Journal
SCIENCE
Volume 373, Issue 6562, Pages 1511-+Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.abi9917
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Funding
- Center for Ultracold Atoms
- National Science Foundation
- Air Force Office of Scientific Research Multidisciplinary University Research Initiative
- Vannevar Bush Faculty Fellowship
- US Department of Energy (DOE) QSA Center [7568717]
- Army Research Laboratory CDQI
- US Department of Defense (DOD) NDSEG
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The study demonstrates an efficient quantum optical interface using two atoms in individually controlled optical tweezers, achieving entanglement generation, fast nondestructive readout, and full quantum control. By using dynamical decoupling, the entangled state was successfully verified, potentially enabling an integrated optical interface for atomic quantum processors.
The realization of an efficient quantum optical interface for multi-qubit systems is an outstanding challenge in science and engineering. Using two atoms in individually controlled optical tweezers coupled to a nanofabricated photonic crystal cavity, we demonstrate entanglement generation, fast nondestructive readout, and full quantum control of atomic qubits. The entangled state is verified in free space after being transported away from the cavity by encoding the qubits into long-lived states and using dynamical decoupling. Our approach bridges quantum operations at an optical link and in free space with a coherent one-way transport, potentially enabling an integrated optical interface for atomic quantum processors.
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