110 http://isa.epfl.ch/imoniteur_ISAP/ itffichecours.txt?path=EPFL.Etu.FicheCours.HeaderFR itffichecours.txt?path=EPFL.Etu.FicheCours.GlobalNav_js fr 2026 249847 6683147 249847 2840683608 2840683608 0 0 Informatique IN IC Faculté informatique et communications School of Computer and Communication Sciences !itffichecours.htm?ww_i_matiere=4486899408&ww_x_anneeAcad=2840683608&ww_i_section=249847&ww_i_niveau=6683147 1696552884 1696552963 2025-2026 COURSE BOOKLET COM-440 Introduction to quantum cryptography Introduction to quantum cryptography Lecturers Vidick Thomas Language of teaching English Cursus Computer Science - Cybersecurity(2025-2026, IN-CS - Master 2024)
Computer Science - Cybersecurity(2025-2026, IN-CS - Master 2025)
Computer Science(2025-2026, IN - Master 2024)
Computer Science(2025-2026, IN - Master 2025)
Cyber security minor(2025-2026, Information security minor 2025-26)
Data Science(2025-2026, SC_DS - Master 2024)
Data Science(2025-2026, SC_DS - Master 2025)
Quantum Science and Engineering(2025-2026, SIQ - 2024)
Quantum Science and Engineering(2025-2026, SIQ - 2025)
SemesterMand.OptionFilières
Hx
MA1, MA3x
MA1, MA3xD
MA1, MA3xM N
 Credits 6 Session Winter Workload 180h Exam Written Number of positions Semester Fall Weeks 14 Hours 4 weekly
Courses 3 weekly
Exercises 1 weekly
Study planSemesterMand.OptionFilières
Cyber security 2025-26MA1xD
Cyber security 2025-26MA3xD
Data Science 2025-26MA1x
Data Science 2025-26MA3x
Informatique 2025-26MA1xM N
Informatique 2025-26MA3xM N
Mineur : Cyber security 2025-26Hx
Science et ingénierie quantiques 2025-26MA1x
Science et ingénierie quantiques 2025-26MA3x
Cursus Sem. Type
Computer science MA1, MA3 Opt.
Cyber security minor H Opt.
Cybersecurity MA1, MA3 Opt.
Data Science MA1, MA3 Opt.
Quantum Science and Engineering MA1, MA3 Opt.
Remark This course is a « depth » for Cyber Security master program and Cyber Security minor Summary This course describes, at a rigorous mathematical level, a range of such tasks, each time identifying the fundamental property of quantum information that makes it possible, its strengths, and its limits. Content

It has been known since the 1980s that the use of quantum information could enable certain cryptographic tasks, such as quantum money or quantum key distribution, that are impossible classically without making computational assumptions.

  • Quantum money: Wiesner's scheme and attacks on it
  • The quantum one-time pad
  • Entanglement and non-local games
  • Quantum key distribution: the BB'84 protocol
  • Ekert's protocol and device independence
  • Two-party cryptography: bit commitment, oblivious transfer, coin-flipping
  • The noisy storage model
  • Quantum encryption
  • Delegated computation
 Learning Prerequisites Required courses
  • An introduction to quantum computation, such as CS-308 Introduction to quantum computation, COM-309 Introduction to quantum information processing or PHYS-541 Quantum computing
 Recommended courses
  • A course in cryptography such as COM-401 Cryptography and Security can help engage with the material, but is not required
 Important concepts to start the course
  • Basics of quantum computing, including qubits, density matrices, POVM, quantum gates and circuits
  • Discrete mathematics techniques in computer science, such as asymptotic estimates, Chernoff (concentration) bounds
  • Algorithmic reasoning

No prior knowledge of cryptography is required, but some familiarity with the principles of quantum information, as well as some background in algorithms or complexity, are highly recommanded.

 Learning Outcomes By the end of the course, the student must be able to:
  • Design , analyse and show security of cryptographic protocols that make use of quantum information to implement novel tasks with strong security guarantees
  • Assess / Evaluate the (theoretical) security of a quantum cryptographic scheme and investigate possible attacks on it
  • Learn or solidify your knowledge of quantum computing
 Teaching methods
  • Ex-cathedra
 Expected student activities
  • Attend lecture and participate orally
  • Perform the required reading and homeworks
 Assessment methods
  • Homeworks are a combination of small quizzes, problem sets to be solved in small group, and occasional critical reading exercises to be performed alone.
  • There will be a midterm and a final exam, which will be similar to problem sets but required to be solved alone.
 Supervision Office hours Yes Assistant.e.s Yes Resources Bibliography

Vidick and Wehner, Introduction to Quantum Cryptography, Cambridge University Press, 2023.

