A How are quantum optical experiments designed? ;)

yucheng
Messages
232
Reaction score
57
TL;DR Summary
I hope to use experiments (and their theoretical analysis!) to inspire my studies!
inspiration:
  1. How does one predict the effects of small modifications (ordering of optical devices etc)? https://www.physicsforums.com/threa...m-et-al-1999-with-small-modification.1047803/
  2. In chapter 5 and 6 of A Guide to Experiments in Quantum Optics, the authors deal with the description of cavities, beam splitters and lasers.
  3. Optical experiments are very complicated: http://www.2physics.com/2014/03/quantum-up-conversion-of-squeezed.html
1672289662391.png


How are these experiments designed, analyzed? Some hints I've come across:
  • linear optical elements + Fourier Optics allow one to propagate beams and to know their modified characteristics; ABCD matrix analysis
  • Beam characteristics (modes etc) and propagation?
  • Matrix optics
  • Jones calculus
I'm sure it's crucial to know the contribution of each optical element (attenuation, transmission, reflection, refraction, polarizing etc) to the output power to select the right detector sensitivity and the right source.

Of course, then there's the more vigorous analysis on quantum aspects like quantum state tomography, ##g^{(2)}## correlation function, spectral analysis.... etc.

Do you have any examples of this sort of analysis/calculations being done? Do you know where to look for more references on designing and analyzing such experiments?Thanks in advance!P.S. I remember having seen 2 books:
Building electro-optical systems by Hobbs
A first course in laboratory optics by Gretarsson
 
Last edited:
Physics news on Phys.org
Plain laser light sources already exhibit quantum effects like interference, so many optical quantum experiments look quite like ordinary lab apparatus, eg [entanglement by polarizing beam splitter]. It is the electron experiments that often require complicated setup [Stern-Gerlach experiment], such as superconducting low temperature magnets, so those are much harder to do without big budgets.
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
I am reading WHAT IS A QUANTUM FIELD THEORY?" A First Introduction for Mathematicians. The author states (2.4 Finite versus Continuous Models) that the use of continuity causes the infinities in QFT: 'Mathematicians are trained to think of physical space as R3. But our continuous model of physical space as R3 is of course an idealization, both at the scale of the very large and at the scale of the very small. This idealization has proved to be very powerful, but in the case of Quantum...
Thread 'Lesser Green's function'
The lesser Green's function is defined as: $$G^{<}(t,t')=i\langle C_{\nu}^{\dagger}(t')C_{\nu}(t)\rangle=i\bra{n}C_{\nu}^{\dagger}(t')C_{\nu}(t)\ket{n}$$ where ##\ket{n}## is the many particle ground state. $$G^{<}(t,t')=i\bra{n}e^{iHt'}C_{\nu}^{\dagger}(0)e^{-iHt'}e^{iHt}C_{\nu}(0)e^{-iHt}\ket{n}$$ First consider the case t <t' Define, $$\ket{\alpha}=e^{-iH(t'-t)}C_{\nu}(0)e^{-iHt}\ket{n}$$ $$\ket{\beta}=C_{\nu}(0)e^{-iHt'}\ket{n}$$ $$G^{<}(t,t')=i\bra{\beta}\ket{\alpha}$$ ##\ket{\alpha}##...
Back
Top