Scientists edge toward scalable quantum simulations on a photonic chip
A system using photonics-based synthetic dimensions could be used to help explain complex natural phenomena

Date:
June 29, 2023
Source:
University of Rochester
Summary:
A system using photonics-based synthetic dimensions could be used
to help explain complex natural phenomena.


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FULL STORY ========================================================================== Scientists have made an important step toward developing computers
advanced enough to simulate complex natural phenomena at the quantum
level. While these types of simulations are too cumbersome or outright impossible for classical computers to handle, photonics-based quantum
computing systems could provide a solution.

A team of researchers from the University of Rochester's Hajim School of Engineering & Applied Sciences developed a new chip-scale optical quantum simulation system that could help make such a system feasible. The team,
led by Qiang Lin, a professor of electrical and computer engineering
and optics, published their findings in Nature Photonics.

Lin's team ran the simulations in a synthetic space that mimics the
physical world by controlling the frequency, or color, of quantum
entangled photons as time elapses. This approach differs from the
traditional photonics-based computing methods in which the paths of
photons are controlled, and also drastically reduces the physical
footprint and resource requirements.

"For the first time, we have been able to produce a quantum-correlated synthetic crystal," says Lin. "Our approach significantly extends the dimensions of the synthetic space, enabling us to perform simulations
of several quantum-scale phenomena such as random walks of quantum
entangled photons." The researchers say that this system can serve as
a basis for more intricate simulations in the future.

"Though the systems being simulated are well understood, this proof-of- principle experiment demonstrates the power of this new approach for
scaling up to more complex simulations and computation tasks, something
we are very excited to investigate in the future," says Usman Javid
'23 PhD (optics), the lead author on the study.

Other coauthors from Lin's group include Raymond Lopez-Rios, Jingwei Ling, Austin Graf, and Jeremy Staffa.

The project was supported with funding from the National Science
Foundation, the Defense Threat Reduction Agency's Joint Science and
Technology Office for Chemical and Biological Defense, and the Defense
Advanced Research Projects Agency.

* RELATED_TOPICS
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========================================================================== Story Source: Materials provided by University_of_Rochester. Original
written by Luke Auburn.

Note: Content may be edited for style and length.


========================================================================== Journal Reference:
1. Usman A. Javid, Raymond Lopez-Rios, Jingwei Ling, Austin Graf,
Jeremy
Staffa, Qiang Lin. Chip-scale simulations in a
quantum-correlated synthetic space. Nature Photonics, 2023; DOI:
10.1038/s41566-023-01236-7 ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2023/06/230629193313.htm

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