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)...   BioLife Solutions , Inc. (NASDAQ: BLFS ), ... hypothermic storage and cryopreservation freeze media ... tissues  ("BioLife" or the "Company"), today announced that it will ... 2015 (the "Annual Meeting"). Because the expected date ...
(Date:12/24/2014)... Boston, MA (PRWEB) December 23, 2014 Earlier ... James L. Sherley, director of the Adult Stem Cell Technology ... overlooked and under appreciated unique property of adult tissue stem ... Misunderstood in the Past, Important for the Future,” embodied the ...
(Date:12/24/2014)... 23, 2014 According to Ross Selinger, President ... of ITRA Global, the national office market continues to be ... This is evidenced by the third quarter’s surprising 3.9% GDP, ... Low energy costs have held inflation down and the Fed ...
(Date:12/24/2014)... The report expects global cell isolation and ... provides a carefully analyzed data about the vital drivers, restraints, ... Copy of Report @ http://bit.ly/1yUxy0T , According to ... witnessing growth at an impressive CAGR during near future. It ...
Breaking Biology Technology:BioLife Solutions Sets Date for Annual Meeting of Stockholders 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 3Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 4ITRA Global Reports Long Island Is Out of Sync With The National Office Market 2ITRA Global Reports Long Island Is Out of Sync With The National Office Market 3The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 3
... Wis. - As law professors at major universities, Rebecca ... case perfectly clear: they are not calling for repeal of ... patent their inventions. They are advocating an adjustment that ... University of Michigan and Rai of Duke University ...
... - An agreement struck to accelerate the transformation of ... visions of a medical discovery triangle connecting Milwaukee, Madison, ... milestone in the drive to facilitate scientific collaboration and ... formally joined forces with WiSys Technology Foundation, Inc. ...
... Madison, Wis. - Quick quiz: Which Wisconsin institutions spend ... , ,Naming No. 1 is relatively easy: the University ... academic R&D centers in the United States. Second on the ... million), which ranks among the nation's top 100 medical research ...
Cached Biology Technology:Professors want to tweak, not overhaul, patent law 2Professors want to tweak, not overhaul, patent law 3WiSys to patent Marshfield Clinic discoveries 2Marshfield Clinic and UW combine to speed tech growth 2Marshfield Clinic and UW combine to speed tech growth 3Marshfield Clinic and UW combine to speed tech growth 4
(Date:1/22/2015)... ("Company") (BM&FBOVESPA: VLID3 ON), is pleased to inform its shareholders ... Washington,s Department of Licensing, in the United States, awarded ... for driver,s licenses and identification cards to its subsidiary, Valid ... start in January 2015, with enrollment and card production starting ...
(Date:1/22/2015)... MADISON, Wis. , Jan. 15, 2015  BellBrook ... for drug discovery, announced the launch of a ... of the company,s Transcreener UDP Assay, a high ... enzymes. The new assay will allow for sensitive ...
(Date:1/22/2015)... YORK , Jan. 21, 2015  Analyst Report Issued by ... Card Brands report showed that planet-wide, transactions at merchants on ... while the total number of credit, debit, and prepaid cards ... U.S. were victims of fraudulent card usage in 2012, and ...
Breaking Biology News(10 mins):Valid USA Signs Contract For Washington Driver's License Issuance 2BellBrook Labs Launches a High Throughput Screening Assay for Glycosyltransferases with TR-FRET Readout 2$4.80 Near Term Price Target with "Buy" given by CapRock Research for NXT-ID, Inc. (NASDAQ: NXTD) issued by Small Cap IR 2
... The Federation of American Societies for Experimental Biology ... Science Research Conference (SRC): Matricellular Proteins in Development, ... their surrounding extracellular matrix (ECM) are the basis ... tissue organization in all metazoan organisms. Structural ECM ...
... Federation of American Societies for Experimental Biology (FASEB) ... Research Conference (SRC): Hematologic Malignancies. The 2013 ... and unique scientific conference where basic and translational ... in detail in the premier meeting in the ...
... University published a paper in Nature , concluding that ... of Mendelian inheritance (the idea that all genes are inherited ... demonstrating genetic traits from older generations, which shouldn,t be possible ... on. At the time of publishing, the paper ...
Cached Biology News:FASEB SRC announces conference: Matricellular Proteins in Development, Health, and Disease 2Defying the laws of Mendelian inheritance 2
... Cellomics KineticScan™ Reader is Cellomics‘ ... Solutions for Cell-based Screening". The ... ability to do both temporal ... physiological processes, dynamic distribution and ...
... may be superior to transfection in some ... with PULSin you can study lethal proteins ... of proteins in cells. Likewise, delivery of ... traditional RNA interference experiments. ,With PULSin ...
... an automated instrument with a thin silicon ... using light or fluorescence microscopy. Biaxial strain ... fibroblast cells can be simulated by mechanical ... Y axis of our strain chamber. Strain ...
... ST-195 allows real-time observations of cell cultures ... has 64 different strain parameters in addition ... thin silicon strain chamber used by the ... fluorescence microscopy. ST-195 can be used with ...
Biology Products: