39 citations · 55 across the 4 of their papers we have counts for
7 papers · 1 filter
High-Purity Pulsed Squeezing Generation with Integrated Photonics
Chaohan Cui, Christos N. Gagatsos, Saikat Guha +1
Squeezed light has evolved into a powerful tool for quantum technology, ranging from quantum enhanced sensing and quantum state engineering based on partial post-selection techniqu…
Quantum-Enhanced Fiber-Optic Gyroscopes Using Quadrature Squeezing and Continuous Variable Entanglement
Michael R Grace, Christos N. Gagatsos, Quntao Zhuang +1
We analyze a fiber-optic gyroscope design enhanced by the injection of quantum-optical squeezed vacuum into a fiber-based Sagnac interferometer. In the presence of fiber loss, we c…
Covert Capacity of Bosonic Channels
Christos N. Gagatsos, Michael S. Bullock, Boulat A. Bash
We investigate the quantum-secure covert-communication capabilities of lossy thermal-noise bosonic channels, the quantum-mechanical model for many practical channels. We determine…
Efficient representation of Gaussian states for multi-mode non-Gaussian quantum state engineering via subtraction of arbitrary number of photons
Christos Gagatsos, Saikat Guha
We introduce a complete description of a multi-mode bosonic quantum state in the coherent-state basis (which in this work is denoted as "" function ), which---up to a phase---is…
Quantum enhanced estimation of diffusion
Dominic Branford, Christos N. Gagatsos, Jai Grover +2
Momentum diffusion is a possible mechanism for driving macroscopic quantum systems towards classical behaviour. Experimental tests of this hypothesis rely on a precise estimation o…
Covert sensing using floodlight illumination
Christos N. Gagatsos, Boulat A. Bash, Animesh Datta +2
We propose a scheme for covert active sensing using floodlight illumination from a THz-bandwidth amplified spontaneous emission (ASE) source and heterodyne detection. We evaluate t…