G. S. Agarwal

Balanced homodyne detection with on-off detector systems: Observable nonclassicality criteria

2015 · Europhysics Letters (EPL)

Driven by single photon detection requirements, the theory of arrays of off-on detectors has been developed and applied. However, for a comprehensive characterization of nonclassicality, one also needs phase sensitive properties. This missing link is …

Quantum signatures of collective behavior of a coherently driven two atom system coupled to a single-mode of the electromagnetic field

2016 · arXiv (Cornell University)

We present a study of the quantum statistical properties of light emitted by two coherently driven atoms coupled to a single-mode cavity, an ideal setup to precisely investigate various aspects of collective behavior over a …

Detector-Independent Verification of Quantum Light

2017 · Physical Review Letters

We introduce a method for the verification of nonclassical light which is independent of the complex interaction between the generated light and the material of the detectors. This is accomplished by means of a multiplexing …

Simultaneous Excitation of Two Noninteracting Atoms with Time-Frequency Correlated Photon Pairs in a Superconducting Circuit

2020 · Physical Review Letters

We report the first observation of simultaneous excitation of two noninteracting atoms by a pair of time-frequency correlated photons in a superconducting circuit. The strong coupling regime of this process enables the synthesis of a …

Quantifying quantum-amplified metrology via Fisher information

2022 · Physical Review Research

We present a unified framework, based on quantum metrology concepts, for defining and quantifying deterministic noiseless quantum amplification of parameter-dependent processes, which plays an important role in increasing the precision of quantum sensing. Recent experiments …