Compare Papers
Paper 1
Divided-Qubit Noise-Tolerant Strategy for Bell State Preparation in Qiskit
Yang O, Sun W.
- Year
- 2025
- Journal
- Europe PMC
- DOI
- 10.20944/preprints202510.0281.v2
- arXiv
- -
No abstract.
Open paperPaper 2
Generic eigenstate preparation via measurement-based purification
Jia-shun Yan, Jun Jing
- Year
- 2023
- Journal
- arXiv preprint
- DOI
- arXiv:2307.16496
- arXiv
- 2307.16496
It is not a general opinion that that a quantum system could be purified into a target eigenstate via repeated measurements on a coupled qubit rather than direct transitions in the Hamiltonian. The projective measurement on the ancillary qubit gives rise to the positive operator-valued measures on the system that can filter out the unwanted states except the target one. In application, we discuss the measurement-based entanglement purification by which maximally entangled states (Bell states and Greenberger-Horne-Zeilinger states) can be distilled from the maximally mixed states or separable states. We also demonstrate the significant acceleration of a stimulated Raman adiabatic passage assisted by similar measurements. Our scheme allows arbitrary eigenstate preparation and reveals efficiency in multipartite systems for subspace purification. It offers a promising and generic quantum-control framework enriching the functionalities of quantum measurement.
Open paper