8 citations · 25 across the 10 of their papers we have counts for
10 papers
Quantum Dynamical Emulation of Imaginary Time Evolution
Jacob M. Leamer, Alicia B. Magann, Denys I. Bondar +1
We introduce a constructive method for mapping non-unitary dynamics to a weighted set of unitary operations. We utilize this construction to derive a new correspondence between rea…
Spectral gaps of two- and three-dimensional many-body quantum systems in the thermodynamic limit
Illya V. Lukin, Andrii G. Sotnikov, Jacob M. Leamer +2
We present an expression for the spectral gap, opening up new possibilities for performing and accelerating spectral calculations of quantum many-body systems. We develop and demon…
Spectral Gaps via Imaginary Time
Jacob M. Leamer, Alicia B. Magann, Gerard McCaul +1
The spectral gap occupies a role of central importance in many open problems in physics. We present an approach for evaluating the spectral gap of a Hamiltonian from a simple ratio…
Robust Free-Space Optical Communication Utilizing Polarization
Nicholas J. Savino, Jacob M. Leamer, Ravi K. Saripalli +3
Free-space optical (FSO) communication can be subject to various types of distortion and loss as the signal propagates through non-uniform media. In experiment and simulation, we d…
Classical Optical Analogue of Quantum Discord
Jacob M. Leamer, Wenlei Zhang, Nicholas J. Savino +4
Quantum discord has been shown to be a resource for quantum advantage in addition to quantum entanglement. While many experiments have demonstrated classical analogies of entanglem…
Coherent Control of Evanescent Waves via Beam Shaping
Nicholas J. Savino, Jacob M. Leamer, Wenlei Zhang +3
Evanescent waves are central to many technologies such as near-field imaging that beats the diffraction limit and plasmonic devices. Frustrated total internal reflection (FTIR) is…
Positivity Preserving Density Matrix Minimization at Finite Temperatures via Square Root
Jacob M. Leamer, William Dawson, Denys I. Bondar
We present a Wave Operator Minimization (WOM) method for calculating the Fermi-Dirac density matrix for electronic structure problems at finite temperature while preserving physica…
All-optical input-agnostic polarization transformer via experimental Kraus-map control
Wenlei Zhang, Ravi K. Saripalli, Jacob M. Leamer +2
The polarization of light is utilized in many technologies throughout science and engineering. The ability to transform one state of polarization to another is a key enabling techn…
Experimental Violation of the Leggett-Garg Inequality Using the Polarization of Classical Light
Wenlei Zhang, Ravi K. Saripalli, Jacob M. Leamer +2
In contrast to Bell's inequalities which test the correlations between multiple spatially separated systems, the Leggett-Garg inequalities test the temporal correlations between me…
Robust polarimetry via convex optimization
Jacob M. Leamer, Wenlei Zhang, Ravi K. Saripalli +2
We present mathematical methods, based on convex optimization, for correcting non-physical coherency matrices measured in polarimetry. We also develop the method for recovering the…