 Ressources en bibliothèque
  • Find the references at the Libraryhttps://slsp-epfl.primo.exlibrisgroup.com/discovery/search?query=course_code,contains,%22COM-440%202025-2026%22,AND&tab=41SLSP_EPF_MyInst_and_CI&search_scope=MyInst_and_CI&vid=41SLSP_EPF:prod&lang=fr&mode=advanced&offset=0
 Moodle Link Informatique, 2025-2026, Master semestre 1 Computer Science, 2025-2026, Master semester 1 Ecole polytechnique fédérale de Lausanne EPFL Ecole polytechnique fédérale de Lausanne EPFL 2025-2026 Master semestre 1 MA1 HIVER Master semester 1 MA1 Informatique IN Computer Science IN
Informatique IN Computer Science IN
M N optionnel optional
3 Cours Courses Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
1 Exercices Exercises Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
This course is a « depth » for Cyber Security master program and Cyber Security minor 4486899408 Introduction to quantum cryptography Introduction to quantum cryptography 6
Ecrit Written Crédit Credits 6 Session hiver Session winter HIV HIV
Informatique, 2025-2026, Master semestre 3 Computer Science, 2025-2026, Master semester 3 Ecole polytechnique fédérale de Lausanne EPFL Ecole polytechnique fédérale de Lausanne EPFL 2025-2026 Master semestre 3 MA3 HIVER Master semester 3 MA3 Informatique IN Computer Science IN
Informatique IN Computer Science IN
M N optionnel optional
3 Cours Courses Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
1 Exercices Exercises Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
This course is a « depth » for Cyber Security master program and Cyber Security minor 4486899408 Introduction to quantum cryptography Introduction to quantum cryptography 6
Ecrit Written Crédit Credits 6 Session hiver Session winter HIV HIV
Data Science, 2025-2026, Master semestre 1 Data Science, 2025-2026, Master semester 1 Ecole polytechnique fédérale de Lausanne EPFL Ecole polytechnique fédérale de Lausanne EPFL 2025-2026 Master semestre 1 MA1 HIVER Master semester 1 MA1 Data Science SC_DS Data Science SC_DS
Systèmes de communication SC Communication Systems SC
optionnel optional
3 Cours Courses Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
1 Exercices Exercises Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
This course is a « depth » for Cyber Security master program and Cyber Security minor 4486899408 Introduction to quantum cryptography Introduction to quantum cryptography 6
Ecrit Written Crédit Credits 6 Session hiver Session winter HIV HIV
Data Science, 2025-2026, Master semestre 3 Data Science, 2025-2026, Master semester 3 Ecole polytechnique fédérale de Lausanne EPFL Ecole polytechnique fédérale de Lausanne EPFL 2025-2026 Master semestre 3 MA3 HIVER Master semester 3 MA3 Data Science SC_DS Data Science SC_DS
Systèmes de communication SC Communication Systems SC
optionnel optional
3 Cours Courses Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
1 Exercices Exercises Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
This course is a « depth » for Cyber Security master program and Cyber Security minor 4486899408 Introduction to quantum cryptography Introduction to quantum cryptography 6
Ecrit Written Crédit Credits 6 Session hiver Session winter HIV HIV
Informatique - Cybersecurity, 2025-2026, Master semestre 1 Computer Science - Cybersecurity, 2025-2026, Master semester 1 Ecole polytechnique fédérale de Lausanne EPFL Ecole polytechnique fédérale de Lausanne EPFL 2025-2026 Master semestre 1 MA1 HIVER Master semester 1 MA1 Informatique - Cybersecurity IN_CS Computer Science - Cybersecurity IN_CS
Informatique IN Computer Science IN
D optionnel optional
3 Cours Courses Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
1 Exercices Exercises Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
This course is a « depth » for Cyber Security master program and Cyber Security minor 4486899408 Introduction to quantum cryptography Introduction to quantum cryptography 6
Ecrit Written Crédit Credits 6 Session hiver Session winter HIV HIV
Informatique - Cybersecurity, 2025-2026, Master semestre 3 Computer Science - Cybersecurity, 2025-2026, Master semester 3 Ecole polytechnique fédérale de Lausanne EPFL Ecole polytechnique fédérale de Lausanne EPFL 2025-2026 Master semestre 3 MA3 HIVER Master semester 3 MA3 Informatique - Cybersecurity IN_CS Computer Science - Cybersecurity IN_CS
Informatique IN Computer Science IN
D optionnel optional
3 Cours Courses Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
1 Exercices Exercises Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
This course is a « depth » for Cyber Security master program and Cyber Security minor 4486899408 Introduction to quantum cryptography Introduction to quantum cryptography 6
