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Experimental realization of a bidirectional quantum analog-to-digital converter between photonic wavefront and qubits [PDF]

open access: yesNature Communications
Quantum systems can be fundamentally classified into discrete-variable (DV) and continuous-variable (CV) systems. The degree of quantum advantage achieved with a quantum system is often dictated by the scalability, robustness, and operational feasibility-
Lei Chen   +8 more
doaj   +2 more sources

Continuous-Variable Quantum Fourier Neural Operator for Solving Partial Differential Equations [PDF]

open access: yesEntropy
Fourier Neural Operators have become a central tool for learning solution operators of partial differential equations, but their spectral layers remain entirely classical and rely on digital Fourier processing.
Paolo Marcandelli   +3 more
doaj   +2 more sources

Estimating Quantum Mutual Information of Continuous-Variable Quantum States by Measuring Purity and Covariance Matrix

open access: yesEntropy, 2022
We derive accessible upper and lower bounds for continuous-variable (CV) quantum states on quantum mutual information. The derivations are based on the observation that some functions of purities bound the difference between quantum mutual information of
Jiyong Park
doaj   +2 more sources

Microwave Gaussian Quantum Sensing With a CNOT Gate Receiver

open access: yesIEEE Access, 2023
In quantum illumination (QI) the non-classical correlations between continuous variable (CV) entangled modes of radiation are exploited to detect the presence of a target embedded in thermal noise. The extreme environment where QI outperforms its optimal
Hany Khalifa   +3 more
doaj   +1 more source

Continuous-Variable Quantum Secret Sharing in Fast-Fluctuating Channels

open access: yesIEEE Transactions on Quantum Engineering, 2023
Recently, several continuous-variable quantum secret sharing (CV-QSS) protocols were proposed, while most of them are limited to the fiber channel systems with a relatively stable transmissivity.
Fangli Yang, Daowen Qiu, Paulo Mateus
doaj   +1 more source

Sculpting bosonic states with arithmetic subtractions

open access: yesNew Journal of Physics, 2022
Continuous-variable (CV) encoding allows information to be processed compactly and efficiently on quantum processors. Recently developed techniques such as controlled beam-splitter operations and the near deterministic phonon subtractions make trapped ...
Lin Htoo Zaw   +6 more
doaj   +1 more source

Teleportation of hybrid entangled states with continuous-variable entanglement

open access: yesScientific Reports, 2022
Hybrid entanglement between discrete-variable (DV) and continuous-variable (CV) quantum systems is an essential resource for heterogeneous quantum networks.
Mingjian He, Robert Malaney
doaj   +1 more source

Continuous-variable quantum approximate optimization on a programmable photonic quantum processor

open access: yesPhysical Review Research, 2023
Variational quantum algorithms (VQAs) provide a promising approach to achieving quantum advantage for practical problems on near-term noisy intermediate-scale quantum (NISQ) devices. Thus far, most studies on VQAs have focused on qubit-based systems, but
Yutaro Enomoto   +3 more
doaj   +1 more source

Cluster States from Gaussian States: Essential Diagnostic Tools for Continuous-Variable One-Way Quantum Computing

open access: yesPRX Quantum, 2021
Continuous-variable (CV) cluster states are a universal quantum computing platform that has experimentally outscaled qubit platforms by orders of magnitude.
Carlos González-Arciniegas   +3 more
doaj   +1 more source

Gain Saturation Modified Quantum Noise Effect on Preparing a Continuous-Variable Entanglement

open access: yesPhotonics, 2022
We examine the gain saturation effect in non-Hermitian systems of coupled gain–loss waveguides and whispering-gallery-mode microresonators, through which a continuous-variable (CV) entanglement of light fields is generated.
Saeid Vashahri-Ghamsari, Bing He
doaj   +1 more source

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