Ultrafast Gates for Single Atomic Qubits

2010/05/22 by W. C. Campbell, J. Mizrahi, Q. Quraishi +6 · 2 citations
Physics and Astronomy · #physics.atom-ph #quant-ph

paper · pdf · doi:10.1103/physrevlett.105.090502

published as Phys. Rev. Lett. 105, 090502 (2010) · 10 pages, 3 figures

arxiv created 2010/05/22 · arxiv updated 2010/08/30

Abstract

We demonstrate single qubit operations on a trapped atom hyperfine qubit using a single ultrafast pulse from a mode-locked laser. We shape the pulse from the laser and perform a pi rotation of the qubit in less than 50 ps with a population transfer exceeding 99% and negligible effects from spontaneous emission or ac Stark shifts. The gate time is significantly shorter than the period of atomic motion in the trap (Rabi frequency / trap frequency > 10000), demonstrating that this interaction takes place deep within the strong excitation regime.

Cited by

• Precision Polarization Tuning for Light Shift Mitigation in Trapped-Ion Qubits
• Realization and Calibration of Continuously Parameterized Two-Qubit Gates on a Trapped-Ion Quantum Processor

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