Abstract
| Original language | English |
|---|---|
| Article number | 023836 |
| Journal | Physical Review A |
| Volume | 99 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 19 Feb 2019 |
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Benchmarking of Gaussian boson sampling using two-point correlators. / Phillips, D. S.; Walschaers, M.; Renema, J. J.; Walmsley, I. A.; Treps, N.; Sperling, J.
In: Physical Review A, Vol. 99, No. 2, 023836, 19.02.2019.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Benchmarking of Gaussian boson sampling using two-point correlators
AU - Phillips, D. S.
AU - Walschaers, M.
AU - Renema, J. J.
AU - Walmsley, I. A.
AU - Treps, N.
AU - Sperling, J.
PY - 2019/2/19
Y1 - 2019/2/19
N2 - Gaussian boson sampling is a promising scheme for demonstrating a quantum computational advantage using photonic states that are accessible in a laboratory and, thus, offer scalable sources of quantum light. In this contribution, we study two-point photon-number correlation functions to gain insight into the interference of Gaussian states in optical networks. We investigate the characteristic features of statistical signatures which enable us to distinguish classical from quantum interference. In contrast to the typical implementation of boson sampling, we find additional contributions to the correlators under study which stem from the phase dependence of Gaussian states and which are not observable when Fock states interfere. Using the first three moments, we formulate the tools required to experimentally observe signatures of quantum interference of Gaussian states using two outputs only. By considering the current architectural limitations in realistic experiments, we further show that a statistically significant discrimination between quantum and classical interference is possible even in the presence of loss, noise, and a finite photon-number resolution. Therefore, we formulate and apply a theoretical framework to benchmark the quantum features of Gaussian boson sampling under realistic conditions.
AB - Gaussian boson sampling is a promising scheme for demonstrating a quantum computational advantage using photonic states that are accessible in a laboratory and, thus, offer scalable sources of quantum light. In this contribution, we study two-point photon-number correlation functions to gain insight into the interference of Gaussian states in optical networks. We investigate the characteristic features of statistical signatures which enable us to distinguish classical from quantum interference. In contrast to the typical implementation of boson sampling, we find additional contributions to the correlators under study which stem from the phase dependence of Gaussian states and which are not observable when Fock states interfere. Using the first three moments, we formulate the tools required to experimentally observe signatures of quantum interference of Gaussian states using two outputs only. By considering the current architectural limitations in realistic experiments, we further show that a statistically significant discrimination between quantum and classical interference is possible even in the presence of loss, noise, and a finite photon-number resolution. Therefore, we formulate and apply a theoretical framework to benchmark the quantum features of Gaussian boson sampling under realistic conditions.
U2 - 10.1103/PhysRevA.99.023836
DO - 10.1103/PhysRevA.99.023836
M3 - Article
VL - 99
JO - Physical review A : atomic, molecular, and optical physics and quantum information
JF - Physical review A : atomic, molecular, and optical physics and quantum information
SN - 2469-9926
IS - 2
M1 - 023836
ER -