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The quantum computer is growing up: Repetitive error correction in a quantum processor

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TechAndComputer (May 26, 2011) — Physicists have demonstrated a crucial element for a future functioning quantum computer: repetitive error correction. This allows scientists to correct errors occurring in a quantum computer efficiently.

A general rule in data processing is that disturbances cause the distortion or deletion of information during data storage or transfer. Methods for conventional computers were developed that automatically...

TechAndComputer (May 26, 2011) — Physicists have demonstrated a crucial element for a future functioning quantum computer: repetitive error correction. This allows scientists to correct errors occurring in a quantum computer efficiently.

A general rule in data processing is that disturbances...

A new system increases network communication security and anonymity

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TechAndComputer (May 25, 2011) — Carlos Caselles Jiménez, a researcher at the Universidad Politécnica de Madrid's Facultad de Informática, has developed an anonymous system with automatic routing management under the supervision of Dr. Luis Mengual Galán.

The system sets up a data transmission communication environment whose users are unidentifiable. This safeguards user privacy, as well as improving information exchange security, making both...

TechAndComputer (May 25, 2011) — Carlos...

Build safety into the very beginning of the computer system

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TechAndComputer (May 11, 2011) — A new publication from the National Institute of Standards and Technology (NIST) provides guidelines to secure the earliest stages of the computer boot process. Commonly known as the Basic Input/Output System (BIOS), this fundamental system firmware -- computer code built into hardware -- initializes the hardware when you switch on the computer before starting the operating system. BIOS security is a new area of...

TechAndComputer (May 11, 2011) — A new...

Hide files within files for better data security: Using executable program files to hide data with steganography

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TechAndComputer (May 31, 2011) — A new approach to hiding data within executable computer program files could make it almost impossible to detect hidden documents, according to a report in the International Journal of Internet Technology and Secured Transactions.

Steganography is a form of security through obscurity in which information is hidden within an unusual medium. An artist might paint a coded message into a portrait, for instance, or an...

TechAndComputer (May 31, 2011) — A new...

Single atom stores quantum information

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TechAndComputer (May 2, 2011) — A data memory can hardly be any smaller: researchers working with Gerhard Rempe at the Max Planck Institute of Quantum Optics in Garching have stored quantum information in a single atom. The researchers wrote the quantum state of single photons, i.e. particles of light, into a rubidium atom and read it out again after a certain storage time. This technique can be used in principle to design powerful quantum...

TechAndComputer (May 2, 2011) — A data memory...