Navigation Links
Turning down the noise in quantum data storage
Date:1/19/2010

Researchers who hope to create quantum computers are currently investigating various methods to store data. Nitrogen atoms embedded in diamond show promise for encoding quantum bits (qubits), but the process of reading the information results in an extremely weak signal. Now physicists have demonstrated a roundabout approach for generating a significantly stronger signal from these sorts of qubits. Their experiment is reported in the current issue of Physical Review B and highlighted with a Viewpoint in the January 19 issue of Physics (http://physics.aps.org.)

In a quantum computer, a single bit of information is encoded into a property of a quantum mechanical systemthe spin of an electron, for example. In most arrangements that rely on Nitrogen atoms in diamond to store data, reading the information also resets the qubit, which means there is only one opportunity to measure the state of the qubit. By developing a technique that involves the spin of the Nitrogen nucleus in the process as well, a team of physicists at the University of Stuttgart in Germany has turned the single step read-out into a multi-step process. Rather than simply resetting the electron-based qubit when the information is read, the researchers discovered that they can force the state of the Nitrogen nucleus to change state twice before the information in the qubit is finally erased. The state of the Nitrogen nucleus doesn't store any useful information, it simply allows the researchers to add steps to the process of reading the qubit's state. This results in a more convoluted quantum mechanical process that triples the number of events that occur before information is destroyed, which in turn strengthens the signal revealing information stored in the qubit.

The resulting signal is still weak, but by combining other clever methods to the problem researchers might one day be able to use impurities in diamond to read and write quantum information at room temperaturewhich would bring us much closer to creating practical quantum computers.


'/>"/>

Contact: James Riordon
riordon@aps.org
301-209-3238
American Physical Society
Source:Eurekalert  

Related biology technology :

1. Frost & Sullivan Reveals Strategies on Turning Challenges into Opportunities in the European Biomarkers Market
2. Life Science Firms are Turning to Firmex to do Deals Online
3. Video: Turning Hope Into Reality - VA Research to Restore Veterans Abilities
4. Powered by olive stones? Turning waste stones into fuel
5. Specialists Are Turning to Biologics Earlier in the Treatment of Psoriasis and Psoriatic Arthritis
6. Exclusive Conference on Managing Your Online Brand: Shaping the Noise from the Blogosphere
7. First tunable, noiseless amplifier may boost quantum computing, communications
8. Golden ratio discovered in a quantum world
9. Straightening messy correlations with a quantum comb
10. NIST demonstrates universal programmable quantum processor
11. Quantum computer chips now 1 step closer to reality
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Turning down the noise in quantum data storage
(Date:5/26/2016)... READING, England , May 26, 2016 ... a leading global provider of clinical, commercial and ... organisations and TranScrip ( http://www.transcrip-partners.com ), a renowned ... product lifecycle, today announced the extension of their ...      (Logo: http://photos.prnewswire.com/prnh/20141208/720248 ) , ...
(Date:5/26/2016)... , May 26, 2016 Despite the ... value in this space. Today,s pre-market research on ActiveWallSt.com directs ... Health Inc. (NASDAQ: RDUS ), Cerus Corp. (NASDAQ: ... ARWR ), and Five Prime Therapeutics Inc. (NASDAQ: ... briefings at: http://www.activewallst.com/ On ...
(Date:5/26/2016)... San Diego, CA (PRWEB) , ... May 26, ... ... assay development and manufacturing company, today announced several positive developments that position the ... As a result of the transaction, Craig F. Kinghorn has been appointed ...
(Date:5/25/2016)... ... May 25, 2016 , ... Lajollacooks4u has become a rising hotspot for specialized ... of its top attractions. Fortune 500 companies, such as Illumina, Hewlett-Packard, Qualcomm and ... intimate team-building experience. , Each event kicks off with an olive oil and salt-tasting ...
Breaking Biology Technology:
(Date:4/28/2016)... , April 28, 2016 First quarter ... (139.9), up 966% compared with the first quarter of 2015 ... totaled SEK 589.1 M (loss: 18.8) and the operating margin was ... (loss: 0.32) Cash flow from operations was SEK 249.9 ... 2016 revenue guidance is unchanged, SEK 7,000-8,500 M. The ...
(Date:4/26/2016)... Research and Markets has announced ... 2016-2020"  report to their offering.  , ,     (Logo: ... analysts forecast the global multimodal biometrics market to ... period 2016-2020.  Multimodal biometrics is being ... the healthcare, BFSI, transportation, automotive, and government for ...
(Date:4/15/2016)... , April 15, 2016  A new ... make more accurate underwriting decisions in a fraction ... timely, competitively priced and high-value life insurance policies ... screenings. With Force Diagnostics, rapid testing ... lifestyle data readings (blood pressure, weight, pulse, BMI, ...
Breaking Biology News(10 mins):