peng Shi, Shi-Cheng Zhao, Wen-Dong Li, Yong-Jian Gu, Feasibility of underwater free space quantum key distribution[arXiv:1402.4666]
Jun 27, 2014 Daniele Dequal J. Dressel, M. Malik, F. M. Miatto, A. N. Jordan, R. W. Boyd, Colloquium: Understanding quantum weak values: Basics and applicationsReviews of Modern Physics 6, 307-316 (2014)

O. Hosten, P. Kwiat, Observation of the Spin Hall Effect of Light via Weak MeasurementsScience 319, 787-790 (2008)

Jun. 6, 2014 Pino Vallone

H. Salih, Z. Li, M. Al-Amri, and M. Suhail Zubairy, Protocol for Direct Counterfactual Quantum Communication Phys. Rev. Lett. 110, 170502 (2013)

N. Gisin, Optical Communication without Photons, Physical Review A 88 (2013)

May 23, 2014 Paolo Villoresi G. Vallone, D. Marangon, M. Canale, I. Savorgnan, D. Bacco, M. Barbieri, S. Calimani, C. Barbieri, N. Laurenti, P. Villoresi, Turbulence as a Resource for Quantum Key Distribution in Long Distance Free-Space Links[arXiv:1404.1272]
May 16, 2014 Nicola Laurenti B. Fröhlich, J. F. Dynes, M. Lucamarini, A. W. Sharpe, Z. Yuan, A. J. Shields, A quantum access network, Nature 501, 69-72 (2013)
May 9, 2014 Marco Tomasin F. Bussieres, et al., Quantum teleportation from a telecom-wavelength photon to a solid-state quantum memory,[arXiv:1401.6958]
Apr. 4, 2014 Paola Cappellaro Quantum sensing
Mar. 28, 2014 Nicola Dalla Pozza

T. Lunghi, J. Kaniewski, F. Bussières, R. Houlmann, M. Tomamichel, A. Kent, N. Gisin, S. Wehner, and H. Zbinden, Experimental Bit Commitment Based on Quantum Communication and Special Relativity, Phys. Rev. Lett. 111, 180504 (2013)

Mar. 21, 2014 Pino Vallone

C.C.W. Lim, C. Portmann, M. Tomamichel, R. Renner, N. Gisin, Device-Independent Quantum Key Distribution with Local Bell Test, Phys. Rev. X 3, 031006 (2013)

Mar. 7, 2014 Daniele Dequal

Two-way QKD protocol, [arXiv:9611042] [arXiv:9905056] [arXiv:0203118]
and possible attacks [arXiv:0507063]

Feb. 28, 2014 Davide Bacco

Jordan S. Cotler, Peter W. Shor, A New Relativistic Orthogonal States Quantum Key Distribution Protocol, [arXiv:1401.5493]

Jan. 24, 2014 Simone Gaiarin

strumenti software: sistema di controllo di gestione GIT.

Sito ufficiale e documentazione

Verranno presentate le seguenti slides (altre slides con contenuto più esteso qui)

Jan. 17, 2014 Davide Marangon

S. Pironio et al., Random numbers certified by Bell's theorem, Nature 464, 1021 (2010)

R. Colbeck and R. Renner, Free randomness can be amplified, Nature 8, 450 (2012)

Dec. 13, 2013 Massimo Melucci

Information Retrieval and Quantum Mechanics.

In this seminar we will analyze how Quantum Mechanics (QM) can be useful for Information Retrieval (IR). We will review some features of IR and then connect it with QM. Finally we will show some results demonstrating that QM id useful for IR.

