Jacob F. F. Bulmer

Simulating lossy and partially distinguishable quantum optical circuits: theory, algorithms, and applications to experiment validation and state preparation

Jacob F. F. Bulmer, Javier Martínez-Cifuentes, Bryn A. Bell, Nicolás Quesada

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An Integrated Source of Pure Single Mode Squeezing

Edward Deacon, Alexandre Maïnos, Jacob F. F. Bulmer, M K Thomas et autres

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A complexity transition in displaced Gaussian Boson sampling

Zhenghao Li, Naomi R. Solomons, Jacob F. F. Bulmer, Raj B. Patel et autres

Abstract Gaussian Boson Sampling (GBS) is the problem of sampling from the output of photon-number-resolving measurements of squeezed states input to a linear optical interferometer. For purposes of demonstrating quantum computational advantage as well as practical applications, a large photon number is …

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Comparison of schemes for highly loss tolerant photonic fusion based quantum computing

Sara Bartolucci, T. N. Bell, Héctor Bombín, Patrick M. Birchall et autres

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 photonic implementations.

Simulating lossy and partially distinguishable quantum optical circuits: theory, algorithms and applications to experiment validation and state preparation

Jacob F. F. Bulmer, Javier Martínez-Cifuentes, Bryn A. Bell, Nicolás Quesada

To understand quantum optics experiments, we must perform calculations that consider the principal sources of noise, such as losses, spectral impurity and partial distinguishability. In both discrete and continuous variable systems, these can be modeled as mixed Gaussian states over multiple modes. …

On-Chip Quantum Information Processing with Distinguishable Photons

Patrick Yard, Alex E. Jones, Stefano Paesani, Alexandre Maïnos et autres

Multiphoton interference is at the heart of photonic quantum technologies. Arrays of integrated cavities can support bright sources of single photons with high purity and small footprint, but the inevitable spectral distinguishability between photons generated from nonidentical cavities is an obstacle to …

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Quantum simulation of thermodynamics in an integrated quantum photonic processor

F. H. B. Somhorst, Reinier van der Meer, Malaquias Correa Anguita, R. Schadow et autres

One of the core questions of quantum physics is how to reconcile the unitary evolution of quantum states, which is information-preserving and time-reversible, with evolution following the second law of thermodynamics, which, in general, is neither. The resolution to this paradox is …

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Threshold detection statistics of bosonic states

Jacob F. F. Bulmer, Stefano Paesani, Rachel S. Chadwick, Nicolás Quesada

In quantum photonics, threshold detectors, distinguishing between vacuum and one or more photons, such as superconducting nanowires and avalanche photodiodes, are routinely used to measure Fock and Gaussian states of light. Despite being the standard measurement scheme, there is no general closed …

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On-chip quantum information processing with distinguishable photons

Patrick Yard, Alex E. Jones, Stefano Paesani, Alexandre Maïnos et autres

Multi-photon interference is at the heart of photonic quantum technologies. Arrays of integrated cavities can support bright sources of single-photons with high purity and small footprint, but the inevitable spectral distinguishability between photons generated from non-identical cavities is an obstacle to scaling. …

Quantum computational advantage with a programmable photonic processor

Lars S. Madsen, Fabian Laudenbach, Mohsen Falamarzi. Askarani, Fabien Rortais et autres

Abstract A quantum computer attains computational advantage when outperforming the best classical computers running the best-known algorithms on well-defined tasks. No photonic machine offering programmability over all its quantum gates has demonstrated quantum computational advantage: previous machines 1,2 were largely restricted to …

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Threshold detection statistics of bosonic states

Jacob F. F. Bulmer, Stefano Paesani, Rachel S. Chadwick, Nicolás Quesada

In quantum photonics, threshold detectors, distinguishing between vacuum and one or more photons, such as superconducting nanowires and avalanche photodiodes, are routinely used to measure Fock and Gaussian states of light. Despite being the standard measurement scheme, there is no general closed …

The boundary for quantum advantage in Gaussian boson sampling

Jacob F. F. Bulmer, Bryn A. Bell, Rachel S. Chadwick, Alex E. Jones et autres

Identifying the boundary beyond which quantum machines provide a computational advantage over their classical counterparts is a crucial step in charting their usefulness. Gaussian boson sampling (GBS), in which photons are measured from a highly entangled Gaussian state, is a leading approach …

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