Quantum Science with Arrays of Alkaline-Earth Atoms

QUEST Center event
No
Speaker
Ran Finkelstein (TAU(
Date
22/06/2025 - 12:00 - 11:00Add to Calendar 2025-06-22 11:00:00 2025-06-22 12:00:00 Quantum Science with Arrays of Alkaline-Earth Atoms Large arrays of trapped neutral atoms have emerged over the past few years as a promising platform for quantum information processing, combining inherent scalability with high-fidelity control and site-resolved readout. In this talk, I will discuss my recent work with arrays of alkaline-earth atoms. These divalent atoms offer unique properties stemming largely from their long-lived metastable states, which form the basis of the optical atomic clock.First, I will describe the design of a universal quantum processor based on optical clock qubits and its application in quantum metrology. I will focus on the recent demonstration of record-fidelity entangling gates and on the preparation of a cascade of different GHZ states. Second, I will discuss how to use the narrow clock transition to measure and remove thermal excitations of atoms in tweezers (a technique known as erasure conversion) which we utilize to generate hyperentangled states of motion and spin and to perform repeated ancilla-based readout. Third, I will discuss another modality of analog quantum simulation with Rydberg atom arrays.Finally, I will briefly share some of the plans for the new apparatus we are setting up at Tel Aviv University with trapped Ytterbium atoms for quantum optics and quantum simulation. Recording here: https://biu-ac-il.zoom.us/rec/share/SOnxpFIxttNg4XIQiqW9qLok3Zllo38fWTyTM6B0bFIVHGCyrqXh1OGKSlFroXMO.KjhM0t4GFlkFrGUA ZOOM https://biu-ac-il.zoom.us/j/87276355631 המחלקה לפיזיקה physics.dept@mail.biu.ac.il Asia/Jerusalem public
Abstract

Large arrays of trapped neutral atoms have emerged over the past few years as a promising platform for quantum information processing, combining inherent scalability with high-fidelity control and site-resolved readout. In this talk, I will discuss my recent work with arrays of alkaline-earth atoms. These divalent atoms offer unique properties stemming largely from their long-lived metastable states, which form the basis of the optical atomic clock.
First, I will describe the design of a universal quantum processor based on optical clock qubits and its application in quantum metrology. I will focus on the recent demonstration of record-fidelity entangling gates and on the preparation of a cascade of different GHZ states. Second, I will discuss how to use the narrow clock transition to measure and remove thermal excitations of atoms in tweezers (a technique known as erasure conversion) which we utilize to generate hyperentangled states of motion and spin and to perform repeated ancilla-based readout. Third, I will discuss another modality of analog quantum simulation with Rydberg atom arrays.
Finally, I will briefly share some of the plans for the new apparatus we are setting up at Tel Aviv University with trapped Ytterbium atoms for quantum optics and quantum simulation.

 

Recording here: https://biu-ac-il.zoom.us/rec/share/SOnxpFIxttNg4XIQiqW9qLok3Zllo38fWTyTM6B0bFIVHGCyrqXh1OGKSlFroXMO.KjhM0t4GFlkFrGUA

תאריך עדכון אחרון : 22/06/2025