54 citations · 144 across the 8 of their papers we have counts for
8 papers
Trapped-ion two-qubit gates with >99.99% fidelity without ground-state cooling
A. C. Hughes, R. Srinivas, C. M. Löschnauer +6
We introduce the 'smooth gate', an entangling method for trapped-ion qubits where residual spin-motion entanglement errors are adiabatically eliminated by ramping the gate detuning…
Subspace Leakage Error Randomized Benchmarking of Mølmer-Sørensen Gates
R. T. Sutherland, A. C. Hughes, J. P. Marceaux +3
We demonstrate a new technique that adapts single-qubit randomized benchmarking to two-qubit Mølmer-Sørensen gates. We use the controllable gate phase to generate Cliffords that ac…
Comparison of trapped-ion entangling gate mechanisms for mixed species
V. M. Schäfer, A. C. Hughes, O. Bazavan +4
Entangling gates are an essential capability of quantum computers. There are different methods for implementing two-qubit gates, with respective advantages and disadvantages. We in…
Scalable, high-fidelity all-electronic control of trapped-ion qubits
C. M. Löschnauer, J. Mosca Toba, A. C. Hughes +10
The central challenge of quantum computing is implementing high-fidelity quantum gates at scale. However, many existing approaches to qubit control suffer from a scale-performance…
Coherent Control of Trapped Ion Qubits with Localized Electric Fields
R. Srinivas, C. M. Löschnauer, M. Malinowski +8
We present a new method for coherent control of trapped ion qubits in separate interaction regions of a multi-zone trap by simultaneously applying an electric field and a spin-depe…
Synthesizing a spin-dependent force for optical, metastable, and ground state trapped-ion qubits
O. Băzăvan, S. Saner, M. Minder +5
A single bichromatic field near-resonant to a qubit transition is typically used for or Mølmer-Sørensen type interactions in trapped ion systems. Using this fie…
Benchmarking a high-fidelity mixed-species entangling gate
A. C. Hughes, V. M. Schäfer, K. Thirumalai +4
We implement a two-qubit logic gate between a hyperfine qubit and a Zeeman qubit. For this pair of ion species, the S--P optical trans…
Probing Qubit Memory Errors at the Part-per-Million Level
M. A. Sepiol, A. C. Hughes, J. E. Tarlton +7
Robust qubit memory is essential for quantum computing, both for near-term devices operating without error correction, and for the long-term goal of a fault-tolerant processor. We…