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Lecture 10 Quantum Optics of Photons 1

Lecture 10 Quantum Optics of Photons 1. Reminder: Lecture notes taker Seminar Friday Next week lecture: Monday by Prof. Elliott (Chap5-6); Wednesday by David Blasing (Chap 9, light-atom) HWK3 due in 2 weeks, see online. Course Outline. Part 1: basic review: Optics+Quantum;

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Lecture 10 Quantum Optics of Photons 1

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  1. Lecture 10Quantum Optics of Photons 1 Reminder: Lecture notes taker Seminar Friday Next week lecture: Monday by Prof. Elliott (Chap5-6); Wednesday by David Blasing (Chap 9, light-atom) HWK3 due in 2 weeks, see online

  2. Course Outline Part 1: basic review: Optics+Quantum; Part 2: Basic Light-matter interaction; laser; Part 3: Quantum Optics of photons Part 4: More advanced light-matter interaction Part 5: Quantum information/photonics/ applications Subject to change; Check updates on course web/wiki

  3. Quantum Optics of Photons FQ’Chap5 FQ’Chap6 Chap 7-8: coherent, squeezed, & number states

  4. Photon Statistics FQ’Chap5 • Single photon detector: • PMT (photomultiplier tube) • APD (avalanche photodiode)

  5. How many photons (detected)?

  6. Coherent Light: Poisson Photon Statistics

  7. Classification of Light by Photon Statistics (Nonclassical light)

  8. Superpoissonian Light 1) Thermal Light (blackbody) Classical (Rayleigh-Jeans) Planck (quantum):

  9. (focus on one mode) Particle (Photon) “wave noise”

  10. (Superpoissonian) 2. “Chaotic” (partially coherent light) Measurement time T (smaller) vs. c

  11. Subpoissonian Light But: any (random) loss will randomize the photons (det. Subpoissonian challenging)

  12. (single photon) photodetector APD PMT

  13. Theory of Photodetection (semiclasical) If I(t)=I constant If I(t) fluctuating, superpoissonian

  14. Theory of Photodetection (quantum) But: any (random) loss will randomize the photons (det. Subpoissonian challenging) Key: high Q.E.

  15. Next Lecture (10): quantum optics of photons • FQ Chap 5.

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