Quantum Communication Current Events

Quantum Communication Current Events, Quantum Communication News Articles.
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Firing photons makes advance in space communication
For the first time, physicists have been able to identify individual returning photons after firing and reflecting them off of a space satellite in orbit almost 1,500 kilometers above the earth. The experiment has proven the possibility of constructing a quantum channel between space and Earth. (2008-03-28)

Scientists demonstrate all-fiber quantum logic
A team of physicists and engineers have demonstrated all-fiber quantum logic, where single photons are generated and used to perform the controlled-NOT quantum logic gate in optical fibers with high fidelity. (2009-05-28)

Slicing optical beams: Cryptographic algorithms for quantum networks
The mathematical models can be used not only for quantum networks and authentication but also for full-scale quantum computing. Quantum hashing can help protect quantum algorithms against mistakes. Relevant research is currently in progress at Kazan Federal University. (2018-12-13)

Entangle, swap, purify, repeat: Enhancing connections between distant nodes
Scientists have developed a protocol that enhances quantum entanglement, confirming its effectiveness across a distance of two meters. (2017-06-01)

Measurement-device-independent quantum communication without encryption
Quantum secure direct communication transmits secret information directly without encryption. Recently, a research team led by Prof. Gui-Lu Long from Tsinghua University proposed a measurement- device- independent quantum secure direct communication protocol using Einstein-Podolsky-Rosen pairs. This protocol eliminates all loopholes related to measurement devices, which solves a key obstacle in practical quantum secure direct communication. The protocol has also an extended communication distance, and a high communication capacity. (2018-10-10)

UCSB physicists demonstrate the quantum von Neumann architecture
A new paradigm in quantum information processing has been demonstrated by physicists at UC Santa Barbara. Their results are published in this week's issue of Science Express online. (2011-09-01)

Scholars look to early 20th century radio technology to help improve Internet security
Standard lasers are actually not useful for secure communication because they emit what is called 'classical' light. Data eavesdroppers could extract any data being carried via classical light without detection. In contrast, a quantum Internet would be based on 'quantum' light, in which a single unit of light -- a single photon--cannot be measured without being destroyed. Therefore, an efficient source of quantum light would enable perfectly secure communication. (2016-01-27)

Trust is good, quantum trickery is better
An international team of scientists prove, for the first time, the security of so-called device-independent quantum cryptography in a regime that is attainable with state-of-the-art quantum technology, thus paving the way to practical realization of such schemes in which users don not have to worry whether their devices can be trusted or not. (2018-01-31)

Forging a quantum leap in quantum communication
The major drawback of quantum communication today is the slow speed of data transfer, which is limited by the speed at which the parties can perform quantum measurements. Researchers at Bar-Ilan University have devised a method that overcomes this (2018-02-09)

Scientists produce status check on quantum teleportation
Quantum teleportation is an important building block for quantum computing, quantum communication and quantum network and, eventually, a quantum Internet. While theoretical proposals for a quantum Internet already exist, there is still debate over which technology provides the most efficient and reliable teleportation system. An international team of researchers, led by Dr. Stefano Pirandola of the Department of Computer Science at the University of York, set out to resolve this dilemma. (2015-09-30)

A network of crystals for long-distance quantum communication
Quantum physic can guarantee that a message has not be intercepted. Thanks to the laws of quantum physic, a photon can be in two distinct states simultaneously. This superposition of states is destroyed as soon as it is read. In order to extend the reach of these quantum communications, researchers from UNIGE have demonstrated a novel protocol based on a crystal than can emit quantum light as well as store it for arbitrary long times. (2017-05-29)

Beating noise via superposition of order
Information can successfully be transmitted through noisy channels using quantum mechanics, according to new research from The University of Queensland and Griffith University. We all know it's impossible to take a picture through thick smoke or fog--physicists would say, 'it's impossible to send information through a completely noisy channel'. (2020-08-25)

First noiseless single photon amplifier
Research physicists have demonstrated the first device capable of amplifying the information in a single particle of light without adding noise. (2012-11-11)

