1k citations · 6.7k across the 125 of their papers we have counts for
23 papers · 1 filter
Architectures for Multinode Superconducting Quantum Computers
James Ang, Gabriella Carini, Yanzhu Chen +30
Many proposals to scale quantum technology rely on modular or distributed designs where individual quantum processors, called nodes, are linked together to form one large multinode…
Quantum repeaters: From quantum networks to the quantum internet
Koji Azuma, Sophia E. Economou, David Elkouss +4
A quantum internet is the holy grail of quantum information processing, enabling the deployment of a broad range of quantum technologies and protocols on a global scale. However, n…
Hello Quantum World! A rigorous but accessible first-year university course in quantum information science
Sophia E. Economou, Edwin Barnes
Addressing workforce shortages within the Quantum Information Science and Engineering (QISE) community requires attracting and retaining students from diverse backgrounds early on…
Deterministic generation of qudit photonic graph states from quantum emitters
Zahra Raissi, Edwin Barnes, Sophia E. Economou
We propose and analyze deterministic protocols to generate qudit photonic graph states from quantum emitters. We show that our approach can be applied to generate any qudit graph s…
TETRIS-ADAPT-VQE: An adaptive algorithm that yields shallower, denser circuit ansätze
Panagiotis G. Anastasiou, Yanzhu Chen, Nicholas J. Mayhall +2
Adaptive quantum variational algorithms are particularly promising for simulating strongly correlated systems on near-term quantum hardware, but they are not yet viable due, in lar…
Performance analysis of quantum repeaters enabled by deterministically generated photonic graph states
Yuan Zhan, Paul Hilaire, Edwin Barnes +2
By encoding logical qubits into specific types of photonic graph states, one can realize quantum repeaters that enable fast entanglement distribution rates approaching classical co…
An entanglement-based volumetric benchmark for near-term quantum hardware
Kathleen E. Hamilton, Nouamane Laanait, Akhil Francis +8
We introduce a volumetric benchmark for near-term quantum platforms based on the generation and verification of genuine entanglement across n-qubits using graph states and direct s…
High-rate entanglement between a semiconductor spin and indistinguishable photons
N. Coste, D. Fioretto, N. Belabas +15
Photonic graph states, quantum light states where multiple photons are mutually entangled, are key resources for optical quantum technologies. They are notably at the core of error…
Symmetry breaking slows convergence of the ADAPT Variational Quantum Eigensolver
Luke W. Bertels, Harper R. Grimsley, Sophia E. Economou +2
Because quantum simulation of molecular systems is expected to provide the strongest advantage over classical computing methods for systems exhibiting strong electron correlation,…
Deterministic generation of entangled photonic cluster states from quantum dot molecules
Arian Vezvaee, Paul Hilaire, Matthew F. Doty +1
Successful generation of photonic cluster states is the key step in the realization of measurement-based quantum computation and quantum network protocols. Several proposals for th…
Scaling adaptive quantum simulation algorithms via operator pool tiling
John S. Van Dyke, Karunya Shirali, George S. Barron +3
Adaptive variational quantum simulation algorithms use information from the quantum computer to dynamically create optimal trial wavefunctions for a given problem Hamiltonian. A ke…
Quantum self-consistent equation-of-motion method for computing molecular excitation energies, ionization potentials, and electron affinities on a quantum computer
Ayush Asthana, Ashutosh Kumar, Vibin Abraham +8
Near-term quantum computers are expected to facilitate material and chemical research through accurate molecular simulations. Several developments have already shown that accurate…
Avoiding leakage and errors caused by unwanted transitions in Lambda systems
Arian Vezvaee, Evangelia Takou, Paul Hilaire +2
Three-level Lambda systems appear in various quantum information processing platforms. In several control schemes, the excited level serves as an auxiliary state for implementing g…
How Much Entanglement Do Quantum Optimization Algorithms Require?
Yanzhu Chen, Linghua Zhu, Chenxu Liu +3
Many classical optimization problems can be mapped to finding the ground states of diagonal Ising Hamiltonians, for which variational quantum algorithms such as the Quantum Approxi…
Near-deterministic hybrid generation of arbitrary photonic graph states using a single quantum emitter and linear optics
Paul Hilaire, Leonid Vidro, Hagai S. Eisenberg +1
Since linear-optical two-photon gates are inherently probabilistic, measurement-based implementations are particularly well suited for photonic platforms: a large highly-entangled…
ADAPT-VQE is insensitive to rough parameter landscapes and barren plateaus
Harper R. Grimsley, George S. Barron, Edwin Barnes +2
Variational quantum eigensolvers (VQEs) represent a powerful class of hybrid quantum-classical algorithms for computing molecular energies. Various numerical issues exist for these…
Designing globally optimal entangling gates using geometric space curves
Ho Lun Tang, Kyle Connelly, Ada Warren +3
High-fidelity entangling gates are essential for quantum computation. Currently, most approaches to designing such gates are based either on simple, analytical pulse waveforms or o…
Adaptive variational algorithms for quantum Gibbs state preparation
Ada Warren, Linghua Zhu, Nicholas J. Mayhall +2
The preparation of Gibbs thermal states is an important task in quantum computation with applications in quantum simulation, quantum optimization, and quantum machine learning. How…
Minimizing state preparation times in pulse-level variational molecular simulations
Ayush Asthana, Chenxu Liu, Oinam Romesh Meitei +3
Quantum simulation on NISQ devices is severely limited by short coherence times. A variational pulse-shaping algorithm known as ctrl-VQE was recently proposed to address this issue…
Precise control of entanglement in multinuclear spin registers coupled to defects
Evangelia Takou, Edwin Barnes, Sophia E. Economou
Quantum networks play an indispensable role in quantum information tasks such as secure communications, enhanced quantum sensing, and distributed computing. Among the most mature a…
Extracting perfect GHZ states from imperfect weighted graph states via entanglement concentration
Rafail Frantzeskakis, Chenxu Liu, Zahra Raissi +2
Photonic GHZ states serve as the central resource for a number of important applications in quantum information science, including secret sharing, sensing, and fusion-based quantum…
Solving Nuclear Structure Problems with the Adaptive Variational Quantum Algorithm
A. M. Romero, J. Engel, Ho Lun Tang +1
We use the Lipkin-Meshkov-Glick (LMG) model and the valence-space nuclear shell model to examine the likely performance of variational quantum eigensolvers in nuclear-structure the…
Proposal for generating complex microwave graph states using superconducting circuits
Chenxu Liu, Edwin Barnes, Sophia Economou
Microwave photonic graph states provide a promising approach for robust quantum communication between remote superconducting chips using microwave photons. Recently, Besse et al. […