output
20102023
most citedLong short-term memory networks in memristor crossbars

400 citations

Showing quant-phShow all

23 papers · 1 filter

quant-ph2021

Gaussian Amplitude Amplification for Quantum Pathfinding

Daniel Koch, Massimiliano Cutugno, Samuel Karlson +3

We study an oracle operation, along with its circuit design, which combined with the Grover diffusion operator boosts the probability of finding minimum or maximum solutions on a w…

quant-ph2020★ 6 cited

Information Geometric Aspects of Probability Paths with Minimum Entropy Production for Quantum State Evolution

Steven Gassner, Carlo Cafaro, Sean A. Ali +1

We present an information geometric analysis of both entropic speeds and entropy production rates arising from geodesic evolution on manifolds parametrized by pure quantum states.…

quant-ph2020★ 19 cited

Quantifying Tri-partite Entanglement with Entropic Correlations

James Schneeloch, Christopher C. Tison, Michael L. Fanto +2

We show how to quantify tri-partite entanglement using entropies derived from experimental correlations. We use a multi-partite generalization of the entanglement of formation that…

quant-ph2020★ 5 cited

Vector Properties of Entanglement in a Three-Qubit System

Dmitry B. Uskov, Paul M. Alsing

We suggest a dynamical vector model of entanglement in a three qubit system based on isomorphism between and Lie algebras. Generalizing Plücker-type description of…

quant-ph2020★ 23 cited

Demonstrating NISQ Era Challenges in Algorithm Design on IBM's 20 Qubit Quantum Computer

Daniel Koch, Brett Martin, Saahil Patel +2

As superconducting qubits continue to advance technologically, the realization of quantum algorithms from theoretical abstraction to physical implementation requires knowledge of b…

quant-ph2019★ 7 cited

Phase effects in coherently-stimulated down-conversion with a quantized pump field

Richard J. Birrittella, Paul M. Alsing, Christopher C. Gerry

We investigate the effect of the cumulative phase on the photon statistics of the three-mode state whose evolution is described by the trilinear Hamiltonian $\hat{H}_{I}=i\hbarκ\bi…

quant-ph2019★ 1 cited

A tripartite entanglement in de Sitter spacetime

Sang-Eon Bak, Paul M. Alsing, Warner A. Miller +2

We investigate the quantum correlation for tripartite entangled states in de Sitter space. First, we adopt the noisy quantum channel model. In this model, the expansion effect is r…

quant-ph2019★ 17 cited

A scalable Controlled NOT gate for linear optical computing using microring resonators

Ryan E. Scott, Paul M. Alsing, A. Matthew Smith +5

We propose a scalable version of a KLM CNOT gate based upon integrated waveguide microring resonators (MRR), vs the original KLM-approach using beam splitters (BS). The core elemen…

quant-ph2019★ 10 cited

Theoretical analysis of a nearly optimal analog quantum search

Carlo Cafaro, Paul M. Alsing

We analyze the possibility of modifying the original Farhi-Gutmann Hamiltonian algorithm in order to speed up the procedure for producing a suitably distributed unknown normalized…

quant-ph2019★ 2 cited

Quantum Reactivity: A Measure of Quantum Correlation

Shahabeddin Mostafanazhad Aslmarand, Warner A. Miller, Paul M. Alsing +1

Defining a robust measure of quantum correlation for multipartite states is an unresolved and challenging problem. Existing measures of quantum correlation are either not scalable…

quant-ph2018★ 4 cited

Scattering Quantum Random Walks on Square Grids and Randomly Generated Mazes

Daniel Koch

The Scattering Quantum Random Walk scheme has found success as a basis for search algorithms on highly symmetric graph structures. In this paper we examine its effectiveness at loc…

quant-ph2018★ 90 cited

Introduction to the Absolute Brightness and Number Statistics in Spontaneous Parametric Down-Conversion

James Schneeloch, Samuel H. Knarr, Daniela F. Bogorin +6

As a tutorial, we examine the absolute brightness and number statistics of photon pairs generated in Spontaneous Parametric Down-Conversion (SPDC) from first principles. In doing s…

quant-ph2018★ 19 cited

Decrease of Fisher information and the information geometry of evolution equations for quantum mechanical probability amplitudes

Carlo Cafaro, Paul M. Alsing

The relevance of the concept of Fisher information is increasing in both statistical physics and quantum computing. From a statistical mechanical standpoint, the application of Fis…

quant-ph2018★ 55 cited

Quantifying entanglement in a 68-billion dimensional quantum state space

James Schneeloch, Christopher C. Tison, Michael L. Fanto +2

Entanglement is the powerful and enigmatic resource central to quantum information processing, which promises capabilities in computing, simulation, secure communication, and metro…

quant-ph2017★ 50 cited

Quantifying high-dimensional entanglement with Einstein-Podolsky-Rosen correlations

James Schneeloch, Gregory A. Howland

Quantifying entanglement in a quantum system generally requires a complete quantum tomography followed by the NP-hard computation of an entanglement monotone --- requirements that…

quant-ph2017★ 14 cited

Photon pair generation in a lossy microring resonator. I. Theory

Paul M. Alsing, Edwin E. Hach

We investigate entangled photon pair generation in a lossy microring resonator using an input-output formalism based on the work of Raymer and McKinstrie (Phys. Rev. A 88, 043819 (…

quant-ph2016★ 15 cited

A quantum optical description of losses in ring resonators based on field operator transformations

Paul M. Alsing, Edwin E. Hach, Christopher C. Tison +1

In this work we examine loss in ring resonator networks from an "operator valued phasor addition" approach (or OVPA approach) which considers the multiple transmission and cross co…

quant-ph2015★ 7 cited

Position-Momentum Bell-Nonlocality with Entangled Photon Pairs

James Schneeloch, Samuel H. Knarr, Daniel J. Lum +1

Witnessing continuous-variable Bell nonlocality is a challenging endeavor, but Bell himself showed how one might demonstrate this nonlocality. Though Bell nearly showed a violation…

quant-ph2015★ 139 cited

Introduction to the Transverse Spatial Correlations in Spontaneous Parametric Down-Conversion through the Biphoton Birth Zone

James Schneeloch, John C. Howell

As a tutorial to the spatial aspects of Spontaneous Parametric Downconversion (SPDC), we present a detailed first-principles derivation of the transverse correlation width of photo…

quant-ph2013★ 31 cited

Tunneling through a parabolic barrier viewed from Wigner phase space

D. M. Heim, W. P. Schleich, P. M. Alsing +2

We analyze the tunneling of a particle through a repulsive potential resulting from an inverted harmonic oscillator in the quantum mechanical phase space described by the Wigner fu…

quant-ph2012★ 131 cited

Observer dependent entanglement

Paul M. Alsing, Ivette Fuentes

Understanding the observer-dependent nature of quantum entanglement has been a central question in relativistic quantum information. In this paper we will review key results on rel…

quant-ph2012★ 1 cited

Proposed Experiment in Two-Qubit Linear Optical Photonic Gates for Maximal Success Rates

A. Matthew Smith, D. B. Uskov, M. Fanto +2

Here we propose an experiment in Linear Optical Quantum Computing (LOQC) using the framework first developed by Knill, Laflamme, and Milburn. This experiment will test the ideas of…

quant-ph2011★ 3 cited

Imperfect Linear Optical Photonic Gates with Number-Resolving Photodetection

A. Matthew Smith, D. B. Uskov, L. H. Ying +1

We use the numerical optimization techniques of Uskov et al. [PRA 81, 012303 (2010)] to investigate the behavior of the success rates for KLM style [Nature 409, 46 (2001)] two- and…