History and theory of quantum entanglement. Study of the experimental requirements for the measurement and manipulation of quantum entanglement. Hands-on experiments to measure quantum entanglement in the lab and redaction of a complete report. Perform additional experiments in quantum photonics with pairs of entangled photons: detection efficiency measurements, the Hanbury-Brown Twiss interferometer, the Hong Ou Mandel effect, Michelson interferometry with single photons.

Thorough understanding of the generation, manipulation and detection of quantum entanglement. Practical work in the lab to observe quantum entanglement and additional quantum effects (Hong Ou Mandel effect, Hanburry Brown Twiss interferometer, Quantum Eraser).

Quantum physics SK1102, SK1151

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Students at KTH with a permanent disability can get support during studies from Funka:

Funka - compensatory support for students with disabilities

• INL1 - Assignments, 1.0 credits, grading scale: G
• LAB2 - Laboratory work, 2.5 credits, grading scale: G
• SEM1 - Seminar, 1.5 credits, grading scale: G
• LAB1 - Laboratory work, 2.5 credits, grading scale: G

Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.

The examiner may apply another examination format when re-examining individual students.

If the course is discontinued, students may request to be examined during the following two academic years.

INL1 - Assignments, 1.0 credits

LAB2 - Laboratory work, 2.5 credits

SEM1 - Seminar, 1.5 credits

LAB1 - Laboratory work, 2.5 credits

• Oral presentation and discussion of one article for every student
• Thorough report on laboratory demonstration of quantum entanglement
• Extra experimental report: perform and report additional quantum measurement (Hong Ou Mandel, Hanburry Brown Twiss or Quantum Eraser)
• Hand in assignment on quantum entanglement measurement

• All members of a group are responsible for the group's work.
• In any assessment, every student shall honestly disclose any help received and sources used.
• In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.

Core lectures (Lectures 1–8). The first eight lectures are dedicated to the core material of the course and follow a structured progression, where each lecture builds on the previous one. The topics include the quantization of the electromagnetic field, quantum states of light, and the interaction between light and matter. The course then covers practical aspects of quantum photonics, including the generation of non-classical light, the guiding of quantum light in integrated photonic structures, and the mixing and interference of quantum optical modes. Methods for measuring and characterizing quantum light are also discussed. The final lecture introduces KTH's programmable quantum photonic circuit and connects the theoretical concepts of the course to a real experimental platform. Lecture material is posted on Canvas after each class meeting.

Student presentations (Lectures 9–13). The last five lectures are dedicated to student presentations and discussion of research papers in quantum photonics. Students work in groups, with two group presentations per lecture, each lasting approximately 45 minutes and based on one main topic. Each presentation addresses the physical principle, the theoretical model, the experimental implementation, the measured observables, and the broader significance and future directions.

Laboratory component. The course includes laboratory experiments in quantum integrated photonics, where students gain hands-on experience with modern photonic quantum systems and measurement methods. The experiments are performed on the KTH 12-mode programmable photonic processor.