Phase-Programmable Gaussian Boson Sampling Using Stimulated Squeezed Light.

@article{Zhong2021PhaseProgrammableGB,
  title={Phase-Programmable Gaussian Boson Sampling Using Stimulated Squeezed Light.},
  author={Han-Sen Zhong and Yu-Hao Deng and Jian Qin and Hui Wang and Ming-Cheng Chen and Li-Chao Peng and Yi-Han Luo and Dian Wu and Si-Qiu Gong and Hao-Ru Su and Yi Hu and Pengchao Hu and Xiaoyan Yang and Wei-Jun Zhang and Hao Li and Yuxuan Li and Xiao Jiang and Lin Gan and Guangwen Yang and Lixing You and Zhen Wang and Li Li and Nai-Le Liu and Jelmer J. Renema and Chaoyang Lu and Jian-Wei Pan},
  journal={Physical review letters},
  year={2021},
  volume={127 18},
  pages={
          180502
        }
}
We report phase-programmable Gaussian boson sampling (GBS) which produces up to 113 photon detection events out of a 144-mode photonic circuit. A new high-brightness and scalable quantum light source is developed, exploring the idea of stimulated emission of squeezed photons, which has simultaneously near-unity purity and efficiency. This GBS is programmable by tuning the phase of the input squeezed states. The obtained samples are efficiently validated by inferring from computationally… 

Figures from this paper

Boson Sampling with Ultracold Atoms

Sampling from a quantum distribution can be exponentially hard for classical computers and yet could be performed efficiently by a noisy intermediate-scale quantum device. A prime example of a

The boundary for quantum advantage in Gaussian boson sampling

TLDR
A distribution is introduced that is efficient to sample from classically and that passes a variety of GBS validation methods, providing an important adversary for future experiments to test against, and reduces the run-time of classically simulating state-of-the-art GBS experiments to several months.

Assessing the quality of near-term photonic quantum devices

For near-term quantum devices, an important challenge is to develop efficient methods to certify that noise levels are low enough to allow potentially useful applications to be carried out. We

Multi-squeezed state generation and universal bosonic control via a driven quantum Rabi model

Universal control over a bosonic degree of freedom is key in the quest for quantum-based technologies. Such universal control requires however the ability to perform demanding non-Gaussian gates —

Effect of partial distinguishability on quantum supremacy in Gaussian Boson sampling

TLDR
This paper develops a model and algorithm and shows how the boundary of quantum supremacy in GBS can be affected by partial distinguishability, and proposes an efficient classical simulation algorithm which can be used to calculate the probabilities.

Cracking the Quantum Advantage Threshold for Gaussian Boson Sampling

TLDR
This work challenges the quantum advantage claimed for the Gaussian Boson Sampling experiment by introducing an approximate polynomial-time algorithm and gives an accuracy comparable with that of the experiment.

Almost indistinguishable single photons via multiplexing cascaded biphotons with cavity modulation and phase compensation

The cascade-emitted biphotons generated from the alkali metal atomic ensembles are an excellent entanglement resource which enables long-distance quantum communication. The communication of quantum

Efficient approximation of experimental Gaussian boson sampling

Two recent landmark experiments have performed Gaussian boson sampling (GBS) with a nonprogrammable linear interferometer and threshold detectors on up to 144 output modes (see Refs. 1 and 2). Here

Certification of Gaussian Boson Sampling via graph theory

TLDR
This work interprets the properties of the feature vectors of the graph encoded in the Gaussian Boson Sampling device as a signature of correct sampling from the true input state and proposes two approaches that exploit the distributions of graph feature vectors and graph kernels.

Quantum computational advantage with a programmable photonic processor

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
...

References

SHOWING 1-10 OF 85 REFERENCES

Benchmarking of Gaussian boson sampling using two-point correlators

TLDR
This contribution studies two-point photon-number correlation functions to gain insight into the interference of Gaussian states in optical networks and investigates the characteristic features of statistical signatures which enable us to distinguish classical from quantum interference.

Experimental scattershot boson sampling

TLDR
The first scattershot boson sampling experiments are reported, where six different photon-pair sources are coupled to integrated photonic circuits, providing strong evidence that the photonic quantum simulator works as expected.

Experimental Gaussian Boson sampling

Boson Sampling with Single-Photon Fock States from a Bright Solid-State Source.

TLDR
This work reports on a boson-sampling device operated with a bright solid-state source of single-photon Fock states with high photon-number purity, and a demultiplexed source between 1 and 2 orders of magnitude more efficient than current heralded multiphoton sources based on spontaneous parametric down-conversion.

Toward Scalable Boson Sampling with Photon Loss.

TLDR
This experiment uses a quantum-dot-micropillar single-photon source demultiplexed into up to seven input ports of a 16×16 mode ultralow-loss photonic circuit, and detects three-, four- and fivefold coincidence counts, and demonstrates that boson sampling with a few photons lost can increase the sampling rate.

Boson Sampling with 20 Input Photons and a 60-Mode Interferometer in a 10^{14}-Dimensional Hilbert Space.

TLDR
Solid-state sources of highly efficient, pure, and indistinguishable single photons and 3D integration of ultralow-loss optical circuits are developed and the Boson sampling regime enters into a genuine sampling regime where it becomes impossible to exhaust all possible output combinations.

Quantum circuits with many photons on a programmable nanophotonic chip.

TLDR
A full-stack hardware-software system for executing many-photon quantum circuit operations using integrated nanophotonics: a programmable chip, operating at room temperature and interfaced with a fully automated control system, which validate the non-classicality of the device output.

Regimes of Classical Simulability for Noisy Gaussian Boson Sampling.

TLDR
It is shown that, for most linear-optical architectures, where photon loss increases exponentially with the circuit depth, noisy GBS loses its quantum advantage in the asymptotic limit, and delineate intermediate-sized regimes where GBS devices might considerably outperform classical computers for modest noise levels.

Quantum computational advantage using photons

TLDR
Gaussian boson sampling was performed by sending 50 indistinguishable single-mode squeezed states into a 100-mode ultralow-loss interferometer with full connectivity and random matrix and sampling the output using 100 high-efficiency single-photon detectors, and the obtained samples were validated against plausible hypotheses exploiting thermal states, distinguishable photons, and uniform distribution.

12-Photon Entanglement and Scalable Scattershot Boson Sampling with Optimal Entangled-Photon Pairs from Parametric Down-Conversion.

TLDR
A degenerate telecommunication wavelength entangled-photon source from an ultrafast pulsed laser pumped spontaneous parametric down-conversion (SPDC), which shows simultaneously 97% heralding efficiency and 96% indistinguishability between independent single photons without narrow-band filtering is designed and realized.
...