A5087651196- Quantum Computing Algorithms and Architecture
- Quantum Information and Cryptography
- Quantum and electron transport phenomena
- Quantum many-body systems
- Photochromic and Fluorescence Chemistry
- Spectroscopy and Quantum Chemical Studies
- Quantum-Dot Cellular Automata
- Cold Atom Physics and Bose-Einstein Condensates
- Photoreceptor and optogenetics research
- Perovskite Materials and Applications
- Random lasers and scattering media
- Quantum Mechanics and Applications
- Photoacoustic and Ultrasonic Imaging
- Mechanical and Optical Resonators
- Molecular Junctions and Nanostructures
- Atomic and Subatomic Physics Research
- Advanced Chemical Physics Studies
- Social and Educational Sciences
- Advanced Memory and Neural Computing
- Advanced Fluorescence Microscopy Techniques
University of Chicago
2023-2025
University of Louisville
2021-2023
Hybrid quantum-classical computing algorithms offer significant potential for accelerating the calculation of electronic structure strongly correlated molecules. In this work, we present first quantum simulation conical intersections (CIs) in a biomolecule, cytosine, using superconducting computer. We apply contracted eigensolver (CQE)─with comparisons to conventional variational deflation (VQD)─to compute near-degenerate ground and excited states associated with intersection, key feature...
Classical shadow tomography provides a randomized scheme for approximating the quantum state and its properties at reduced computational cost with applications in computing. In this Letter we present an algorithm realizing fewer measurements of many-body systems. Accelerated two-body density matrix (2-RDM) is achieved by combining classical shadows necessary constraints 2-RDM to represent N-body system, known as N-representability conditions. We compute ground-state energies 2-RDMs hydrogen...
Here we show that shadow tomography can generate an efficient and exact ansatz for the many-fermion wave function on quantum devices. We derive -- a product of transformations applied to mean-field by exploiting critical link between measurement preparation. Each transformation is obtained measuring classical residual contracted Schr\"odinger equation (CSE), many-electron (SE) projected onto space two electrons. shadows CSE vanish if only satisfies SE and, hence, randomly sampling...
Quantum sensing has highly practical potential applications in fields ranging from fundamental physics and quantum communication to biophysics bioengineering. However, achieving high fidelity control of entangled qubits that enables beyond the limit is still a challenging endeavor. In this paper, we present an alternative approach sensing, which call open-system where exploit generalization Pauli exclusion principle sense openness multiqubit system only measurement qubit occupations. Qubit...
Difference approaches to the study of excited states have undergone a renaissance in recent years, with development plethora algorithms for locating self-consistent field approximations states. Density functional theory is likely offer best balance cost and accuracy difference approaches, yet there has been little investigation how parametrization density affects performance. In this work, we aim explore role global Hartree-Fock exchange parameter tuning different excitation types within...
Scanning tunneling microscopy tip-induced deprotonation has been demonstrated experimentally and can be used as an additional control mechanism in electric-field induced molecular switching. The goal of the current work is to establish whether (de)protonation inhibit or enhance electric field controlled thermal photoisomerization processes. Dihydroxyazobenzene a model system, where protonation/deprotonation free hydroxyl moiety changes azo bond order, so modifies rate isomerization. Through...
Azoheteroarenes are relatively new photoswitchable compounds, where one of the phenyl rings an azobenzene molecule is replaced by a heteroaromatic five-membered ring. Recent findings on methylated azoheteroarenes show that these photoswitches have potential in various optically addressable applications. The thermal stability molecular switches primary factors considered design process. For memory or energy storage devices, long relaxation times required. However, inducing short isomerization...
Accurate models for open quantum systems -- states that have non-trivial interactions with their environment may aid in the advancement of a diverse array fields, including computation, informatics, and prediction static dynamic molecular properties. In recent years, algorithms been leveraged computation as predicted advantage devices over classical ones allow previously inaccessible applications. Accomplishing this goal will require input expertise from different research perspectives, well...
Excited-state properties of highly correlated systems are key to understanding photosynthesis, luminescence, and the development novel optical materials, but accurately capturing their interactions is computationally costly. We present an algorithm that combines classical shadow tomography with physical constraints on two-electron reduced density matrix (2-RDM) treat excited states. The method reduces number measurements many-electron 2-RDM quantum computers by (i) approximating state...
Excited-state properties of highly correlated systems are key to understanding photosynthesis, luminescence, and the development novel optical materials, but accurately capturing their interactions is computationally costly. We present an algorithm that combines classical shadow tomography with physical constraints on two-electron reduced density matrix (2RDM) treat excited states. The method reduces number measurements many-electron 2RDM quantum computers by (i) approximating state through...
Hybrid quantum-classical computing algorithms offer significant potential for accelerating the calculation of electronic structure strongly correlated molecules. In this work, we present first quantum simulation conical intersections (CIs) in a biomolecule, cytosine, using superconducting computer. We apply Contracted Quantum Eigensolver (CQE) -- with comparisons to conventional Variational Deflation (VQD) compute near-degenerate ground and excited states associated intersection, key feature...
Abstract The Pauli exclusion principle governs the fundamental structure and function of fermionic systems from molecules to materials. Nonetheless, when such a system is in pure state, it subject additional restrictions known as generalized constraints (GPCs). Here we verify experimentally violation GPCs for an open quantum using data superconducting-qubit computer. We prepare states with three-to-seven qubits directly on device measure one-fermion reduced density matrix (1-RDM) which can...
Classical shadow tomography provides a randomized scheme for approximating the quantum state and its properties at reduced computational cost with applications in computing. In this Letter we present an algorithm realizing fewer measurements of many-body systems by imposing $N$-representability constraints. Accelerated two-body density matrix (2-RDM) is achieved combining classical shadows necessary constraints 2-RDM to represent $N$-body system, known as conditions. We compute ground-state...