127 citations · 317 across the 19 of their papers we have counts for
19 papers
Designing robust molecular spins for quantum technologies with theoretical chemistry
Timothy J. Krogmeier, Pranay Venkatesh, Mikayla Z. Fahrenbruch +3
Molecular spins represent a versatile platform for quantum information science, with the potential to offer chemically tunable, addressable qubits. However, achieving this requires…
Understanding the effects of competing spin-pair dephasing pathways in molecular spins
Timothy J. Krogmeier, James Bradley, Anthony W. Schlimgen +1
Molecular spins offer promise in emerging quantum technologies such as quantum sensing and computing. At low temperatures, nuclear spin-spin interactions affect electron spin coher…
A perturbative non-Markovian treatment to low-temperature spin decoherence
Timothy J. Krogmeier, Anthony W. Schlimgen, Kade Head-Marsden
Molecular spins are promising candidates for quantum information science, leveraging coherent electronic spin states for quantum sensing and computation. However, the practical app…
Subspace Selected Variational Quantum Configuration Interaction with a Partial Walsh Series
Koray Aydoğan, Anna R. Spak, Kade Head-Marsden +1
Estimating the ground-state energy of a quantum system is one of the most promising applications for quantum algorithms. Here we propose a variational quantum eigensolver (VQE) \em…
Preserving fermionic statistics for single-particle approximations in microscopic quantum master equations
Mikayla Z. Fahrenbruch, Anthony W. Schlimgen, Kade Head-Marsden
Microscopic master equations have gained traction for the dissipative treatment of molecular spin and solid-state systems for quantum technologies. Single particle approximations a…
Quantum Simulation of Two-Level -Symmetric Systems Using Hermitian Hamiltonians
Maryam Abbasi, Koray Aydogan, Anthony W. Schlimgen +1
Parity-time ()-symmetric Hamiltonians exhibit non-unitary dynamical evolution while maintaining real spectra, and offer unique approaches to quantum sensing and entanglement ge…
Orbital Entanglement and The Double -Shell Effect in Binary Transition Metal Molecules
Julianne S. Lampert, Timothy J. Krogmeier, Anthony W. Schlimgen +1
Accurate modeling of transition metal-containing compounds is of great interest due to their wide-ranging and significant applications. These systems present several challenges fro…
Stabilizing steady-state properties of open quantum systems with parameter engineering
Koray Aydoğan, Anthony W. Schlimgen, Kade Head-Marsden
Realistic quantum systems are affected by environmental loss, which is often seen as detrimental for applications in quantum technologies. Alternatively, weak coupling to an enviro…
Low temperature decoherence dynamics in molecular spin systems using the Lindblad master equation
Timothy J. Krogmeier, Anthony W. Schlimgen, Kade Head-Marsden
Understanding the spin dynamics in low-temperature settings is crucial to designing and optimizing molecular spin systems for use in emerging quantum technologies. At low temperatu…
Quantum Algorithms and Applications for Open Quantum Systems
Luis H. Delgado-Granados, Timothy J. Krogmeier, LeeAnn M. Sager-Smith +10
Accurate models for open quantum systems -- quantum states that have non-trivial interactions with their environment -- may aid in the advancement of a diverse array of fields, inc…
Singular value decomposition quantum algorithm for quantum biology
Emily K. Oh, Timothy J. Krogmeier, Anthony W. Schlimgen +1
There has been a recent interest in quantum algorithms for the modelling and prediction of non-unitary quantum dynamics using current quantum computers. The field of quantum biolog…
Quantum Simulation of Open Quantum Systems Using Density-Matrix Purification
Anthony W. Schlimgen, Kade Head-Marsden, LeeAnn M. Sager-Smith +2
Electronic structure and transport in realistically-sized systems often require an open quantum system (OQS) treatment, where the system is defined in the context of an environment…
Quantum State Preparation and Non-Unitary Evolution with Diagonal Operators
Anthony W. Schlimgen, Kade Head-Marsden, LeeAnn M. Sager-Smith +2
Realizing non-unitary transformations on unitary-gate based quantum devices is critically important for simulating a variety of physical problems including open quantum systems and…
Information back-flow in quantum non-Markovian dynamics and its connection to teleportation
Spyros Tserkis, Kade Head-Marsden, Prineha Narang
A quantum process is called non-Markovian when memory effects take place during its evolution. Quantum non-Markovianity is a phenomenon typically associated with the information ba…
Quantum Simulation of Open Quantum Systems Using a Unitary Decomposition of Operators
Anthony W. Schlimgen, Kade Head-Marsden, LeeAnn M. Sager +2
Electron transport in realistic physical and chemical systems often involves the non-trivial exchange of energy with a large environment, requiring the definition and treatment of…
A general quantum algorithm for open quantum dynamics demonstrated with the Fenna-Matthews-Olson complex
Zixuan Hu, Kade Head-Marsden, David A. Mazziotti +2
Using quantum algorithms to simulate complex physical processes and correlations in quantum matter has been a major direction of quantum computing research, towards the promise of…
Unboxing Quantum Black Box Models: Learning Non-Markovian Dynamics
Stefan Krastanov, Kade Head-Marsden, Sisi Zhou +3
Characterizing the memory properties of the environment has become critical for the high-fidelity control of qubits and other advanced quantum systems. However, current non-Markovi…
Active Space Pair 2-Electron Reduced Density Matrix Theory for Strong Correlation
Kade Head-Marsden, David A. Mazziotti
An active space variational calculation of the 2-electron reduced density matrix (2-RDM) is derived and implemented where the active orbitals are correlated within the pair approxi…
Capturing Non-Markovian Dynamics on Near-Term Quantum Computers
Kade Head-Marsden, Stefan Krastanov, David A. Mazziotti +1
With the rapid progress in quantum hardware, there has been an increased interest in new quantum algorithms to describe complex many-body systems searching for the still-elusive go…