activity
20162026
most citedMultiparameter estimation with single photons

33 citations · 124 across the 17 of their papers we have counts for

collaborators

17 papers

quant-ph2026

Satisfying Quantum Codes: Physics-Informed and Hardware-Aware Code Design with SAT Solvers

Ben DalFavero, William M. Watkins, Margarite L. LaBorde +4

Although quantum error correction is widely believed to be necessary for impactful applications of quantum computers, the design of quantum error correction codes is largely done b…

quant-ph2026

Leveraging Metrologically Useful States in Quantum Reservoir Networks

Erik L. Connerty, Margarite LaBorde, Ethan N. Evans

Interest in using quantum computers for the purpose of predicting chaotic partial differential equations (PDEs) has been growing with the advent of newer low-error quantum computer…

quant-ph2026

Symmetry-Based Quantum Codes Beyond the Pauli Group

Zachary P. Bradshaw, Margarite L. LaBorde, Dillon Montero

Typical stabilizer codes aim to solve the general problem of fault-tolerance without regard for the structure of a specific system. By incorporating a broader representation-theore…

quant-ph2025

A Closed Form for Moment-Based Entanglement Tests Associated to the PPT Criterion

Zachary P. Bradshaw, Margarite L. LaBorde

Neven et al. have explored an unexpected alliance between the mathematical insights of Sir Isaac Newton and René Descartes which culminates in the reduction of the Positive Partial…

quant-ph2024★ 3 cited

Learning Equivariant Maps with Variational Quantum Circuits

Zachary P. Bradshaw, Ethan N. Evans, Matthew Cook +1

Geometric quantum machine learning uses the symmetries inherent in data to design tailored machine learning tasks with reduced search space dimension. The field has been well-studi…

quant-ph2024

Quantum Algorithms for Realizing Symmetric, Asymmetric, and Antisymmetric Projectors

Margarite L. LaBorde, Soorya Rethinasamy, Mark M. Wilde

In quantum computing, knowing the symmetries a given system or state obeys or disobeys is often useful. For example, Hamiltonian symmetries may limit allowed state transitions or s…

quant-ph2024★ 6 cited

Logarithmic-Depth Quantum Circuits for Hamming Weight Projections

Soorya Rethinasamy, Margarite L. LaBorde, Mark M. Wilde

A pure state of fixed Hamming weight is a superposition of computational basis states such that each bitstring in the superposition has the same number of ones. Given a Hilbert spa…

quant-ph2024★ 4 cited

Learning with SASQuaTCh: a Novel Variational Quantum Transformer Architecture with Kernel-Based Self-Attention

Ethan N. Evans, Matthew Cook, Zachary P. Bradshaw +1

The recent exploding growth in size of state-of-the-art machine learning models highlights a well-known issue where exponential parameter growth, which has grown to trillions as in…

quant-ph2023★ 3 cited

Quantum Computational Complexity and Symmetry

Soorya Rethinasamy, Margarite L. LaBorde, Mark M. Wilde

Testing the symmetries of quantum states and channels provides a way to assess their usefulness for different physical, computational, and communication tasks. Here, we establish s…

quant-ph2023

Quantum Entanglement & Purity Testing: A Graph Zeta Function Perspective

Zachary P. Bradshaw, Margarite L. LaBorde

We assign an arbitrary density matrix to a weighted graph and associate to it a graph zeta function that is both a generalization of the Ihara zeta function and a special case of t…

quant-ph2023

A Menagerie of Symmetry Testing Quantum Algorithms

Margarite L. LaBorde

This thesis aims to establish notions of symmetry for quantum states and channels as well as describe algorithms to test for these properties on quantum computers. Ideally, the wor…

quant-ph2022★ 8 cited

Cycle Index Polynomials and Generalized Quantum Separability Tests

Zachary P. Bradshaw, Margarite L. LaBorde, Mark M. Wilde

The mixedness of one share of a pure bipartite state determines whether the overall state is a separable, unentangled state. Here we consider quantum computational tests of mixedne…

quant-ph2022★ 11 cited

Quantum Algorithms for Testing Hamiltonian Symmetry

Margarite L. LaBorde, Mark M. Wilde

Symmetries in a Hamiltonian play an important role in quantum physics because they correspond directly with conserved quantities of the related system. In this paper, we propose qu…

quant-ph2021★ 16 cited

Testing symmetry on quantum computers

Margarite L. LaBorde, Soorya Rethinasamy, Mark M. Wilde

Symmetry is a unifying concept in physics. In quantum information and beyond, it is known that quantum states possessing symmetry are not useful for certain information-processing…

quant-ph2020★ 9 cited

Finding Broken Gates in Quantum Circuits---Exploiting Hybrid Machine Learning

Margarite L. LaBorde, Allee C. Rogers, Jonathan P. Dowling

Current implementations of quantum logic gates can be highly faulty and introduce errors. In order to correct these errors, it is necessary to first identify the faulty gates. We d…

quant-ph2017★ 33 cited

Multiparameter estimation with single photons

Chenglong You, Sushovit Adhikari, Yuxi Chi +8

It was suggested in Ref. [Phys. Rev. Lett. 114, 170802] that optical networks with relatively inexpensive overhead---single photon Fock states, passive optical elements, and single…

quant-ph2016★ 31 cited

Linear optical quantum metrology with single photons --- Experimental errors, resource counting, and quantum Cramér-Rao bounds

Jonathan P. Olson, Keith R. Motes, Patrick M. Birchall +5

Quantum number-path entanglement is a resource for super-sensitive quantum metrology and in particular provides for sub-shotnoise or even Heisenberg-limited sensitivity. However, s…