Journal
PHYSICAL REVIEW A
Volume 94, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.94.042308
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Funding
- ARO Atomic and Molecular Physics Program
- AFOSR MURI on Quantum Measurement and Verification
- IARPA LogiQ program
- ARL Center for Distributed Quantum Information
- NSF Physics Frontier Center at JQI
- Direct For Mathematical & Physical Scien
- Division Of Physics [1430094] Funding Source: National Science Foundation
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In quantum information science, the external control of qubits must be balanced with the extreme isolation of the qubits from the environment. Atomic qubit systems typically mitigate this balance through the use of gated laser fields that can create superpositions and entanglement between qubits. Here we propose the use of high-order optical Stark shifts from optical fields to manipulate the splitting of atomic qubits that are insensitive to other types of fields. We demonstrate a fourth-order ac Stark shift in a trapped atomic ion system that does not require extra laser power beyond that needed for other control fields. We individually address a chain of tightly spaced trapped ions and show how these controlled shifts can produce an arbitrary product state of 10 ions as well as generate site-specific magnetic field terms in a simulated spin Hamiltonian.
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