# 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…

## 106 Citations

### Boson Sampling with Ultracold Atoms

- Physics
- 2022

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

- PhysicsScience advances
- 2022

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

- Physics
- 2022

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

- Physics
- 2022

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 —…

### On-chip quantum information processing with distinguishable photons

- Physics
- 2022

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…

### Effect of partial distinguishability on quantum supremacy in Gaussian Boson sampling

- Computer Sciencenpj Quantum Information
- 2022

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.

### The Complexity of Bipartite Gaussian Boson Sampling

- Computer ScienceArXiv
- 2021

It is shown that, under the standard Anti-Concentration and Permanent-of-Gaussians conjectures, there is no eﬃcient classical algorithm to sample from ideal Gaussian boson sampling distributions (even approximately) unless the polynomial hierarchy collapses, and the reduction to prove that GBS is hard in the constant-collision regime.

### Cracking the Quantum Advantage Threshold for Gaussian Boson Sampling

- Physics, Computer ScienceQuantum 2.0 Conference and Exhibition
- 2022

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.

### Certification of Gaussian Boson Sampling via graphs feature vectors and kernels

- Computer ScienceQuantum Science and Technology
- 2022

This work interprets the properties of the feature vectors of the graph encoded in the device as a signature of correct sampling from the true input state and proposes a novel approach to the actual need for tailored algorithms to benchmark large-scale Gaussian Boson Samplers.

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

- PhysicsPhysical Review A
- 2022

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…

## References

SHOWING 1-10 OF 85 REFERENCES

### Benchmarking of Gaussian boson sampling using two-point correlators

- Physics, Computer SciencePhysical Review A
- 2019

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

- PhysicsScience Advances
- 2015

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.

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

- PhysicsPhysical review letters
- 2017

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.

- PhysicsPhysical review letters
- 2018

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.

### Generation and sampling of quantum states of light in a silicon chip

- PhysicsNature Physics
- 2019

The techniques can be readily scaled for the on-chip implementation of specialized quantum algorithms with tens of photons, pointing the way to efficiency advantages over conventional computers15.

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

- PhysicsPhysical review letters
- 2019

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.

- PhysicsNature
- 2021

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.

- Physics, Computer SciencePhysical review letters
- 2020

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

- PhysicsScience
- 2020

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.