Analogue quantum computation has been universally digitized using superconducting circuits
The QUTIS research group (www.qutisgroup.com) of the University of the Basque Country (UPV/EHU) and Google's quantum computation team have collaborated on a pioneering experiment that universally digitizes analogue quantum computation on a superconducting chip. This breakthrough was made at Google's labs in Santa Barbara (California) and has been published in the prestigious journal Nature. (2016-06-09)

Speed of light: Toward a future quantum internet
University of Toronto Engineering researchers have demonstrated proof-of-principle for a device that could serve as the backbone of a future quantum Internet. U of T professor Hoi-Kwong Lo and his collaborators have developed a prototype for a key element for all-photonic quantum repeaters, a critical step in long-distance quantum communication. (2019-01-28)

Quantum quirk contained
Researchers at the University of Calgary, in Canada, collaborating with the University of Paderborn, in Germany, are working on a way to make quantum networks a reality and have published their findings in the journal Nature. They have demonstrated, for the first time, that a crystal can store information encoded into entangled quantum states of photons (2011-01-12)

Researchers demonstrate a new way to characterize twisted light
Researchers at the University of Rochester have overcome experimental challenges to demonstrate a new way for getting a full picture of twisted light: characterizing the Wigner distribution. Twisted light has raised researchers' interest for its potential for quantum communication applications. (2016-04-01)

Quantum effects help minimise communication flaws
Noise limits the performance of modern quantum technologies. However, particles traveling in a superposition of paths can bypass noise in communication. A collaboration between the Universities of Hong-Kong, Grenoble and Vienna, as well as the Austrian Academy of Sciences, under the lead of Philip Walther, reveals novel techniques to reduce noise in quantum communication. The results, published in the latest issue of Physical Review Research, demonstrate that quantum particles traveling in a superposition of paths enable noise reduction in communications. (2021-02-10)

Unlocking the gates to quantum computing
Researchers from Griffith University and the University of Queensland have overcome one of the key challenges to quantum computing by simplifying a complex quantum logic operation. They demonstrated this by experimentally realizing a challenging circuit -- the quantum Fredkin gate -- for the first time. (2016-03-25)

A small quantum leap
Northwestern University researchers have developed a new switching device that takes quantum communication to a new level. They can route quantum bits, or entangled particles of light, at very high speeds along a shared network of fiber-optic cable without losing the entanglement information embedded in the quantum bits. The switch could be used toward achieving two goals of the information technology world: a quantum Internet, where encrypted information would be completely secure, and networking superfast quantum computers. (2011-03-10)

Computer hackers R.I.P. -- making quantum cryptography practical
Quantum cryptography, a completely secure means of communication, is much closer to being used practically as researchers from Toshiba and Cambridge University's Cavendish Laboratory have now developed high speed detectors capable of receiving information with much higher key rates, thereby able to receive more information faster. (2009-04-30)

Doing more with less: Steering a quantum path to improved internet security
Research conducted at Griffith University in Queensland, Australia, may lead to greatly improved security of information transfer over the internet. In a paper published in the online journal Nature Communications, physicists from Griffith's Centre for Quantum Dynamics demonstrate the potential for 'quantum steering' to be used to enhance data security over long distances, discourage hackers and eavesdroppers and resolve issues of trust with communication devices. (2015-01-07)

Quantum algorithm breakthrough
An international research group led by scientists from the University of Bristol, UK, and the University of Queensland, Australia, has demonstrated a quantum algorithm that performs a true calculation for the first time. Quantum algorithms could one day enable the design of new materials, pharmaceuticals or clean energy devices. (2013-02-24)

Data highways for quantum information
Researchers at the Vienna University of Technology quantum mechanically couple atoms to glass fiber cables. Now, they have shown that their technique enables storage of quantum information over a sufficiently long period of time to realize global quantum networks based on optical fibers. (2013-06-12)

Straightening messy correlations with a quantum comb
Dong Yang and Jens Eisert of the University of Potsdam have shown how to delicately comb out a snarl of entanglements among many qubits while keeping the information intact. (2009-11-23)

Researchers unite to distribute quantum keys
Researchers from across Europe have united to build the largest quantum key distribution network ever built. The efforts of 41 research and industrial organizations were realized as secure, quantum encrypted information was sent over an eight node, mesh network. (2009-07-02)

