Year: 2025
Type: article
Abstract: We propose an entanglement protocol where ions illuminated by optical tweezers serve as control qubits. We experimentally demonstrate this proposal with a controlled Mölmer-Sörensen operation on a three-ion chain, analogous to the canonical Toffoli gate. Our demonstration features cases in which the control qubit was in one of its logical basis states, and not in their superposition, due to dephasing by tweezer beam intensity fluctuations. Finally, we discuss how our protocol generalizes to a broad class of unitary operations and larger qubit systems, enabling a single-pulse implementation of n-controlled unitaries.
Source: Physical Review Letters
DOI: 10.1103/h4c6-463f
Authors: David Schwerdt, Lee Peleg, Gal Dekel, Lekshmi Rajagopal, Oz Matoki, Avram Gross, Yotam Shapira, Nitzan Akerman, Roee Ozeri
Institution: Weizmann Institute of Science
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4417214167