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Photonic tunneling permits superluminal signal transmission. The principle of causality is not violated but the time duration between cause and effect can be shortened compared with an interaction exchange with velocity of light. This…

General Physics · Physics 2017-08-23 Günter Nimtz

The local hidden variable assumption was repeatedly proved unable to explain results of experiments in which contextuality is involved. Then, the correlated results of measurements of entangled particles, began to be attributed to a…

Quantum Physics · Physics 2019-10-15 Sofia Wechsler

A recently proposed gedankenexperiment involving the (gravitational or electromagnetic) interaction between two objects--one placed in a state of quantum superposition of two locations--seems to allow for faster-than-light communication.…

Quantum Physics · Physics 2023-10-02 P. Ávila , E. Okon , D. Sudarsky , M. Wiedemann

A means and protocol is presented to send information on the Bell Channel to achieve the effect of superluminal signalling. The method is to use detection of a photon entangled state as one binary digit and either of the collapsed states as…

General Physics · Physics 2011-06-14 R. O. Cornwall

This paper shall define and discuss two types of quantum process - Disentangling and Entangling. The first type will be shown to contradict Unitarity and is therefore ruled out as a possible signalling process within standard linear Quantum…

Quantum Physics · Physics 2007-05-23 Alex Malikotsinas

In this paper we present a theoretical analysis of the faster than light communication possibility based on entangled photons. We analyze designs that may be capable to solve the problem of direct information transfer between members of an…

Quantum Physics · Physics 2024-08-05 Levente Szabó , Pál Maák

An explanation for superluminal phenomena based on wave-particle duality of photons is suggested. A single photon may be regarded as a wave packet, whose spatial extension is its coherence volume. As a photon propagates as a wave train in…

Quantum Physics · Physics 2024-03-15 Hai-Long Zhao

Tunnelling processes are thought to proceed via virtual waves due to observed superluminal (faster than light) signal speeds. Some assume such speeds must violate causality. These assumptions contradict, for instance, superluminally…

Optics · Physics 2015-03-24 Horst Aichmann , Guenter Nimtz , Paul Bruney

A high-quality narrowband polarization-entangled source in the telecom band is preferred to avoid frequency dispersion for long-distance transmission in optical fibers and to efficiently couple with telecom band quantum memories. Here, we…

Quantum Physics · Physics 2024-03-01 Ming-Yuan Gao , Yin-Hai Li , Yan Li , Zhenghe Zhou , Guang-Can Guo , Zhi-Yuan Zhou , Bao-Sen Shi

The distribution of entanglement via satellite links will drastically extend the reach of quantum networks. Highly efficient entangled photon sources are an essential requirement towards overcoming high channel loss and achieving practical…

Quantum Physics · Physics 2023-05-10 Emma Brambila , Rodrigo Gómez , Riza Fazili , Markus Gräfe , Fabian Steinlechner

An EPR experiment with polarized entangled photons is performed to test the Eberhard model. According to the Eberhard model, quantum correlations between space-like separated events are due to a superluminal communication signal propagating…

Quantum Physics · Physics 2011-01-11 Bruno Cocciaro , Sandro Faetti , Leone Fronzoni

We propose a feasible scheme for teleporting an arbitrary polarization state or entanglement of photons by requiring only single-photon (SP) sources, simple linear optical elements and SP quantum non-demolition measurements. An unknown SP…

Quantum Physics · Physics 2007-05-23 Zeng-Bing Chen , Huai-Xin Lu , Yong-De Zhang

Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols. Here, we demonstrate a functional source of…

We propose a scheme for long-distance quantum communication where the elementary entanglement is generated through two-photon interference and quantum swapping is performed through one-photon interference. Local "polarization" maximally…

Quantum Physics · Physics 2010-03-03 Fang-Yu Hong , Shi-Jie Xiong , W. H. Tang

We report a versatile and practical approach for generating high-quality polarization entanglement in a fully guided-wave fashion. Our setup relies on a high-brilliance type-0 waveguide generator producing paired photon at a telecom…

Quantum Physics · Physics 2013-10-31 F. Kaiser , A. Issautier , L. A. Ngah , O. Alibart , A. Martin , S. Tanzilli

Entanglement is a unique quantum mechanical attribute and a fundamental resource of quantum technologies. Entanglement can be achieved in various individual degrees of freedom, nonetheless some systems are able to create simultaneous…

It is known that superluminal transmission of information and energy contradicts Einstein's relativity. Here we announce an unusual TOE called 'nature theory' in which impossible things become possible. We present the scheme of an apparatus…

Quantum Physics · Physics 2007-05-23 Zbigniew A. Nowacki

It is commonly believed that photon polarisation entanglement can only be obtained via pair creation within the same source or via postselective measurements on photons that overlapped within their coherence time inside a linear optics…

Quantum Physics · Physics 2009-11-10 Yuan Liang Lim , Almut Beige

This paper shows that ordinary quantum mechanics is not consistent with the superluminal transmission of classical information.

Quantum Physics · Physics 2007-05-23 Michael D. Westmoreland , Benjamin Schumacher

Since Bell's theorem, it is known that quantum correlations cannot be described by local variables (LV) alone: if one does not want to abandon classical mechanisms for correlations, a superluminal form of communication among the particles…

Quantum Physics · Physics 2007-05-23 Valerio Scarani , Nicolas Gisin
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