Using classical coding, a single photon will convey only one of two messages - one bit of information. In dense coding, a single photon can convey one of four messages - two bits of information.

University of Illinois researchers say they have broken the record for the most amount of information sent by a single photon using the direction of “wiggling” and “twisting” of a pair of hyper-entangled photons. Doing so, they have beaten a fundamental limit on the channel capacity for dense coding with linear optics.

“Dense coding is arguably the protocol that launched the field of quantum communication,” said Paul Kwiat, a John Bardeen Professor of Physics and Electrical and Computer Engineering. “Today, however, more than a decade after its initial experimental realization, channel capacity has remained fundamentally limited as conceived for photons using conventional linear elements.”

TOKYO, March 24 /PRNewswire/ --

NTT Communications (NTT Com) announced today that it will establish a physical presence in the Russian market by opening a representative office in Moscow on April 1.

The office, which will start with a staff of five, will engage primarily in researching the Russian telecommunications market and promoting NTT Com's wide variety of services for enterprise customers.

According to Kazuyoshi Terada, Vice President of Business Strategy, Global Business Division, "The NTT Communications Moscow Representative Office will strengthen NTT Com's ability to develop and serve multinational enterprise customers who require high-quality one-stop ICT solutions and network resources in the Russian market."

SANTA CLARA, California, March 24 /PRNewswire/ --

Finesse Solutions, LLC, a manufacturer of measurement and control solutions for life sciences process applications, announces the release of TruFluor(TM), a single use optical dissolved oxygen measurement system, at Interphex in Philadelphia on March 26, 2008.

The TruFluor(TM) dissolved oxygen and temperature sensor is a single-use solution consisting of a disposable sheath, an optical reader, and a transmitter. The single-use sheath can be pre-inserted in a disposable bioreactor bag port, and irradiated with the bag, in order to both preserve and guarantee the sterile barrier. All wetted materials of the sheath are USP class VI compliant.

AUSTIN, Texas, March 24 /PRNewswire/ --

Database-Brothers, Inc. (DBI) today announced a program that allows customers to name the terms, conditions and price they are willing to pay for database performance and auditing software. For the first time ever a software company is allowing customers to proactively participate in the pricing and terms of licensing software with the introduction of DBI Bid.

(Logo: http://www.newscom.com/cgi-bin/prnh/20060505/NYF037LOGO)

Chemists at the University of California, San Diego have discovered that a chemical reaction in the atmosphere above major cities long assumed to be unimportant in urban air pollution is in fact a significant contributor to urban ozone—the main component of smog.

Their finding should help air quality experts devise better strategies to reduce ozone for US areas that exceed new standards announced last week by the Environmental Protection Agency and also benefit cities like Mexico City and Beijing that are grappling with major air quality and urban smog problems. More than 100 million people worldwide currently live in cities that fail to meet international standards for air quality.

BOSTON, March 24 /PRNewswire/ --

- Campaign Captures Athletes' Love/Hate Relationship With Running and Brand's Promise to Increase the Love

Global athletic leader New Balance debuts a new brand campaign on March 27, 2008 that highlights running as fundamental to all sport and spotlights the runner's complex love/hate relationship with running. The campaign brings these struggles and personal breakthroughs to life by personifying running in a light-hearted and engaging manner and showcases the brand's ability to increase the love of running through product innovation.

WASHINGTON, March 23 /PRNewswire/ --

In a Baltimore Sun opinion piece today (1), AIDS Healthcare Foundation (AHF) called for the suspension of costly HIV vaccine research funding and the re-allocation of resources into effective, proven HIV/AIDS prevention, testing and treatment strategies.

Co-authored by Dr. Homayoon Khanlou, AHF's Chief of Medicine/U.S. and Michael Weinstein, AHF's President, the op ed, "Enough is Enough," has been published on the eve of the HIV Vaccine Summit assembled by the director of the National Institute of Allergy and Infectious Diseases (NIAID) Dr. Anthony Fauci and scheduled for this upcoming Tuesday, March 25th in Bethesda, Maryland. This meeting of top leaders in the field is being convened at the urging of members of the scientific community concerned by the overall HIV vaccine funding strategy in the wake of a string of recent, highly publicized trial failures. The text of AHF's opinion editorial is below:

Graphene, a single-atom-thick sheet of graphite, is a new material which combines aspects of semiconductors and metals.

University of Maryland physicists have shown that in graphene the intrinsic limit to the mobility, a measure of how well a material conducts electricity, is higher than any other known material at room temperature - and 100 times faster than in silicon.

A team of researchers led by physics professor Michael S. Fuhrer of the university's Center for Nanophysics and Advanced Materials, and the Maryland NanoCenter said the findings are the first measurement of the effect of thermal vibrations on the conduction of electrons in graphene, and show that thermal vibrations have an extraordinarily small effect on the electrons in graphene.

In baseball's golden age, pitchers had a higher mound and threw more complete games but careers were shorter. As salaries continue to rise there is greater concern about protecting the investments. A new study involving several Major League Baseball pitchers indicates that the height of the pitcher’s mound can affect the athlete’s throwing arm motion, which may lead to potential injuries because of stress on the shoulder and elbow.

The study was led by William Raasch, M.D., associate professor of orthopaedic surgery at the Medical College of Wisconsin in Milwaukee, who also is the head team physician for the Milwaukee Brewers. Major League Baseball funded the study in an effort to help prevent injuries among professional baseball players.

Since robots live in a binary world, it is difficult to program them in a way where they can understand the nuances and inflections of human speech among many different people.

A team of researchers from the Georgia Institute of Technology and Emory University may have made that unnecessary. They can instruct a robot to find and deliver things using something more direct than speech - a laser pointer.

El-E (pronounced like the name Ellie), a robot designed to help users with limited mobility with everyday tasks, autonomously moves to an item selected with a green laser pointer, picks up the item and then delivers it to the user, another person or a selected location such as a table. El-E, named for her ability to elevate her arm and for the arm's resemblance to an elephant trunk, can grasp and deliver several types of household items including towels, pill bottles and telephones from floors or tables.