Physicist honored by the Australian Academy of Science
Professor Geoff Pryde from Griffith University's Centre for Quantum Dynamics has been awarded the 2014 Pawsey Medal by the Australian Academy of Science. (2014-01-21)

Not 1, not 2, not 3, but 4 clones!
Chinese researchers have produced a theory for a quantum cloning machine able to produce several copies of the state of a particle at atomic or sub-atomic scale, or quantum state, in an article about to be published in EPJ D. This could have implications for quantum information processing methods used, for example, in message encryption systems. (2011-11-04)

Toronto hosts quantum info and quantum control conference
The University of Toronto will host the world's leading scientists in physics, chemistry, computer science and mathematics to review major advances in quantum information and quantum control during a conference running Aug. 24-27. (2009-08-11)

Sharing a secret...the quantum way
Researchers at the University of the Witwatersrand in Johannesburg, South Africa, have demonstrated a record setting quantum protocol for sharing a secret amongst many parties. (2020-07-31)

Quantum holograms as atomic scale memory keepsake
A theoretical model of quantum memory for light, adapting the concept of a hologram to a quantum system has been published in EPJD. The authors demonstrate that it is theoretically possible to retrieve, on demand, a given portion of the stored quantized light signal of a holographic image -- set in a given direction in a given position in time sequence. This is done by shaping the control field both in space and time. (2014-10-21)

Quantum memory for communication networks of the future
Researchers from the Niels Bohr Institute at the University of Copenhagen have succeeded in storing quantum information using two 'entangled' light beams. Quantum memory or information storage is a necessary element of future quantum communication networks. The new findings are published in Nature Physics. (2010-11-08)

Quantum technologies move a step closer with the demonstration of an 'entanglement' filter
A team of physicists and engineers has demonstrated an optical device that filters two particles of light (or photons) based on the correlations between their polarization. (2009-01-22)

Quantum algorithm proposed to solve Dyck language problems
In the paper, Khadiev and his colleagues demonstrated an algorithm that can solve the problem in 40 seconds and also proved that it cannot be solved in less than 10 second on a quantum computer. (2020-09-04)

Researchers achieve multifunctional solid-state quantum memory
Research team from CAS Key Lab of Quantum Information developed multi-degree-of-freedom multiplexed solid-state quantum memory and demonstrate photon pulse operation functions with time and frequency degree-of-freedoms. (2018-08-24)

Physicists mimic quantum entanglement with laser pointer to double data speeds
In a classic eureka moment, a team of physicists led by The City College of New York and including Herriot-Watt University and Corning Incorporated is showing how beams from ordinary laser pointers mimic quantum entanglement with the potential of doubling the data speed of laser communication. (2015-10-28)

Precise quantum cloning: Possible pathway to secure communication
Physicists in Australia have cloned light at the quantum scale, opening the door to ultra-secure encrypted communications. 'We have produced near-perfect clones of light beams encoded with quantum information,' said lead researcher Professor Ping Koy Lam.'Our clones are higher quality than have ever been made before. We hope this technology could be used to extend the range of communication, and one day lead to impenetrable privacy between two communicating parties,' he said. (2016-10-26)

New technique can capture images of ultrafast energy-time entangled photon pairs
Scientists at the Institute for Quantum Computing (IQC) at the University of Waterloo have captured the first images of ultrafast photons that are energy-time entangled. The new technique will have direct applications for quantum cryptography and communication protocols, including the possibility for establishing highly secure communication channels over long distances. (2018-02-01)

Quantum physics: Physicists successfully carry out controlled transport of stored light
A team of physicists at Mainz University has successfully transported light stored in a quantum memory over a distance of 1.2 millimeters. They have demonstrated that the controlled transport process and its dynamics has only little impact on the properties of the stored light. The researchers used ultra-cold rubidium-87 atoms as a storage medium for the light as to achieve a high level of storage efficiency and a long lifetime. (2020-10-13)

Mapping the future direction for quantum research
The way research in quantum technology will be taken forward has been laid out in a revised roadmap for the field. Published today in the New Journal of Physics, leading European quantum researchers summarise the field's current status, and examine its challenges and goals. (2018-08-15)

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