Navigation Links
U of T physicists squeeze light to quantum limit
Date:1/6/2009

together inside an optical fibre, to create a triphoton. "A strange feature of quantum physics is that when several identical photons are combined, as they are in optical fibres such as those used to carry the internet to our homes, they undergo an "identity crisis" and one can no longer tell what an individual photon is doing," Steinberg says. The authors then squeezed the triphotonic state to glean the quantum information that was encoded in the triphotons polarization. (Polarization is a property of light which is at the basis of 3D movies, glare-reducing sunglasses, and a coming wave of advanced technologies such as quantum cryptography.)

In all previous work, it was assumed that one could squeeze indefinitely, simply tolerating the growth of uncertainty in the uninteresting direction. "But the world of polarization, like the Earth, is not flat," says Steinberg.

"A state of polarization can be thought of as a small continent floating on a sphere. When we squeezed our triphoton continent, at first all proceeded as in earlier experiments. But when we squeezed sufficiently hard, the continent lengthened so much that it began to "wrap around" the surface of the sphere," he says.

"To take the metaphor further, all previous experiments were confined to such small areas that the sphere, like your home town, looked as though it was flat. This work needed to map the triphoton on a globe, which we represented on a sphere providing an intuitive and easily applicable visualization. In so doing, we showed for the first time that the spherical nature of polarization creates qualitatively different states and places a limit on how much squeezing is possible," says Steinberg.

"Creating this special combined state allows the limits to squeezing to be properly studied," says Rob Adamson. "For the first time, we have demonstrated a technique for generating any desired triphoton state and shown that t
'/>"/>

Contact: Kim Luke
kim.luke@utoronto.ca
416-978-4352
University of Toronto
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. McGill physicists find a new state of matter in a transistor
2. Physicists tweak quantum force, reducing barrier to tiny devices
3. UBC physicists develop impossible technique to study and develop superconductors
4. Discovery by UC Riverside physicists could enable development of faster computers
5. New unifying theory of lasers advanced by physicists
6. Physicists saved from drowning in complexities of wetting theory
7. UM physicists show electrons can travel over 100 times faster in graphene than in silicon
8. Physicists discover how fundamental particles lose track of quantum mechanical properties
9. Physicists discover gold can be magnetic on the nanoscale
10. Sheet of carbon atoms acts like a billiard table, physicists find
11. Sheet of carbon atoms acts like a billiard table, physicists find
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/24/2014)... , Dec. 23, 2014 Vermillion, ... focused on gynecologic disease, announced today that investors ... , Birchview Fund LLC and several Vermillion directors ... unregistered shares of Vermillion,s common stock and warrants ... in a private placement.  Under ...
(Date:12/22/2014)... 2014 The Center for Professional ... technical training across the life sciences industry, has partnered ... (SCDM) to provide the organization's members with discounted classroom ... to the more than 350 sessions across 80 course ... off when registering for a public course ...
(Date:12/22/2014)... MISSION VIEJO, Calif. , Dec. 22, 2014 /PRNewswire/ ... announce that CoPatient, an online medical bill review and ... newest offering in the FREE WellCard Savings discount health ... a medical bill that was more than they expected ... help members reduce health care costs, WellCard Savings is ...
(Date:12/19/2014)... MA (PRWEB) December 19, 2014 Charm ... MRLAFMQ test for the Detection of Aflatoxin M1 in ... to receive independent third party validation. The peer reviewed ... Unit of the Institute for Agricultural and Fisheries Research ... Group. , Aflatoxin B1, the most toxic aflatoxin ...
Breaking Biology Technology:Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2Charm Sciences Achieves Independent Validation of First 15 Minute Quantitative Screening Method for Aflatoxin M1 2
... call and webcast to begin after markets close at 2:00 p.m. PT ... ... Masimo Corporation,(Nasdaq: MASI ), the inventor of Pulse CO-Oximetry and,Measure-Through-Motion- ... the period ended,September 27, 2008 after the market closes on Monday, October ...
... Oct. 15 PURE Bioscience (Nasdaq:,PURE), creators of ... revenues for the fiscal year ended July 31, ... with $336,400 in the,prior fiscal year. The Company ... or $(0.24) per share, compared with a loss ...
... Agency Expanding Industry Connections, MOUNTAINSIDE, N.J., Oct. ... medical education company,today announced the hiring of Todd ... leverage his experience in medical education and,publishing as ... L&M, he,served as Manager of Publication Sales at ...
Cached Biology Technology:Masimo to Report Third Quarter 2008 Financial Results on October 27, 2008 2PURE Bioscience Reports Fourth Quarter and Year End Results 2PURE Bioscience Reports Fourth Quarter and Year End Results 3PURE Bioscience Reports Fourth Quarter and Year End Results 4PURE Bioscience Reports Fourth Quarter and Year End Results 5PURE Bioscience Reports Fourth Quarter and Year End Results 6PURE Bioscience Reports Fourth Quarter and Year End Results 7L&M Healthcare Communications LLC Expands Client Services With Executive Team Expansion 2
(Date:12/17/2014)... , Dec. 15, 2014 Research and Markets ... addition of the "Samsung Galaxy S5 - ... report to their offering. ... totally different sensing technology than the iPhone 5S, ... sensor in its product. The Galaxy ...
(Date:12/17/2014)... 16, 2014 Valencell, a leader in performance ... technology to industry leaders such as Intel, Jabra, Atlas, ... biometric wearable products. These products will be showcased at ... Las Vegas . "Our partners ... and robust – with the clinical data to back ...
(Date:12/15/2014)... Dec. 12, 2014 Research and Markets ... of the "Global Facial Recognition Market 2015-2019" ... http://photos.prnewswire.com/prnh/20130307/600769 Facial recognition ... individuals. Facial recognition system measures the overall facial ... edges, mouth, and the distance between eyes. Facial ...
Breaking Biology News(10 mins):Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3
... changes, might in fact be driven by a simple and ... range of specieshappen to share, according to new research. ... suggests that knowledge of a species, genes and how ... could be used to determine a predictable evolutionary pattern ...
... University of South Florida researchers have identified a genetic ... understanding and preventing a condition of aging that affects ... life. In a nine-year study that was a ... Research and the National Technical Institute for the Deaf ...
... 2012Targeted T-cells can seek out and destroy tumor cells ... that take advantage of this T-cell response are described ... a peer-reviewed journal from Mary Ann Liebert, Inc., publishers. ... Gene Therapy website at http://www.liebertpub.com/hum . ...
Cached Biology News:Far from random, evolution follows a predictable genetic pattern, Princeton researchers find 2Far from random, evolution follows a predictable genetic pattern, Princeton researchers find 3Far from random, evolution follows a predictable genetic pattern, Princeton researchers find 4Far from random, evolution follows a predictable genetic pattern, Princeton researchers find 5USF researchers identify gene mutation linked to old age hearing loss 2New anti-tumor cell therapy strategies are more effective 2
Anti-Mouse D011.10 TCR, Biotin (Clone KJ1-26) (mouse IgG2a)...
Mouse monoclonal [050-04] to C2 ( Abpromise for all tested applications). entrezGeneID: 717 SwissProtID: P06681...
C/EBPalpha Antibody Shipping Temperature: Cold Storage Temperature: -20C...
...
Biology Products: