Determination of the asymptotic limits of adaptive photon counting measurements for coherent-state optical phase estimation

MA Rodríguez-García, MT DiMario… - npj Quantum …, 2022 - nature.com
Physical realizations of the canonical phase measurement for the optical phase are
unknown. Single-shot phase estimation, which aims to determine the phase of an optical …

Beating the standard quantum limit for binary phase-shift-keying discrimination with a realistic hybrid feed-forward receiver

MN Notarnicola, S Olivares - Physical Review A, 2023 - APS
We propose a hybrid feed-forward receiver (HFFRE) for the discrimination of binary phase-
shift-keyed coherent states based on the appropriate combination of a displacement feed …

Optimizing state-discrimination receivers for continuous-variable quantum key distribution over a wiretap channel

MN Notarnicola, M Jarzyna, S Olivares… - New Journal of …, 2023 - iopscience.iop.org
We address a continuous-variable quantum key distribution protocol employing quaternary
phase-shift-keying of coherent states and a non-Gaussian measurement inspired by …

Optimized communication strategies with binary coherent states over phase noise channels

MT DiMario, L Kunz, K Banaszek… - npj Quantum Information, 2019 - nature.com
The achievable rate of information transfer in optical communications is determined by the
physical properties of the communication channel, such as the intrinsic channel noise …

Robust measurement for the discrimination of binary coherent states

MT DiMario, FE Becerra - Physical review letters, 2018 - APS
The discrimination of two nonorthogonal states is a fundamental element for secure and
efficient communication. Quantum measurements of nonorthogonal coherent states can …

Quantum receiver for phase-shift keying at the single-photon level

JS Sidhu, S Izumi, JS Neergaard-Nielsen, C Lupo… - Prx Quantum, 2021 - APS
Quantum enhanced receivers are endowed with resources to achieve higher sensitivities
than conventional technologies. For application in optical communications, they provide …

Hybrid near-optimum binary receiver with realistic photon-number-resolving detectors

MN Notarnicola, MGA Paris, S Olivares - JOSA B, 2023 - opg.optica.org
We propose a near-optimum receiver for the discrimination of binary phase-shift-keyed
coherent states employing photon-number-resolving detectors. The receiver exploits a …

Demonstration of optimal non-projective measurement of binary coherent states with photon counting

MT DiMario, FE Becerra - npj Quantum Information, 2022 - nature.com
Quantum state discrimination is a central problem in quantum measurement theory, with
applications spanning from quantum communication to computation. Typical measurement …

Discrimination of thermal baths by single-qubit probes

I Gianani, D Farina, M Barbieri, V Cimini, V Cavina… - Physical Review …, 2020 - APS
Nonequilibrium states of quantum systems in contact with thermal baths help distinguishing
between environments with different temperatures or different statistics. We extend these …

Beating the standard quantum limit for binary phase-shift-keying discrimination with a hybrid feed-forward receiver

MN Notarnicola, S Olivares - arXiv preprint arXiv:2308.04146, 2023 - arxiv.org
We propose a hybrid feed-forward receiver (HFFRE) for the discrimination of binary phase-
shift-keyed coherent states based on the appropriate combination of the displacement feed …