21 papers
The Entanglement Content of Quantum Measurement Bases
Jef Pauwels, Otfried Gühne
Bell-state measurements are essential ingredients in many protocols for quantum information processing, ranging from quantum teleportation and dense coding to entanglement distribu…
Bipartite Bound Information Exists
Jef Pauwels, Nicolas Gisin, Renato Renner
Bound entanglement is an extreme irreversibility of quantum theory: certain states cost entanglement to create, yet no singlet can be distilled from them. Twenty-five years ago, Gi…
Uncountably many inequivalent maximally entangled measurements for two qutrits
Elna Svegborn, Jef Pauwels, Nicolas Gisin +1
Every two-qubit measurement basis composed of maximally entangled eigenstates can be transformed into the Bell basis via local unitary operations. For higher dimensions, in contras…
Tunable Families of Multiqubit Elegant Joint Measurements
Jef Pauwels, Nicolas Gisin
We give a closed-form construction of the -qubit Elegant Joint Measurement (EJM) proposed in [PRL \textbf{136}, 190201 (2026)] and show that it is part of a tunable family of me…
Certification of the genuine resolution of photon number resolving detectors
Jef Pauwels, Towsif Taher, Roope Uola +3
Photon-number-resolving (PNR) detectors are essential components of photonic quantum technologies, yet thus far, no practical metric exists to certify how many photons they can gen…
The Multiqubit Elegant Joint Measurement
Jef Pauwels, Nicolas Gisin
The Elegant Joint Measurement (EJM) is a highly symmetric, partially entangled two-qubit measurement whose local marginals form a regular tetrahedron on the Bloch sphere and which…