Discriminating mixed qubit states with collective measurements

LO Conlon, F Eilenberger, PK Lam… - Communications …, 2023 - nature.com
It is a central fact in quantum mechanics that non-orthogonal states cannot be distinguished
perfectly. In general, the optimal measurement for distinguishing such states is a collective …

Self-testing of multiple unsharpness parameters through sequential violations of a noncontextual inequality

R Paul, S Sasmal, AK Pan - Physical Review A, 2024 - APS
Self-testing protocols refer to novel device-independent certification schemes wherein the
devices are uncharacterized and the dimension of the system remains unspecified. The …

Demonstration of -symmetric quantum state discrimination

X Wang, G Zhu, L Xiao, X Zhan, P Xue - Quantum Information Processing, 2024 - Springer
The fundamental quantum mechanical features forbid non-orthogonal quantum states to be
distinguished accurately through a single-shot measurement. Using parity-time (PT) …

Contextuality witness inspired by optimal state discrimination

C Roch i Carceller, JB Brask - Physical Review A, 2024 - APS
Many protocols and tasks in quantum information science rely inherently on the fundamental
notion of contextuality to provide advantages over their classical counterparts, and …

Efficient generation of polarization-entangled photons in metal-organic framework waveguides

S Paiva, RA Fritz, S Raj, YJ Colón, F Herrera - Optics Express, 2024 - opg.optica.org
Parametric nonlinear optical processes are instrumental in optical quantum technology for
generating entangled light. However, the range of materials conventionally used for …

Experimental optimal discrimination of states of a qubit with fixed rates of inconclusive outcomes

LF Melo, MA Solís-Prosser, O Jiménez, A Delgado… - Physical Review …, 2023 - APS
In a general optimized measurement scheme for discriminating between nonorthogonal
quantum states, the error rate is minimized under the constraint of a fixed rate of …

Giant Generation of Polarization-Entangled Photons in Metal Organic Framework Waveguides

S Paiva, RA Fritz, S Raj, YJ Colón, F Herrera - arXiv preprint arXiv …, 2023 - arxiv.org
Parametric nonlinear optical processes are instrumental in optical quantum technology for
generating entangled light. However, the range of materials conventionally used for …

Training a quantum measurement device to discriminate unknown non-orthogonal quantum states

D Concha, L Pereira, L Zambrano, A Delgado - Scientific reports, 2023 - nature.com
Here, we study the problem of decoding information transmitted through unknown quantum
states. We assume that Alice encodes an alphabet into a set of orthogonal quantum states …

Attainability of quantum state discrimination bounds with collective measurements on finite copies

L Conlon, JM Koh, B Shajilal, J Sidhu, PK Lam… - arXiv preprint arXiv …, 2024 - arxiv.org
One of the fundamental tenets of quantum mechanics is that non-orthogonal states cannot
be distinguished perfectly. When distinguishing multiple copies of a mixed quantum state, a …

[PDF][PDF] TAREAS PRÁCTICAS DE INFORMACIÓN CUÁNTICA MEDIANTE EL USO DE FOTONES CORRELACIONADOS EN POLARIZACIÓN

FQ Moro - 2024 - repositorio.udec.cl
Resumen La tesis titulada “Tareas Prácticas de Información Cuántica Mediante el Uso de
Fotones Correlacionados en Polarización” se centra en la implementación experimental y el …