Browse Definitions:
Definition

entangled light-emitting diode (ELED)

An entangled LED is a light-emitting diode containing a quantum dot that enables the production of entangled photons (light particles) on demand. According to researchers at Toshiba labs, where the device was developed, ELEDs could be used to create an optical quantum computer capable of performing in seconds tasks that would take a high-end conventional computer years to complete.

An LED is a semiconductor device that emits visible light when an electric current passes through it. The ELED is similar to a semiconductor LED but, with the application of an electrical charge, emits entangled photons. Although entangled LEDs have previously been created with lasers, the equipment required is too bulky and complex to be practical for quantum computing applications. The compact and simple nature of entangled LEDs make it possible to include large numbers of electronically addressable entangled light emitters on a single chip.

Entanglement is a phenomenon of quantum mechanics in which particles can become correlated to predictably interact with each other regardless of how far apart they are separated. If one entangled particle's spin state (the direction of its spin) is measured, we know that the spin of its mate is in the opposite direction. Harnessing that capacity could yield the enormous increase in processing power expected from quantum computing.

Other potential applications for entangled LEDs include quantum cryptography.

 

Learn More:
> Ben Hirschler reports on Toshiba's development of entangled LEDs.
> Nature provides the ELED study's abstract and offers the research article for purchase.

This was last updated in June 2010

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • pure risk (absolute risk)

    Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

  • audit program (audit plan)

    An audit program, also called an audit plan, is an action plan that documents what procedures an auditor will follow to validate ...

SearchSecurity

SearchHealthIT

SearchDisasterRecovery

  • business continuity and disaster recovery (BCDR)

    Business continuity and disaster recovery (BCDR) are closely related practices that describe an organization's preparation for ...

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

SearchStorage

  • nearline storage

    Nearline storage is the on-site storage of data on removable media.

  • application-aware storage

    Application-aware storage is a storage system with built-in intelligence about relevant applications and their utilization ...

  • Remote Direct Memory Access (RDMA)

    Remote Direct Memory Access (RDMA) is a technology that allows computers in a network to exchange data in main memory without ...

SearchSolidStateStorage

  • 3D XPoint

    3D XPoint is memory storage technology jointly developed by Intel and Micron Technology Inc.

  • RRAM or ReRAM (resistive RAM)

    RRAM or ReRAM (resistive random access memory) is a form of nonvolatile storage that operates by changing the resistance of a ...

  • JEDEC

    JEDEC is a global industry group that develops open standards for microelectronics.

SearchCloudStorage

  • Google Cloud Storage

    Google Cloud Storage is an enterprise public cloud storage platform that can house large unstructured data sets.

  • RESTful API

    A RESTful application program interface breaks down a transaction to create a series of small modules, each of which addresses an...

  • cloud storage infrastructure

    Cloud storage infrastructure is the hardware and software framework that supports the computing requirements of a private or ...

Close