Quantifying non-Gaussianity for quantum information

MG Genoni, MGA Paris - Physical Review A—Atomic, Molecular, and Optical …, 2010 - APS
We address the quantification of non-Gaussianity (nG) of states and operations in
continuous-variable systems and its use in quantum information. We start by illustrating in …

Trusted noise in continuous-variable quantum key distribution: a threat and a defense

VC Usenko, R Filip - Entropy, 2016 - mdpi.com
We address the role of the phase-insensitive trusted preparation and detection noise in the
security of a continuous-variable quantum key distribution, considering the Gaussian …

Sub-shot-noise photon-number correlation in a mesoscopic twin beam of light

M Bondani, A Allevi, G Zambra, MGA Paris… - Physical Review A …, 2007 - APS
We demonstrate sub-shot-noise photon-number correlations in a (temporal) multimode
mesoscopic (∼ 10 3 detected photons) twin beam produced by picosecond-pulsed …

Laser-driven quantum magnonics and terahertz dynamics of the order parameter in antiferromagnets

D Bossini, S Dal Conte, G Cerullo, O Gomonay… - Physical Review B, 2019 - APS
The impulsive generation of two-magnon modes in antiferromagnets by femtosecond optical
pulses, so-called femto-nanomagnons, leads to coherent longitudinal oscillations of the …

Discriminating quantum-optical beam-splitter channels with number-diagonal signal states: Applications to quantum reading and target detection

R Nair - Physical Review A—Atomic, Molecular, and Optical …, 2011 - APS
We consider the problem of distinguishing, with minimum probability of error, two optical
beam-splitter channels with unequal complex-valued reflectivities using general quantum …

Round-robin differential-phase-shift quantum key distribution with heralded pair-coherent sources

L Wang, S Zhao - Quantum Information Processing, 2017 - Springer
Round-robin differential-phase-shift (RRDPS) quantum key distribution (QKD) scheme
provides an effective way to overcome the signal disturbance from the transmission process …

Unidimensional continuous-variable quantum key distribution using squeezed states

VC Usenko - Physical Review A, 2018 - APS
The possibility of using squeezed states in the recently suggested unidimensional
continuous-variable quantum key distribution based on a single quadrature modulation is …

Role of Initial Entanglement and Non-Gaussianity in the Decoherence<? format?> of Photon-Number Entangled States Evolving in a Noisy Channel

M Allegra, P Giorda, MGA Paris - Physical review letters, 2010 - APS
We address the degradation of continuous variable (CV) entanglement in a noisy channel
focusing on the set of photon-number entangled states. We exploit several separability …

Long-distance distribution of the telecom band intensity difference squeezing generated in a fiber optical parametric amplifier

Y Liu, N Huo, J Li, X Li - Optics Letters, 2018 - opg.optica.org
Using an all-fiber source of pulsed twin beams, with the record intensity difference
squeezing of 6.1±0.15 dB for fiber optical parametric amplifiers, we experimentally distribute …

A universal coherent source for quantum key distribution

SL Zhang, XB Zou, CF Li, CH **, GC Guo - Chinese Science Bulletin, 2009 - Springer
We propose a concept of universal coherent source for quantum key distribution. The weak
coherent pulse (WCP) and heralded single photon source (HSPS) are the most common …