Quantum-Classical Analogies

It is unanimously accepted that the quantum and the classical descriptions of the physical reality are very different, although any quantum process is "mysteriously" transformed through measurement into an observable classical event. Beyond the conceptual differences, quantum and classical physics have a lot in common. And, more important, there are classical and quantum phenomena that are similar although they occur in completely different contexts. For example, the Schrödinger equation has the same mathematical form as the Helmholtz equation, there is an uncertainty relation in optics very similar to that in quantum mechanics, and so on; the list of examples is very long. Quantum-classical analogies have been used in recent years to study many quantum laws or phenomena at the macroscopic scale, to design and simulate mesoscopic devices at the macroscopic scale, to implement quantum computer algorithms with classical means, etc. On the other hand, the new forms of light – localized light, frozen light – seem to have more in common with solid state physics than with classical optics. So these analogies are a valuable tool in the quest to understand quantum phenomena and in the search for new (quantum or classical) applications, especially in the area of quantum devices and computing.

• Nanodevices
• Quantum optics
• algorithms
• electromagnetic wave
• mechanics
• quantum computer
• quantum computing
• quantum mechanics
• quantum system

From the reviews:

"The main role of quantum classical analogies presented in ten distinct chapters is to shed some light on the genuine significance of the quantum and classical worlds. … The book addresses a large category of readers, especially graduates and PhD students … . The book is also useful for researchers working in advanced topics … . It can be used as an additional source for a course on quantum mechanics … . The hard cover book is nicely edited … ." (Roland Carchon, Physicalia, Vol. 57 (3), 2005)

"The authors … devote their new book to the striking analogies between classical and quantum physics. … the authors wish to show that the classical and quantum worlds share many common concepts despite striking differences. … The wealth of analogies … discovered and presented in ten distinct chapters sheds some light on the genuine significance of both the quantum world and its classical counterpart. The book addresses students and researchers alike specialising in the study of quantum devices, atom optics or quantum optics." (Gert Roepstorff, Zentralblatt MATH, Vol. 1093 (19), 2006)

"Analogies are a powerful cognitive tool that allow us to make inferences and learn new aspects from the comparison of two things by highlighting their similarities. … It is important to mention that the book is intended to be a catalogue of phenomena shared between classical and quantum physics … . the references given are an invaluable asset. … This book is therefore a very good choice for those interested in bridging ideas from classical physics into the quantum world or vice versa." (Dr. J. Rogel-Salazar, Contemporary Physics, Vol. 46 (6), 2005)

"This book develops and explores in a systematic manner a large number of analogs between quantum and classical theories. … It follows closely the recent experimental developments, and for each chapter there is a large number of current references. … Itwill be very valuable for a large category of readers ranging from graduate and Ph. D. students to researchers working in these areas, and on to teachers looking for nontrivial modern applications and developments in both quantum and classical physics." (Vitor R. Vieira, Mathematical Reviews, Issue 2007 c)

• Physics Faculty, University of Bucharest, Bucharest, Romania

  Daniela Dragoman

• National Research and Development Institute in Microtechnology, Bucharest, Romania

  Mircea Dragoman

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