217 citations · 687 across the 21 of their papers we have counts for
21 papers
The Popov's Algorithm with Optimal Bounded Stepsize for Generalized Monotone Variational Inequalities
Nhung Hong Nguyen, Thanh Quoc Trinh, Phan Tu Vuong
For solving unconstrained generalized monotone variational inequality, we prove that the iterations generated by Popov algorithm converge to a solution when stepsize is smaller tha…
Observation of quantum-field-theory dynamics on a spin-phonon quantum computer
Anton T. Than, Saurabh V. Kadam, Vinay Vikramaditya +5
Simulating out-of-equilibrium dynamics of quantum field theories in nature is challenging with classical methods, but is a promising application for quantum computers. Unfortunatel…
Pairwise-parallel entangling gates on orthogonal modes in a trapped-ion chain
Yingyue Zhu, Alaina M. Green, Nhung H. Nguyen +3
Parallel operations are important for both near-term quantum computers and larger-scale fault-tolerant machines because they reduce execution time and qubit idling. We propose and…
Bespoke Pulse Design for Robust Rapid Two-Qubit Gates with Trapped Ions
Seyed Shakib Vedaie, Eduardo J. Páez, Nhung H. Nguyen +2
Two-qubit gate performance is vital for scaling up ion-trap quantum computing. Optimized quantum control is needed to achieve reductions in gate-time and gate error-rate. We descri…
Realizing two-qubit gates through mode engineering on a trapped-ion quantum computer
Ming Li, Nhung H. Nguyen, Alaina M. Green +3
Two-qubit gates are a fundamental constituent of a quantum computer and typically its most challenging operation. In a trapped-ion quantum computer, this is typically implemented w…
Para-particle oscillator simulations on a trapped ion quantum computer
C. Huerta Alderete, Alaina M. Green, Nhung H. Nguyen +3
Deformed oscillators allow for a generalization of the standard fermions and bosons, namely, for the description of para-particles. Such particles, while indiscernible in nature, c…
Multi-round QAOA and advanced mixers on a trapped-ion quantum computer
Yingyue Zhu, Zewen Zhang, Bhuvanesh Sundar +5
Combinatorial optimization problems on graphs have broad applications in science and engineering. The Quantum Approximate Optimization Algorithm (QAOA) is a method to solve these p…
Digital Quantum Simulation of the Schwinger Model and Symmetry Protection with Trapped Ions
Nhung H. Nguyen, Minh C. Tran, Yingyue Zhu +4
Tracking the dynamics of physical systems in real time is a prime application of digital quantum computers. Using a trapped-ion system with up to six qubits, we simulate the real-t…
Experimental Measurement of Out-of-Time-Ordered Correlators at Finite Temperature
Alaina M. Green, A. Elben, C. Huerta Alderete +6
Out-of-time-ordered correlators (OTOCs) are a key observable in a wide range of interconnected fields including many-body physics, quantum information science, and quantum gravity.…
Quantum computational advantage attested by nonlocal games with the cyclic cluster state
Austin K. Daniel, Yinyue Zhu, C. Huerta Alderete +7
We propose a set of Bell-type nonlocal games that can be used to prove an unconditional quantum advantage in an objective and hardware-agnostic manner. In these games, the circuit…
Experimental realization of para-particle oscillators
C. Huerta Alderete, Alaina M. Green, Nhung H. Nguyen +3
Para-particles are fascinating because they are neither bosons nor fermions. While unlikely to be found in nature, they might represent accurate descriptions of physical phenomena…
Cross-Platform Comparison of Arbitrary Quantum Computations
Daiwei Zhu, Ze-Pei Cian, Crystal Noel +14
As we approach the era of quantum advantage, when quantum computers (QCs) can outperform any classical computer on particular tasks, there remains the difficult challenge of how to…
Demonstration of Shor encoding on a trapped-ion quantum computer
Nhung H. Nguyen, Muyuan Li, Alaina M. Green +5
Fault-tolerant quantum error correction (QEC) is crucial for unlocking the true power of quantum computers. QEC codes use multiple physical qubits to encode a logical qubit, which…
Efficient, stabilized two-qubit gates on a trapped-ion quantum computer
Reinhold Blümel, Nikodem Grzesiak, Nhung H. Nguyen +5
Quantum computing is currently limited by the cost of two-qubit entangling operations. In order to scale up quantum processors and achieve a quantum advantage, it is crucial to eco…
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…
Quantum walks and Dirac cellular automata on a programmable trapped-ion quantum computer
C. Huerta Alderete, Shivani Singh, Nhung H. Nguyen +5
The quantum walk formalism is a widely used and highly successful framework for modeling quantum systems, such as simulations of the Dirac equation, different dynamics in both the…
Dynamical mean field theory algorithm and experiment on quantum computers
I. Rungger, N. Fitzpatrick, H. Chen +12
The developments of quantum computing algorithms and experiments for atomic scale simulations have largely focused on quantum chemistry for molecules, while their application in co…
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…
Full-Stack, Real-System Quantum Computer Studies: Architectural Comparisons and Design Insights
Prakash Murali, Norbert Matthias Linke, Margaret Martonosi +3
In recent years, Quantum Computing (QC) has progressed to the point where small working prototypes are available for use. Termed Noisy Intermediate-Scale Quantum (NISQ) computers,…
Generation of Thermofield Double States and Critical Ground States with a Quantum Computer
D. Zhu, S. Johri, N. M. Linke +6
Finite-temperature phases of many-body quantum systems are fundamental to phenomena ranging from condensed-matter physics to cosmology, yet they are generally difficult to simulate…
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…