515 citations · 1.7k across the 13 of their papers we have counts for
13 papers
Benchmarking an 11-qubit quantum computer
K. Wright, K. M. Beck, S. Debnath +21
The field of quantum computing has grown from concept to demonstration devices over the past 20 years. Universal quantum computing offers efficiency in approaching problems of scie…
Ground-state energy estimation of the water molecule on a trapped ion quantum computer
Yunseong Nam, Jwo-Sy Chen, Neal C. Pisenti +23
Quantum computing leverages the quantum resources of superposition and entanglement to efficiently solve computational problems considered intractable for classical computers. Exam…
Ultrafast Creation of Large Schrödinger Cat States of an Atom
K. G. Johnson, J. D. Wong-Campos, B. Neyenhuis +2
Mesoscopic quantum superpositions, or Schrödinger cat states, are widely studied for fundamental investigations of quantum measurement and decoherence as well as applications in se…
Demonstration of qubit operations below a rigorous fault tolerance threshold with gate set tomography
Robin Blume-Kohout, John King Gamble, Erik Nielsen +4
Quantum information processors promise fast algorithms for problems inaccessible to classical computers. But since qubits are noisy and error-prone, they will depend on fault-toler…
Active Stabilization of Ion Trap Radiofrequency Potentials
K. G. Johnson, J. D. Wong-Campos, A. Restelli +4
We actively stabilize the harmonic oscillation frequency of a laser-cooled atomic ion confined in a rf Paul trap by sampling and rectifying the high voltage rf applied to the trap…
High resolution adaptive imaging of a single atom
J. D. Wong-Campos, K. G. Johnson, B. Neyenhuis +2
We report the optical imaging of a single atom with nanometer resolution using an adaptive optical alignment technique that is applicable to general optical microscopy. By decompos…
Sensing Atomic Motion from the Zero Point to Room Temperature with Ultrafast Atom Interferometry
K. G. Johnson, B. Neyenhuis, J. Mizrahi +2
We sense the motion of a trapped atomic ion using a sequence of state-dependent ultrafast momentum kicks. We use this atom interferometer to characterize a nearly-pure quantum stat…
Beat note stabilization of mode-locked lasers for quantum information processing
R. Islam, W. C. Campbell, T. Choi +18
We stabilize a chosen radiofrequency beat note between two optical fields derived from the same mode-locked laser pulse train, in order to coherently manipulate quantum information…
Robust, self-consistent, closed-form tomography of quantum logic gates on a trapped ion qubit
Robin Blume-Kohout, John King Gamble, Erik Nielsen +3
We introduce and demonstrate experimentally: (1) a framework called "gate set tomography" (GST) for self-consistently characterizing an entire set of quantum logic gates on a black…
Quantum Control of Qubits and Atomic Motion Using Ultrafast Laser Pulses
J. Mizrahi, B. Neyenhuis, K. Johnson +4
Pulsed lasers offer significant advantages over CW lasers in the coherent control of qubits. Here we review the theoretical and experimental aspects of controlling the internal and…
Ultrafast Spin-Motion Entanglement and Interferometry with a Single Atom
J. Mizrahi, C. Senko, B. Neyenhuis +4
We report entanglement of a single atom's hyperfine spin state with its motional state in a timescale of less than 3 ns. We engineer a short train of intense laser pulses to impart…
Ultrafast Gates for Single Atomic Qubits
W. C. Campbell, J. Mizrahi, Q. Quraishi +6
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…
Entanglement of Atomic Qubits using an Optical Frequency Comb
D. Hayes, D. N. Matsukevich, P. Maunz +7
We demonstrate the use of an optical frequency comb to coherently control and entangle atomic qubits. A train of off-resonant ultrafast laser pulses is used to efficiently and cohe…