IQC Special seminar featuring Juan Pablo Paz

Monday, October 6, 2025 2:00 pm - 3:00 pm EDT (GMT -04:00)

Preparation and properties of squeezed quantum multiplets

Juan Pablo Paz | University of Buenos Aires, Argentina and Buenos Aires Institute for Physics (IFIBA, UBA-CONICET)

I will discuss the properties of squeezed quantum multiplets, formed by superpositions of D squeezed states equally spaced in the angular variable of quadrature space. These states can be used to represent a qubit which is such that the loss of up to (D-1) photons can be detected by simple super-parity measurements.

I will discuss high fidelity preparation methods for these states, focusing on superconducting circuits and trapped ions where these methods seem to be implementable with current technology. I will discuss the phase space representation of squeezed multiplets—showing how the Wigner function can be computed in terms of simple exponential and trigonometric functions.

Finally, I will compare some of the properties of squeezed multiplets with the so-called p-squeezed states (which include tri-squeezed, quad-squeezed and other similar multi-photon states.

Location

QNC 1201