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Quantum Physics Mar 24, 2024

Beyond cloning: Harnessing the power of virtual quantum broadcasting

In a new study, scientists propose the concept of "virtual quantum broadcasting," which provides a workaround to the longstanding no-cloning theorem, thereby offering new possibilities for the transmission of quantum information.

Quantum Physics Oct 6, 2023

Scientists develop a semi-device independent, randomness-free test for quantum correlation

In a new Physical Review Letters study, scientists have successfully presented a proof of concept to demonstrate a randomness-free test for quantum correlations and non-projective measurements, offering a groundbreaking alternative ...

Quantum Physics Sep 6, 2023

Study proves the difficulty of simulating random quantum circuits for classical computers

Quantum computers, technologies that perform computations leveraging quantum mechanical phenomena, could eventually outperform classical computers on many complex computational and optimization problems. While some quantum ...

Quantum Physics Mar 10, 2023

A framework to self-test all entangled states using quantum networks

Self-testing is a promising method to infer the physics underlying specific quantum experiments using only collected measurements. While this method can be used to examine bipartite pure entangled states, so far it could ...

General Physics Apr 22, 2021

A new method to generate and control orbital angular momentum beams

Artificial spin ices (ASIs) are magnetic metamaterials with exotic properties that are dependent on their geometries. Over the past few years, many physicists have studied these materials, as their unique properties could ...

Quantum Physics Dec 29, 2020

Metasurface enabled quantum edge detection

Metasurfaces provide unique platforms to realize exotic phenomena including negative refraction, achromatic focusing, and electromagnetic cloaking due to the engineered dielectric or metallic architectures. The intersection ...

Quantum Physics Feb 4, 2020

Applying advantage distillation to device-independent quantum key distribution (DIQKD)

Researchers at ETH Zürich and National University of Singapore have carried out a study investigating whether advantage distillation, a classical cryptography technique that has so far never been successfully implemented, ...

Quantum Physics Feb 18, 2019

Implementing a practical quantum secure direct communication system

Quantum secure direct communication (QSDC) is an important branch of quantum communication, based on the principles of quantum mechanics for the direct transmission of classified information. While recent proof-of-principle ...

Quantum Physics Apr 10, 2018

Quantum simulator offers faster route for prime factorization

Factoring very large numbers into their prime "building blocks" is extremely difficult for classical computers, and this difficulty underlies the security of many cryptographic algorithms. While it's easy to factor the number ...

Quantum Physics Mar 9, 2018

Entangled LED first to operate in the telecom window

Researchers have demonstrated the first quantum light-emitting diode (LED) that emits single photons and entangled photon pairs with a wavelength of around 1550 nm, which lies within the standard telecommunications window. ...

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