Khabat Heshami

Time-bin-to-polarization conversion of ultrafast photonic qubits

2017 · Physical Review A

The encoding of quantum information in photonic time-bin qubits is apt for long-distance quantum communication schemes. In practice, due to technical constraints such as detector response time, or the speed with which copolarized time-bins can …

Multiparameter transmission estimation at the quantum Cramér–Rao limit on a cloud quantum computer

2022 · New Journal of Physics

Abstract Estimating transmission or loss is at the heart of spectroscopy. To achieve the ultimate quantum resolution limit, one must use probe states with definite photon number and detectors capable of distinguishing the number of …

Entanglement, loss, and quantumness: When balanced beam splitters are best

2024 · arXiv (Cornell University)

Quantum optics routinely uses beam splitters to generate entanglement, including in pioneering experiments conducted by Hanbury-Brown and Twiss and Hong, Ou, and Mandel. The quantum interference at beam splitters lies at the heart of what …