Ecrit Written Crédit Credits 6 Session hiver Session winter HIV HIV
Science et ingénierie quantiques, 2025-2026, Master semestre 1 Quantum Science and Engineering, 2025-2026, Master semester 1 Ecole polytechnique fédérale de Lausanne EPFL Ecole polytechnique fédérale de Lausanne EPFL 2025-2026 Master semestre 1 MA1 HIVER Master semester 1 MA1 Science et ingénierie quantiques SIQ Quantum Science and Engineering SIQ
Science et ingénierie quantiques SIQ Quantum Science and Engineering SIQ
optionnel optional
3 Cours Courses Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
1 Exercices Exercises Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
This course is a « depth » for Cyber Security master program and Cyber Security minor 4486899408 Introduction to quantum cryptography Introduction to quantum cryptography 6
Ecrit Written Crédit Credits 6 Session hiver Session winter HIV HIV
Science et ingénierie quantiques, 2025-2026, Master semestre 3 Quantum Science and Engineering, 2025-2026, Master semester 3 Ecole polytechnique fédérale de Lausanne EPFL Ecole polytechnique fédérale de Lausanne EPFL 2025-2026 Master semestre 3 MA3 HIVER Master semester 3 MA3 Science et ingénierie quantiques SIQ Quantum Science and Engineering SIQ
Science et ingénierie quantiques SIQ Quantum Science and Engineering SIQ
optionnel optional
3 Cours Courses Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
1 Exercices Exercises Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
This course is a « depth » for Cyber Security master program and Cyber Security minor 4486899408 Introduction to quantum cryptography Introduction to quantum cryptography 6
Ecrit Written Crédit Credits 6 Session hiver Session winter HIV HIV
Cyber security minor, 2025-2026, Semestre automne Cyber security minor, 2025-2026, Autumn semester Ecole polytechnique fédérale de Lausanne EPFL Ecole polytechnique fédérale de Lausanne EPFL 2025-2026 Semestre automne H HIVER Autumn semester H Cyber security minor MIN_IN_SEC Cyber security minor MIN_IN_SEC
optionnel optional
3 Cours Courses Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
1 Exercices Exercises Heure(s) hebdo x 14 semaines Hour(s) per week x 14 weeks H hebdo H hebdo Vidick Thomas Georges Pierre 368116
Informatique IN Computer Science IN
This course is a « depth » for Cyber Security master program and Cyber Security minor 4486899408 Introduction to quantum cryptography Introduction to quantum cryptography 6
Ecrit Written Crédit Credits 6 Session hiver Session winter HIV HIV
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FO_fin HTML_debut &#951; HTML_fin JS_debut \x26#951; JS_fin CODE72092805 BOOLEAN_Symbol BaliseJS_debut \x5bETA\x5d BaliseJS_fin Balise_debut [ETA] Balise_fin FO_debut [inline]=&#919; FO_fin HTML_debut &#919; HTML_fin JS_debut \x26#919; JS_fin BALISE_SOULIGNER BOOLEAN_Symbol BaliseJS_debut \x5bu\x5d BaliseJS_fin \x5b\x2fu\x5d Balise_debut [u] Balise_fin [/u] FO_debut text-decoration=underline FO_fin text-decoration=none HTML_debut <u> HTML_fin </u> JS_debut \x3cu\x3e JS_fin \x3c\x2fu\x3e CODE72092388 BOOLEAN_Symbol BaliseJS_debut \x5bpsi\x5d BaliseJS_fin Balise_debut [psi] Balise_fin FO_debut [inline]=&#968; FO_fin HTML_debut &#968; HTML_fin JS_debut \x26#968; JS_fin CODE72092541 BOOLEAN_Symbol BaliseJS_debut \x5bPSI\x5d BaliseJS_fin Balise_debut [PSI] Balise_fin FO_debut [inline]=&#936; FO_fin HTML_debut &#936; HTML_fin JS_debut \x26#936; JS_fin CODE140502511 BOOLEAN_Symbol 1 BaliseJS_debut \x5brho\x5d BaliseJS_fin Balise_debut [rho] Balise_fin FO_debut [inline]=&#961; FO_fin HTML_debut &#961; HTML_fin JS_debut \x26#961; JS_fin CODE140504636 BOOLEAN_Symbol 1 BaliseJS_debut \x5bRHO\x5d BaliseJS_fin Balise_debut [RHO] Balise_fin FO_debut [inline]=&#929; FO_fin HTML_debut &#929; HTML_fin JS_debut \x26#929; JS_fin CODE148292791 BOOLEAN_Symbol BaliseJS_debut \x5bepsilon\x5d BaliseJS_fin Balise_debut [epsilon] Balise_fin FO_debut [inline]=&#949; FO_fin HTML_debut &#949; HTML_fin JS_debut \x26#949; JS_fin CODE169976220 BOOLEAN_Symbol BaliseJS_debut \x5blig\x5d BaliseJS_fin Balise_debut [lig] Balise_fin FO_debut [inline]=&#x203A;&#160;&#160; FO_fin HTML_debut &#x203A;&#160;&#160; HTML_fin JS_debut \x26#x203A;\x26#160;\x26#160; JS_fin CODE148292899 BOOLEAN_Symbol BaliseJS_debut \x5bEPSILON\x5d BaliseJS_fin Balise_debut [EPSILON] Balise_fin FO_debut [inline]=&#917; FO_fin HTML_debut &#917; HTML_fin JS_debut \x26#917; JS_fin BALISETXT_SAUT BOOLEAN_Symbol BaliseJS_debut \x5bbr\x2f\x5d BaliseJS_fin Balise_debut [br/] Balise_fin FO_debut FO_fin HTML_debut <br/> HTML_fin JS_debut \x3cbr\x2f\x3e JS_fin 4486899408 Introduction to quantum cryptography Introduction to quantum cryptography anglais Vidick Thomas Georges Pierre 368116 249847