Here is another person with a similar problem.

I look liked this to a Russian lady in the audience when I gave a talk in Kazan (Russia 1999).

• I look like a particle physicist to optical physicists.

• I look like an optics man to particle physicists.

• Since there are more optics people in the audience, I should be a particle man to them, but I should speak the language of optics.

• As a particle physicist, I studied the Lorentz group. I studied enough to tell Wigner the stories he wanted to hear in his later years.

• While doing so, I found out the Lorentz group is also applicable to many branches of optics. My name is associated with squeezed states, because the squeezed state is a representation of the Lorentz group.

• Click here for Dirac's 1963 paper on two-photon states. I met Dirac twice (in 1962 and in 1978).