Generation and characterization of ultrabroadband polarization–frequency hyperentangled photons

HH Lu, M Alshowkan, KV Myilswamy, AM Weiner… - Optics Letters, 2023 - opg.optica.org
We generate ultrabroadband photon pairs entangled in both polarization and frequency bins
through an all-waveguided Sagnac source covering the entire optical C-and L-bands (1530 …

CMOS photonic integrated source of broadband polarization-entangled photons

A Miloshevsky, LM Cohen, KV Myilswamy… - Optica …, 2024 - opg.optica.org
We showcase a fully on-chip CMOS-fabricated silicon photonic integrated circuit employing
a bidirectionally pumped microring and polarization splitter-rotators tailored for the …

Entanglement-based quantum digital signatures over a deployed campus network

JC Chapman, M Alshowkan, B Qi, NA Peters - Optics Express, 2024 - opg.optica.org
The quantum digital signature protocol offers a replacement for most aspects of public-key
digital signatures ubiquitous in today's digital world. A major advantage of a quantum-digital …

High-rate multiplexed entanglement source based on time-bin qubits for advanced quantum networks

A Mueller, SI Davis, B Korzh, R Valivarthi, AD Beyer… - Optica …, 2024 - opg.optica.org
Entanglement distribution based on time-bin qubits is an attractive option for emerging
quantum networks. We demonstrate a 4.09-GHz repetition rate source of photon pairs …

Building a controlled-NOT gate between polarization and frequency

HH Lu, JM Lukens, M Alshowkan, BT Kirby… - Optica …, 2024 - opg.optica.org
By harnessing multiple degrees of freedom (DoFs) within a single photon, controlled
quantum unitaries, such as the two-qubit controlled-NOT (cnot) gate, play a pivotal role in …

On-chip frequency-bin quantum photonics

KV Myilswamy, LM Cohen, S Seshadri, HH Lu… - …, 2025 - degruyter.com
Frequency-bin encoding furnishes a compelling pathway for quantum information
processing systems compatible with established lightwave infrastructures based on fiber …

Resilient entanglement distribution in a multihop quantum network

M Alshowkan, JM Lukens, HH Lu, NA Peters - arxiv preprint arxiv …, 2024 - arxiv.org
The evolution of quantum networking requires architectures capable of dynamically
reconfigurable entanglement distribution to meet diverse user needs and ensure tolerance …

Deployed quantum link characterization via bayesian ancilla-assisted process tomography

A Rahman, NI Wasserbeck, Z Goisman… - arxiv preprint arxiv …, 2024 - arxiv.org
The development of large-scale quantum networks requires reliable quantum channels, the
quality of which can be quantified by the framework of quantum process tomography. In this …

Procrustean entanglement concentration in quantum-classical networking

HH Lu, M Alshowkan, J Alnas, JM Lukens… - Physical Review Applied, 2024 - APS
The success of a future quantum internet will rest in part on the ability of quantum and
classical signals to coexist in the same optical fiber infrastructure, a challenging endeavor …

Single-pass generation of widely-tunable frequency-domain entangled photon pairs

M Hojo, K Tanaka - Optics Express, 2024 - opg.optica.org
We demonstrate a technique that generates frequency-entangled photon pairs with strong
polarization correlation by using a single-period nonlinear crystal and single pass …