Resource theory of quantum non-Gaussianity and Wigner negativity

F Albarelli, MG Genoni, MGA Paris, A Ferraro - Physical Review A, 2018 - APS
We develop a resource theory for continuous-variable systems grounded on operations
routinely available within current quantum technologies. In particular, the set of free …

Hybrid entanglement distribution between remote microwave quantum computers empowered by machine learning

B Zhang, J Wu, L Fan, Q Zhuang - Physical Review Applied, 2022 - APS
Superconducting microwave circuits with Josephson junctions, the major platform for
quantum computing, can only reach the full capability when connected. This requires an …

Gaussian quantum adaptation of non-Gaussian states for a lossy channel

R Filip - Physical Review A—Atomic, Molecular, and Optical …, 2013 - APS
The Gaussian quantum adaptation deterministically protecting a negativity of a Wigner
function of a non-Gaussian quantum state transmitted through a lossy channel is proposed …

Improving noiseless linear amplification for optical quantum communication with quadrature squeezing

S Yang, SL Zhang, XB Zou, SW Bi, XL Lin - Physical Review A—Atomic …, 2013 - APS
Quantum noiseless linear amplification (NLA) is an important tool for long-distance optical
quantum communication. In this paper, we show that NLA with linear optics and photon …

Statistical properties of non-Gaussian quantum states generated via thermal state truncation

L Wang, JS Wang, XY Zhang, XG Meng… - Physica A: Statistical …, 2022 - Elsevier
Quantum scissors devices proposed by Pegg are beneficial to obtain highly nonclassical
quantum states and indispensable for meeting the requirements of quantum information and …

[HTML][HTML] Preparation of nonclassical states by displacement-based quantum scissors

C Liu, M Yu, W Ye, H Zhang, L Hu - Results in Physics, 2020 - Elsevier
We theoretically study the statistical properties of non-Gaussian states generated by
inputting coherent state, single-mode squeezed vacuum state and thermal state to the …

Displacement-enhanced entanglement distillation of single-mode-squeezed entangled states

A Tipsmark, JS Neergaard-Nielsen, UL Andersen - Optics Express, 2013 - opg.optica.org
It has been shown that entanglement distillation of Gaussian entangled states by means of
local photon subtraction can be improved by local Gaussian transformations. Here we show …

Two-mode light states before and after delocalized single-photon addition

B Lan, H Yuan, X Xu - Physical Review A, 2022 - APS
We studied the effect of delocalized single-photon addition (DPA a ̂ 1†+ ei φ a ̂ 2†) on
two input modes containing four cases: two independent coherent states (CSs), two …

Purification of Gaussian States by Photon Subtraction

K Zhang, H Li, J Jing, N Treps… - arXiv preprint arXiv …, 2024 - arxiv.org
Photon subtraction can enhance entanglement, which for pure states induces a decrease in
the purity of reduced states. In contrast, by analyzing the purities of Gaussian states before …

Entangling remote microwave quantum computers with hybrid entanglement swap and variational distillation

B Zhang, J Wu, L Fan, Q Zhuang - arXiv preprint arXiv:2206.14682, 2022 - arxiv.org
Superconducting microwave circuits with Josephson junctions are a major platform for
quantum computing. To unleash their full capabilities, the cooperative operation of multiple …