Nov. 29, 2013 Anna Sponselli

Optical beam with Orbital Angular Momentum (OAM)

Nov. 22, 2013  

Jane Nordholt,

Satellite-based quantum communications

Nov. 8, 2013  

Fabian Furrer,

Continuous variable entropic uncertainty relations in the presence of quantum memory

June 21, 2013 Davide Marangon

Physical key-protected one-time pad,


June 12, 2013 Matteo Canale

Debate on the security of QKD. Based on the following papers:

May 24, 2013 Daniele Dequal

Neutrino detection in ICARUS experiment,

May 17, 2013 Marco Tomasin

Efficient Measurement of Quantum Dynamics via Compressive Sensing,

Phys. Rev. Lett. 106, 100401 (2011)

Experimental Quantum State Tomography via Compressed Sampling,

Phys. Rev. Lett. 108, 170403 (2012)

May 10, 2013 Pino Vallone

EPR-steering with nonmaximally entangled states,

Phys. Rev. A 87, 020101(R) (2013)

May 3, 2013 Roberto Corvaja

Comparison of error probability bounds in quantum state discrimination,

Phys. Rev. A, in press

Apr. 19, 2013 Francesco Ticozzi

Minimum Relative Entropy for Quantum Estimation: Feasibility and General Solution,


Apr. 12, 2013 Nicola Dalla Pozza

Undoing a Quantum Measurement

Phys. Rev. Lett. 110, 070403 (2013)

Apr. 5, 2013 Nicola Laurenti

Secrecy capacities of compound quantum wiretap channels and applications


Boche, H. et al., 2013. Secrecy capacities of compound quantum wiretap channels and applications, [arXiv:1302.3412]

Cai, M., Cai, N. & Deppe, C., 2012. Capacities of classical compound quantum wiretap and classical quantum compound wiretap channels, [arXiv:1202.0773]

Devetak, I., 2005. The Private Classical Capacity and Quantum Capacity of a Quantum Channel, IEEE Transactions on Information Theory, 51(1), pp.44-55.

Hayashi, M., 2012. Quantum wiretap channel with non-uniform random number and its exponent of leaked information, in 2012 IEEE International Symposium on Information Theory Proceedings, pp. 895-899

Watanabe, S., 2012. Private and quantum capacities of more capable and less noisy quantum channels, Physical Review A, 85, 012326

Mar. 22, 2013 Prof. Audun Jøsang

Subjective logic as an algebra for Dirichlet pdfs.

Mar. 15, 2013 Luca Mazzarella

Boson Sampling

Boson sampling: Science 339, 794 (2013).
Boson sampling: Science 339, 798 (2013).
See also "Universal Computation by Multiparticle Quantum Walk", Science 339, 791 (2013).

Mar. 8, 2013 Davide Bacco

A comprehensive design and performance analysis of low Earth orbit satellite quantum communication

New. Jour. Phys. 15, 023006 (2013), [arXiv:1211.2733]
Mar. 1, 2013 Pino Vallone

No-Switching Quantum Key Distribution Using Broadband Modulated Coherent Light

Theory: Phys. Rev. Lett. 93, 170504 (2004).
Exp: Phys. Rev. Lett. 95, 180503 (2005).
More detalis: Phys. Rev. A 73, 022316 (2006).
Feb. 22, 2013 Paolo Villoresi Review of possible experiments along space quantum channels
Feb. 15, 2013 - Meeting with an entrepreneur with interest in advanced technology
Feb. 1, 2013 Paolo Villoresi Discussion on the Asiago Winter School program and perspective
Jan. 25, 2013 Pino Vallone QKD wth distributed phase reference
Jan. 18, 2013 Davide Bacco QKD along Space channel in Matera
Jan. 11, 2013 Nicola Dalla Pozza Deterministic Protocol for the preparation of Single-Rail Qubit
Dec. 14, 2012 Alberto DAll'Arche QKD with non maximally entangled states
Dec. 7, 2012 - General discussion
Nov. 30, 2012 Davide Marangon High speed random number generation with quantum processes
Nov. 23, 2012 Matteo Canale Post-processing algorithms and tools for experimental quantum key distribution based on finite-key analysis
Nov. 16, 2012 Simone Piccirilli The Ventrix quantum receiver
Nov. 9, 2012 Maria Silvia Pini Preferences in Multi-agent Decision Making
Oct. 26, 2012 Nicola Laurenti States and optimal measurement operators for classical binary transmission over qubit channels
Oct. 19, 2012 Luca Mazzarella Asymmetric Architecture for Heralded Single Photon Sources
Oct. 12, 2012 Mattia Minozzi Biphoton generation with adaptive wavefront
Oct. 5, 2012 Matteo Canale Beyond BB84, a novel approach