Gaussian boson sampling using threshold detectors

Physical review. A/Physical review, A, Journal Year: 2018, Volume and Issue: 98(6)

Published: Dec. 18, 2018

We study what is arguably the most experimentally appealing boson sampling architecture: Gaussian states sampled with threshold detectors. show that, in this setting, probability of observing a given outcome related to matrix function that we name Torontonian, which plays an analogous role permanent or Hafnian other models. also prove provided two more photons single output mode sufficiently small, our model remains intractable simulate classically under standard complexity-theoretic conjectures. Finally, leverage mathematical simplicity introduce physically motivated, exact algorithm for all models employ and

Language: Английский

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Quantum Information and Algorithms for Correlated Quantum Matter

Chemical Reviews, Journal Year: 2020, Volume and Issue: 121(5), P. 3061 - 3120

Published: Dec. 16, 2020

Discoveries in quantum materials, which are characterized by the strongly quantum-mechanical nature of electrons and atoms, have revealed exotic properties that arise from correlations. It is promise materials for information science superimposed with potential new computational algorithms to discover inspires this Review. We anticipate be discovered developed next years will transform areas processing including communication, storage, computing. Simultaneously, efforts toward developing algorithmic approaches simulation advanced calculation methods many-body systems enable major advances functional their deployment. The advent computing brings possibilities eliminating exponential complexity has stymied correlated on high-performance classical computers. Here, we review predict understand behavior matter. interdisciplinary topics covered necessitates a common language integrate ideas these fields. aim provide while weaving together fields across electronic structure theory, electrodynamics, algorithm design, open systems. Our Review timely presenting state-of-the-art field nonexponential matter applications grand-challenge problems. Looking future, at intersection matter, envision seminal predicting states describing excitonic large-scale entangled states, better understanding high-temperature superconductivity, quantifying system dynamics.

Language: Английский

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High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges

Advanced Quantum Technologies, Journal Year: 2019, Volume and Issue: 2(12)

Published: Oct. 15, 2019

In recent years, there has been a rising interest in high-dimensional quantum states and their impact on communication. Indeed, the availability of an enlarged Hilbert space offers multiple advantages, from larger information capacity increased noise resilience, to novel fundamental research possibilities physics. Multiple photonic degrees freedom have explored generate states, both with bulk optics integrated photonics. Furthermore, these propagated through various channels, \textit{e.g.} free-space links, single-mode, multicore, multimode fibers also aquatic experimentally demonstrating theoretical advantages over two-dimensional systems. Here, we review state art generation, propagation detection states.

Language: Английский

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Applications of near-term photonic quantum computers: software and algorithms

Quantum Science and Technology, Journal Year: 2020, Volume and Issue: 5(3), P. 034010 - 034010

Published: April 1, 2020

Gaussian Boson Sampling (GBS) is a near-term platform for photonic quantum computing. Recent efforts have led to the discovery of GBS algorithms with applications graph-based problems, point processes, and molecular vibronic spectra in chemistry. The development dedicated software key enabler permitting users program devices implement algorithms. In this work, we introduce new layer Strawberry Fields computing library. provides necessary tools design using only few lines code. This paper serves dual role as an introduction software, supported example code, also review current state art

Language: Английский

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A universal fully reconfigurable 12-mode quantum photonic processor

Materials for Quantum Technology, Journal Year: 2021, Volume and Issue: 1(3), P. 035002 - 035002

Published: July 21, 2021

Abstract Photonic processors are pivotal for both quantum and classical information processing tasks using light. In particular, linear optical requires large-scale low-loss programmable photonic processors. this paper, we report the demonstration of largest universal processor to date: a 12-mode fully tunable interferometer with all-to-all mode coupling based on stoichiometric silicon nitride waveguides.

Language: Английский

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