99 citations · 490 across the 39 of their papers we have counts for
Showing 2019 · quant-phShow all
3 papers · 2 filters
quant-ph2019★ 7 cited
Non-producibility of arbitrary non-Gaussian states using zero-mean Gaussian states and partial photon number resolving detection
Christos N. Gagatsos, Saikat Guha
Gaussian states and measurements collectively are not powerful-enough resources for quantum computing, as any Gaussian dynamics can be simulated efficiently, classically. However,…
quant-ph2019★ 39 cited
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…
quant-ph2019★ 12 cited
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…