2024/12/26 by Devibala Esakkimuthu, Esakkimuthu, Devibala, Basherrudin Mahmud Ahmed A +1 · 1 citation
Computer Science · Decision Sciences · Engineering · #FOS: Physical sciences #Fault Detection and Control Systems #Quantum Physics (quant-ph) #Scientific Measurement and Uncertainty Evaluation #Sensor Technology and Measurement Systems
paper · pdf · doi:10.48550/arxiv.2412.19164
openalex publication_date 2024/12/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Conditional Measurement scheme which employs linear optical elements and photon detection is the fertile ground for nonclassical state generation. We consider a simple setup that requires a coherent state and a number state as inputs of the beam splitter, and a photon detector. We show that by tuning the parameters involved in the setup, we can achieve optimal squeezing from the setup. This is facilitated by writing the output state of the conditional measurement as displaced qudits. Setting aside displacement which plays no role in squeezing, the finite-dimensional representation makes it possible to calculate the maximal amount of squeezing. By fixing the detection at one photon level irrespective of any number state input and carefully chosen coherent parameter and beam splitter reflectivity values, one can reach the maximal squeezing at least for lower number state inputs. This is in contrast to the earlier attempts in atom field interaction models etc., where the squeezing obtained was far from saturation. To accommodate the experimental imperfections, we consider the impure nature of the photon source and detector inefficiency.