activity
20112026
most citedTruly unentangled photon pairs without spectral filtering

118 citations · 489 across the 27 of their papers we have counts for

collaborators

28 papers

quant-ph2026

Dynamic distributed quantum sensing of radio-frequency fields via time-bin entanglement

Vedansh Nehra, Richard Birrittella, Benjamin Malia +6

We propose a novel framework for discrete-variable (DV) distributed quantum sensing, wherein traditional polarization-based probes are replaced with time-bin entangled qubits. We s…

quant-ph2026

Photonic qubit encoding interconversion for heterogeneous quantum networking

Vedansh Nehra, Richard J. Birrittella, Christopher C. Tison +10

Quantum information processing, communication, and sensing networks are being developed with various qubit platforms that use different encoding schemes. Connecting quantum network…

quant-ph2025

Telecommunications fiber-optic and free-space quantum local area networks at the Air Force Research Laboratory

Erin Sheridan, Nicholas J. Barton, Richard Birrittella +29

As quantum computing, sensing, timing, and networking technologies mature, quantum network testbeds are being deployed across the United States and around the world. To support the…

quant-ph2025

Frequency auto-homogenization using group-velocity-matched downconversion

Dylan Heberle, Christopher C. Tison, James Schneeloch +4

With the stability of integrated photonics at network nodes and the advantages of photons as flying qubits, photonic quantum information processing (PQIP) makes quantum networks in…

quant-ph2024

Verifying Energy-Time Entanglement with Irregularly Sampled Correlations

James Schneeloch, Christopher C. Tison, Richard J. Birrittella +3

Verifying entanglement with experimental measurements requires that we take the limitations of experimental techniques into account, while still proving that the data obtained coul…

quant-ph2024

Bypassing the filtering challenges in microwave-optical quantum transduction through optomechanical four-wave mixing

James Schneeloch, Erin Sheridan, A. Matthew Smith +5

Microwave-optical quantum transduction is a key enabling technology in quantum networking, but has been plagued by a formidable technical challenge. As most microwave-optical-trans…

quant-ph2024

Low-Crosstalk, Silicon-Fabricated Optical Waveguides for Laser Delivery to Matter Qubits

Clayton L. Craft, Nicholas J. Barton, Andrew C. Klug +30

Reliable control of quantum information in matter-based qubits requires precisely applied external fields, and unaccounted for spatial cross-talk of these fields between adjacent q…

quant-ph2023★ 2 cited

Principles for Optimizing Quantum Transduction in Piezo-Optomechanical Systems

James Schneeloch, Erin Sheridan, A. Matthew Smith +5

Two-way microwave-optical quantum transduction is essential to connecting distant superconducting qubits via optical fiber, and to enable quantum networking at a large scale. In Bl…

quant-ph2023

Nonlinear optics as a source of high-dimensional genuine tripartite entanglement

James Schneeloch, Richard J. Birrittella, Christopher C. Tison +3

We lay down a general scheme to quantify the amount of genuine tripartite entanglement present in the spatial and energy-time degrees of freedom of entangled photon triplets using…

quant-ph2022★ 2 cited

Unconditional remote entanglement using second-harmonic generation and twin two-mode squeezed vacuum states

Richard J. Birrittella, James Schneeloch, Christopher C. Tison +3

We propose a photonics-based, continuous-variable (CV) form of remote entanglement utilizing strictly second-order nonlinear optical interactions that does not require the implemen…

quant-ph2022

The distribution of density matrices at fixed purity for arbitrary dimensions

Paul M. Alsing, Christopher C. Tison, James Schneeloch +2

We present marginal cumulative distribution functions (CDF) for density matrices of fixed purity for arbitrary dimension . We g…

cs.ET2022

Massively Scalable Wavelength Diverse Integrated Photonic Linear Neuron

Matthew van Niekerk, Anthony Rizzo, Hector Rubio Rivera +6

As computing resource demands continue to escalate in the face of big data, cloud-connectivity and the internet of things, it has become imperative to develop new low-power, scalab…

quant-ph2021★ 4 cited

Quantifying Tripartite Spatial and Energy-Time Entanglement in Nonlinear Optics

James Schneeloch, Richard J. Birrittella, Christopher C. Tison +3

In this work, we provide a means to quantify genuine tripartite entanglement in arbitrary (pure and mixed) continuous-variable states as measured by the Tripartite Entanglement of…

quant-ph2020★ 7 cited

Negativity vs. Purity and Entropy in Witnessing Entanglement

James Schneeloch, H Shelton Jacinto, Christopher C. Tison +1

In this work, we show that while all measures of mixedness may be used to witness entanglement, all such entangled states must have a negative partial transpose (NPT). Though compu…

physics.optics2020★ 9 cited

Two-dimensional extreme skin depth engineering for CMOS photonics

Matthew van Niekerk, Saman Jahani, Justin Bickford +9

Extreme skin depth engineering (e-skid) can be applied to integrated photonics to manipulate the evanescent field of a waveguide. Here we demonstrate that e-skid can be implemented…

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★ 4 cited

Nonlinear Photon Pair Generation in a Highly Dispersive Medium

David J. Starling, Jacob Poirier, Michael Fanto +4

Photon pair generation in silicon photonic integrated circuits relies on four wave mixing via the third order nonlinearity. Due to phase matching requirements and group velocity di…

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

The maximum advantage of quantum illumination

Shannon Ray, James Schneeloch, Christopher C. Tison +1

Discriminating between quantum states is a fundamental problem in quantum information protocols. The optimum approach saturates the Helstrom bound, which quantifies the unavoidable…

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★ 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

Central Moment Analogues to Linear Optically Generated Cluster States

Christopher C. Tison, James Schneeloch, Paul M. Alsing

Two-mode squeezed states in the limit of small squeezing, Hong-Ou-Mandel interference and post selection on coincidence counts are some of the staples of linear quantum optics. We…

physics.optics2017★ 118 cited

Truly unentangled photon pairs without spectral filtering

Z. Vernon, M. Menotti, C. C. Tison +8

We demonstrate that an integrated silicon microring resonator is capable of efficiently producing photon pairs that are completely unentangled; such pairs are a key component of he…

quant-ph2017★ 44 cited

The Path to Increasing the Coincidence Efficiency of Integrated Photon Sources

C. C. Tison, J. A. Steidle, M. L. Fanto +5

Silicon ring resonators are used as photon pair sources by taking advantage of silicon's large third order nonlinearity with a process known as spontaneous four wave mixing. These…