activity
20222026
most citedEnhanced-sensitivity interferometry with phase-sensitive unbiased multiports

14 citations · 50 across the 11 of their papers we have counts for

collaborators

11 papers

quant-ph2026

Deterministic linear-optical computing with symmetry-based qubits

David S. Simon, Christopher R. Schwarze, Anthony D. Manni +2

A particular type of linear optical multiport, the Grover four-port, has previously been shown to couple the spatial symmetry of a photon to its direction of travel. It is shown he…

quant-ph2025★ 1 cited

Strain sensitivity enhancement in a Grover-Michelson interferometer

Anthony D. Manni, Christopher R. Schwarze, David S. Simon +2

The Michelson interferometric phase detection resolution can be enhanced by replacing conventional beam splitters with novel directionally unbiased four-port scatterers, such as Gr…

physics.optics2025

Next-generation interferometry with gauge-invariant linear optical scatterers

Christopher R. Schwarze, Anthony D. Manni, David S. Simon +2

Measurement technology employing optical interference phenomena such as a fringe pattern or frequency shift has been evolving for more than a century. The systems are being designe…

physics.optics2025

Scalar computational primitives with perturbative phase interferometry

Christopher R. Schwarze, Anthony D. Manni, David S. Simon +1

We describe how weak phase modulations applied to classical coherent light in specially modified linear interferometers can be used to perform primitive computational tasks. Instea…

quant-ph2024★ 10 cited

Experimental demonstration of a Grover-Michelson interferometer

Christopher R. Schwarze, David S. Simon, Anthony D. Manni +2

We present a low-resource and robust optical implementation of the four-dimensional Grover coin, a four-port linear-optical scatterer that augments the low dimensionality of a regu…

quant-ph2024★ 6 cited

Single-photon description of the lossless optical Y coupler

Christopher R. Schwarze, Anthony D. Manni, David S. Simon +1

Using symmetry considerations, we derive a unitary scattering matrix for a three-port optical Y-coupler or Y-branch. The result is shown to be unique up to external phase shifts. U…

quant-ph2024★ 2 cited

Exceptional points in SSH-like models with hopping amplitude gradient

David S. Simon, Christopher R. Schwarze, Abdoulaye Ndao +1

The Su-Schrieffer-Heeger (SSH) system is a popular model for exploring topological insulators and topological phases in one dimension. Recent interest in exceptional points has led…

quant-ph2024★ 4 cited

Finite-element assembly approach of optical quantum walk networks

Christopher R. Schwarze, David S. Simon, Anthony D. Manni +2

We present a finite-element approach for computing the aggregate scattering matrix of a network of linear coherent scatterers. These might be optical scatterers or more general sca…

physics.optics2024★ 2 cited

Tunable linear-optical phase amplification

Christopher R. Schwarze, David S. Simon, Abdoulaye Ndao +1

We combine lossless, phase-only transformations with fully-transmitting linear-optical scatterers to define the principle of linear-optical phase amplification. This enables a phys…

quant-ph2023★ 14 cited

Enhanced-sensitivity interferometry with phase-sensitive unbiased multiports

Christopher R. Schwarze, David S. Simon, Alexander V. Sergienko

Here we introduce interferometric devices by combining optical feedback (cavities) with unbiased multiports, which unlike traditional beam dividers, allow light to reflect back out…

quant-ph2022★ 11 cited

Interferometry and higher-dimensional phase measurements using directionally unbiased linear optics

David S. Simon, Christopher R. Schwarze, Alexander V. Sergienko

Grover multiports are higher-dimensional generalizations of beam splitters, in which input to any one of the four ports has equal probability of exiting at any of the same four por…