A5012655941- Quantum Information and Cryptography
- Quantum Mechanics and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Computing Algorithms and Architecture
- Quantum optics and atomic interactions
- Mass Spectrometry Techniques and Applications
- Semiconductor Lasers and Optical Devices
- Neural Networks and Applications
- Various Chemistry Research Topics
- Advanced Chemical Physics Studies
- Spectroscopy and Quantum Chemical Studies
- Photoreceptor and optogenetics research
- Quantum and electron transport phenomena
- Pulsed Power Technology Applications
- Plasma Applications and Diagnostics
- Atomic and Molecular Physics
- Neural Networks and Reservoir Computing
- Microbial Inactivation Methods
Georgia Institute of Technology
2009-2024
Georgia Tech Research Institute
2021-2024
Entanglement generation in trapped-ion systems has relied thus far on two distinct but related geometric phase gate techniques: Molmer-Sorensen and light-shift gates. We recently proposed a variant of the scheme where qubit levels are separated by an optical frequency [B. C. Sawyer K. R. Brown, Phys. Rev. A 103, 022427 (2021)]. Here we report experimental demonstration this entangling using pair $^{40}$Ca$^+$ ions cryogenic surface-electrode ion trap commercial, high-power, 532 nm Nd:YAG...
Abstract The trapped-ion quantum charge-coupled device (QCCD) architecture is a leading candidate for advanced information processing. In current QCCD implementations, imperfect ion transport and anomalous heating can excite motion during calculation. To counteract this, intermediate cooling necessary to maintain high-fidelity gate performance. Cooling the computational ions sympathetically with of another species, commonly employed strategy, creates significant runtime bottleneck. Here, we...
We estimate the resource requirements, total number of physical qubits and computational time, required to compute ground-state energy a one-dimensional quantum transverse Ising model (TIM) $N$ spin-1/2 particles, as function system size numerical precision. This is based on analyzing impact fault-tolerant error correction in context logic array architecture. Our results show that significant amount implement TIM problem due exponential scaling time with desired precision energy. Comparison...
Ion transport is an essential operation in some models of quantum information processing, where fast ion shuttling with minimal motional excitation necessary for efficient, high-fidelity logic. While and cold has been demonstrated, the dynamics specific trajectory during diabatic have not studied detail. Here we describe a position-dependent optical deshelving technique useful sampling ion's position throughout its trajectory, demonstrate on linear $^{40}\text{Ca}^+$ surface-electrode trap....
The masses of single molecular ions are nondestructively measured by cotrapping the ion interest with a laser-cooled atomic ion, (40)Ca(+). Measurement resolved sidebands dipole forbidden transition on reveals normal-mode frequencies two system. mass ions, (40)CaH(+) and (40)Ca(16)O(+), then determined from frequencies. Isotopes Ca(+) used to determine effects stray electric fields normal mode measurement. future use sideband experiments for spectroscopy is also discussed.
We implement a two-qubit entangling M{\o}lmer-S{\o}rensen interaction by transporting two co-trapped $^{40}\mathrm{Ca}^{+}$ ions through stationary, bichromatic optical beam within surface-electrode Paul trap. describe procedure for achieving constant Doppler shift during the transport which uses fine temporal adjustment of moving confinement potential. The fixed duration transported laser as well dynamically changing ac Stark require alterations to calibration procedures used stationary...
We present a framework for quantum process tomography of two-ion interactions that leverages modulations the trapping potential and composite pulses from global laser beam to achieve individual-ion addressing. Tomographic analysis identity delay processes reveals dominant error contributions decoherence slow qubit frequency drift during experiment. use this on two co-trapped $^{40}$Ca$^+$ ions analyze both an optimized overpowered Mølmer-Sørensen gate compare results less informative...
The trapped-ion quantum charge-coupled device (QCCD) architecture is a leading candidate for advanced information processing. In current QCCD implementations, imperfect ion transport and anomalous heating can excite motion during calculation. To counteract this, intermediate cooling necessary to maintain high-fidelity gate performance. Cooling the computational ions sympathetically with of another species, commonly employed strategy, creates significant runtime bottleneck. Here, we...
Ion transport is an essential operation in some models of quantum information processing, where fast ion shuttling with minimal motional excitation necessary for efficient, high-fidelity logic. While and cold has been demonstrated, the dynamics specific trajectory during diabatic have not studied detail. Here we describe a position-dependent optical deshelving technique useful sampling ion's position throughout its trajectory, demonstrate on linear $^{40}\text{Ca}^+$ surface-electrode trap....