The search for a usually stems from a student or researcher realizing that introductory physics texts don't quite bridge the gap between basic electromagnetism and true quantum optics. Rodney Loudon’s The Quantum Theory of Light is the gold standard for this transition.
Loudon takes a "gentle" but thorough approach, moving from well-understood classical ideas to advanced non-classical phenomena. Key sections often referenced include: loudon quantum theory of light pdf better
(2000) is widely considered the superior version for modern study. Compared to the 1973 and 1983 editions, the third edition was significantly overhauled, with over to account for experimental advances in quantum optics. Why the 3rd Edition is Better "Loudon Quantum Theory of Light PDF" The search
Within an hour of reading the correct chapter in the "better" PDF, Elena spotted her error. She had been treating the vacuum noise input incorrectly. The Loudon text explained that even if you don't inject light into the second port of a beamsplitter, the vacuum state entering that port still contributes quantum noise to the output. Key sections often referenced include: half of the
The "better" version you're likely looking for is the of Rodney Loudon's The Quantum Theory of Light .
The most recent and comprehensive version of Rodney Loudon's textbook is The Quantum Theory of Light, 3rd Edition