785 citations · 3.1k across the 17 of their papers we have counts for
18 papers
Probing many-body localization on a noisy quantum computer
D. Zhu, S. Johri, N. H. Nguyen +5
A disordered system of interacting particles exhibits localized behavior when the disorder is large compared to the interaction strength. Studying this phenomenon on a quantum comp…
Efficient sideband cooling protocol for long trapped-ion chains
J. -S. Chen, K. Wright, N. C. Pisenti +5
Trapped ions are a promising candidate for large scale quantum computation. Several systems have been built in both academic and industrial settings to implement modestly-sized qua…
Noise reduction using past causal cones in variational quantum algorithms
Omar Shehab, Isaac H. Kim, Nhung H. Nguyen +5
We introduce an approach to improve the accuracy and reduce the sample complexity of near term quantum-classical algorithms. We construct a simpler initial parameterized quantum st…
Two-qubit entangling gates within arbitrarily long chains of trapped ions
Kevin A. Landsman, Yukai Wu, Pak Hong Leung +5
Ion trap systems are a leading platform for large scale quantum computers. Trapped ion qubit crystals are fully-connected and reconfigurable, owing to their long range Coulomb inte…
Toward convergence of effective field theory simulations on digital quantum computers
Omar Shehab, Kevin A. Landsman, Yunseong Nam +5
We report results for simulating an effective field theory to compute the binding energy of the deuteron nucleus using a hybrid algorithm on a trapped-ion quantum computer. Two inc…
Training of Quantum Circuits on a Hybrid Quantum Computer
D. Zhu, N. M. Linke, M. Benedetti +10
Generative modeling is a flavor of machine learning with applications ranging from computer vision to chemical design. It is expected to be one of the techniques most suited to tak…
Parallel Entangling Operations on a Universal Ion Trap Quantum Computer
C. Figgatt, A. Ostrander, N. M. Linke +4
The circuit model of a quantum computer consists of sequences of gate operations between quantum bits (qubits), drawn from a universal family of discrete operations. The ability to…
Verified Quantum Information Scrambling
Kevin A. Landsman, Caroline Figgatt, Thomas Schuster +4
Quantum scrambling is the dispersal of local information into many-body quantum entanglements and correlations distributed throughout the entire system. This concept underlies the…
Machine learning assisted readout of trapped-ion qubits
Alireza Seif, Kevin A. Landsman, Norbert M. Linke +3
We reduce measurement errors in a quantum computer using machine learning techniques. We exploit a simple yet versatile neural network to classify multi-qubit quantum states, which…
Demonstration of Bayesian quantum game on an ion trap quantum computer
Neal Solmeyer, Norbert M. Linke, Caroline Figgatt +4
We demonstrate a Bayesian quantum game on an ion trap quantum computer with five qubits. The players share an entangled pair of qubits and perform rotations on their qubit as the s…
Measuring the Renyi entropy of a two-site Fermi-Hubbard model on a trapped ion quantum computer
Norbert M. Linke, Sonika Johri, Caroline Figgatt +3
The efficient simulation of correlated quantum systems is the most promising near-term application of quantum computers. Here, we present a measurement of the second Renyi entropy…
Observation of Hopping and Blockade of Bosons in a Trapped Ion Spin Chain
S. Debnath, N. M. Linke, S. -T. Wang +4
The local phonon modes in a Coulomb crystal of trapped ions can represent a Hubbard system of coupled bosons. We selectively prepare single excitations at each site and observe fre…
Robust two-qubit gates in a linear ion crystal using a frequency-modulated driving force
Pak Hong Leung, Kevin A. Landsman, Caroline Figgatt +3
In an ion trap quantum computer, collective motional modes are used to entangle two or more qubits in order to execute multi-qubit logical gates. Any residual entanglement between…
Complete 3-Qubit Grover Search on a Programmable Quantum Computer
C. Figgatt, D. Maslov, K. A. Landsman +3
Searching large databases is an important problem with broad applications. The Grover search algorithm provides a powerful method for quantum computers to perform searches with a q…
Experimental Comparison of Two Quantum Computing Architectures
N. M. Linke, D. Maslov, M. Roetteler +5
We run a selection of algorithms on two state-of-the-art 5-qubit quantum computers that are based on different technology platforms. One is a publicly accessible superconducting tr…
Fault-tolerant quantum error detection
N. M. Linke, M. Gutierrez, K. A. Landsman +4
Quantum computers will eventually reach a size at which quantum error correction becomes imperative. Quantum information can be protected from qubit imperfections and flawed contro…
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…
Demonstration of a small programmable quantum computer with atomic qubits
S. Debnath, N. M. Linke, C. Figgatt +3
Quantum computers can solve certain problems more efficiently than any possible conventional computer. Small quantum algorithms have been demonstrated on multiple quantum computing…