Quantum circuits with many photons on a programmable nanophotonic chip
- URL: http://arxiv.org/abs/2103.02109v1
- Date: Wed, 3 Mar 2021 01:06:20 GMT
- Title: Quantum circuits with many photons on a programmable nanophotonic chip
- Authors: J.M. Arrazola, V. Bergholm, K. Br\'adler, T.R. Bromley, M.J. Collins,
I. Dhand, A. Fumagalli, T. Gerrits, A. Goussev, L.G. Helt, J. Hundal, T.
Isacsson, R.B. Israel, J. Izaac, S. Jahangiri, R. Janik, N. Killoran, S.P.
Kumar, J. Lavoie, A.E. Lita, D.H. Mahler, M. Menotti, B. Morrison, S.W. Nam,
L. Neuhaus, H.Y. Qi, N. Quesada, A. Repingon, K.K. Sabapathy, M. Schuld, D.
Su, J. Swinarton, A. Sz\'ava, K. Tan, P. Tan, V.D. Vaidya, Z. Vernon, Z.
Zabaneh, and Y. Zhang
- Abstract summary: We introduce a full-stack hardware-software system for executing many-photon quantum circuits using integrated nanophotonics.
It enables remote users to execute quantum algorithms requiring up to eight modes of strongly squeezed vacuum.
- Score: 0.23970423856196837
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Growing interest in quantum computing for practical applications has led to a
surge in the availability of programmable machines for executing quantum
algorithms. Present day photonic quantum computers have been limited either to
non-deterministic operation, low photon numbers and rates, or fixed random gate
sequences. Here we introduce a full-stack hardware-software system for
executing many-photon quantum circuits using integrated nanophotonics: a
programmable chip, operating at room temperature and interfaced with a fully
automated control system. It enables remote users to execute quantum algorithms
requiring up to eight modes of strongly squeezed vacuum initialized as two-mode
squeezed states in single temporal modes, a fully general and programmable
four-mode interferometer, and genuine photon number-resolving readout on all
outputs. Multi-photon detection events with photon numbers and rates exceeding
any previous quantum optical demonstration on a programmable device are made
possible by strong squeezing and high sampling rates. We verify the
non-classicality of the device output, and use the platform to carry out
proof-of-principle demonstrations of three quantum algorithms: Gaussian boson
sampling, molecular vibronic spectra, and graph similarity.
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