179 citations · 403 across the 12 of their papers we have counts for
12 papers
Macromux: scalable postselection for high-threshold fault-tolerant quantum computation
Patrick Birchall, Jacob Bridgeman, Christopher Dawson +7
We introduce a new resource-efficient scheme for fault-tolerant quantum computation known as `macroscale multiplexing' (or simply `Macromux'), that utilizes scalable postselection…
Comparison of schemes for highly loss tolerant photonic fusion based quantum computing
Sara Bartolucci, Tom Bell, Hector Bombin +18
We summarize the performance of recently-proposed methods for achieving fault tolerant fusions-based quantum computation with high tolerance to qubit loss, specifically aimed at ph…
Switch networks for photonic fusion-based quantum computing
Sara Bartolucci, Patrick Birchall, Damien Bonneau +6
Fusion-based quantum computing (FBQC) offers a powerful approach to building a fault-tolerant universal quantum computer using photonic components -- single-photon sources, linear-…
Creation of Entangled Photonic States Using Linear Optics
Sara Bartolucci, Patrick M. Birchall, Mercedes Gimeno-Segovia +7
Using only linear optical elements, the creation of dual-rail photonic entangled states is inherently probabilistic. Known entanglement generation schemes have low success probabil…
Fusion-based quantum computation
Sara Bartolucci, Patrick Birchall, Hector Bombin +10
We introduce fusion-based quantum computing (FBQC) - a model of universal quantum computation in which entangling measurements, called fusions, are performed on the qubits of small…
Quantum Optical Metrology of Correlated Phase and Loss
Patrick M. Birchall, Euan J. Allen, Thomas M. Stace +3
Optical absorption measurements characterize a wide variety of systems from atomic gases to \emph{in-vivo} diagnostics of living organisms. Here we study the potential of non-class…
No imminent quantum supremacy by boson sampling
Alex Neville, Chris Sparrow, Raphaël Clifford +4
It is predicted that quantum computers will dramatically outperform their conventional counterparts. However, large-scale universal quantum computers are yet to be built. Boson sam…
Demonstrating an absolute quantum advantage in direct absorption measurement
Paul-Antoine Moreau, Javier Sabines-Chesterking, Rebecca Whittaker +5
Engineering apparatus that harness quantum theory offers practical advantages over current technology. A fundamentally more powerful prospect is the long-standing prediction that s…
Sub-shot-noise transmission measurement using optically gated single photons
J. Sabines-Chesterking, R. Whittaker, S. K. Joshi +7
Harnessing the unique properties of quantum mechanics offers the possibility to deliver new technologies that can fundamentally outperform their classical counterparts. These techn…
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…
Beating the Shot-Noise Limit with Sources of Partially-Distinguishable Photons
Patrick M. Birchall, Javier Sabines-Chesterking, Jeremy L. O'Brien +2
Quantum metrology promises high-precision measurements beyond the capability of any classical techniques, and has the potential to be integral to investigative techniques. However,…
The Quantum-Classical Boundary for Precision Interferometric Measurements
Patrick M. Birchall, Jeremy L. O'Brien, Jonathan C. F. Matthews +1
Understanding the fundamental limits on the precision to which an optical phase can be estimated is of key interest for many investigative techniques utilized across science and te…