2021/10/19 by Simon Hollerith, Kritsana Srakaew, David Wei +10 · 55 citations
Computer Science · Physics and Astronomy · #Atom (system on chip) #Cold Atom Physics and Bose-Einstein Condensates #Coupling (piping) #Quantum #Quantum Information and Cryptography #Quantum computer #Quantum entanglement #Quantum gate #Quantum many-body systems #Rydberg atom #Rydberg formula #cond-mat.quant-gas #physics.atom-ph #quant-ph
paper · pdf · open access · doi:10.1103/physrevlett.128.113602
published in Physical Review Letters 128(11), 113602 (American Physical Society) · 5 pages, 4 figures + supplementary information
arxiv created 2021/10/19 · openalex created_date 2021/10/25 · openalex publication_date 2022/03/14 · arxiv updated 2022/03/23 · openalex updated_date 2026/08/06
Measurement-based quantum computing relies on the rapid creation of large-scale entanglement in a register of stable qubits. Atomic arrays are well suited to store quantum information, and entanglement can be created using highly-excited Rydberg states. Typically, isolating pairs during gate operation is difficult because Rydberg interactions feature long tails at large distances. Here, we engineer distance-selective interactions that are strongly peaked in distance through off-resonant laser coupling of molecular potentials between Rydberg atom pairs. Employing quantum gas microscopy, we verify the dressed interactions by observing correlated phase evolution using many-body Ramsey interferometry. We identify atom loss and coupling to continuum modes as a limitation of our present scheme and outline paths to mitigate these effects, paving the way towards the creation of large-scale entanglement.