Navigation Links
Physicists at UC Santa Barbara make discovery in quantum mechanics
Date:9/23/2009

(Santa Barbara, Calif.) Physicists at UC Santa Barbara have made an important advance in quantum mechanics using a superconducting electrical circuit. The finding is reported in this week's issue of the journal Nature.

The researchers showed that they could detect the quantum correlations in the results of measurements of entangled quantum bits, using a superconducting electrical circuit. The correlations are stronger than can be obtained using classical (non-quantum mechanical) physics, and according to the physicists, this illustrates that the oddities of quantum mechanics clearly extend to macroscopic systems. The work is part of an ongoing collaboration between the UCSB laboratories of John Martinis and Andrew Cleland.

The results of measurements in quantum mechanics are intrinsically unpredictable, according to the theory of quantum mechanics, and yet still contain very strong correlations, in contradiction with classical physics. In particular, measurements of "entangled states," such as a pair of particles with opposite spins, allow stringent tests of the predicted discrepancy between quantum and classical physics, as described by the "Bell inequalities." Measuring such a discrepancy is known as a "Bell violation."

According to quantum theory, Bell violations should be detectable using "qubits," superconducting quantum bits, but measuring these violations is technologically challenging. Martinis, Cleland, and their colleagues have overcome these challenges, and report a clear violation of Bell's inequality with two entangled superconducting qubits. Thus, they have demonstrated that this macroscopic electrical circuit is a quantum system.

The measurement of a Bell violation in a superconducting circuit was recently stated to be the next primary challenge for the superconducting qubit community, according to Martinis.

Martinis said: "This experiment has met this challenge, achieved by performing a very d
'/>"/>

Contact: Gail Gallessich
gail.g@ia.ucsb.edu
805-893-7220
University of California - Santa Barbara
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Physicists pin down spin of surface atoms
2. Sheet of carbon atoms acts like a billiard table, physicists find
3. Sheet of carbon atoms acts like a billiard table, physicists find
4. Physicists discover gold can be magnetic on the nanoscale
5. Physicists discover how fundamental particles lose track of quantum mechanical properties
6. UM physicists show electrons can travel over 100 times faster in graphene than in silicon
7. Physicists saved from drowning in complexities of wetting theory
8. New unifying theory of lasers advanced by physicists
9. Discovery by UC Riverside physicists could enable development of faster computers
10. UBC physicists develop impossible technique to study and develop superconductors
11. Physicists tweak quantum force, reducing barrier to tiny devices
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/30/2014)... July 30, 2014 Adding to their ... weighing boat special – Buy 2 of any ... promotion will benefit lab technicians looking for durable and ... are ideal for multiple applications including weighing liquids, solid, ... of choices including diamond-shaped, hexagonal, square, aluminum weighing, and ...
(Date:7/30/2014)... (PRWEB) July 30, 2014 LayerBio, Inc., ... completion of its first round of seed financing from ... enable preliminary efforts to develop a novel sustained-release product ... of our investors and their commitment to this important ... LayerBio. "Ophthalmology is one of many areas in which ...
(Date:7/29/2014)... (PRWEB) July 30, 2014 “PharmaSphere: ... Equity and Venture Capital Funding” report provides in-depth ... the private equity and venture capital segments of ... are expected to have significant impact on the ... and globally. Furthermore, the report identifies regions of ...
(Date:7/29/2014)... 2014 The advanced optical methods and ... are driving a revolution in the neurosciences were the ... published by SPIE, the international society for optics ... the launch of the BRAIN Initiative in the United ... out a vision for and provide examples of the ...
Breaking Biology Technology:Weighing Boat Promotion Now Available at Pipette.com, Major Pipette Distributor 2Strategic Trends of Biotech Investment Industry (Private Equity and Venture Capital Funding) in New Report Available at MarketOptimizer.org 2Strategic Trends of Biotech Investment Industry (Private Equity and Venture Capital Funding) in New Report Available at MarketOptimizer.org 3Strategic Trends of Biotech Investment Industry (Private Equity and Venture Capital Funding) in New Report Available at MarketOptimizer.org 4SPIE Launches 'Neurophotonics' Journal with Special Section on BRAIN Initiative 2SPIE Launches 'Neurophotonics' Journal with Special Section on BRAIN Initiative 3SPIE Launches 'Neurophotonics' Journal with Special Section on BRAIN Initiative 4
... Solution ... U.S. Critical Care Crisis, BALTIMORE, May 20, 2008 ICU ... at hospitals using,the eICU(R) care delivery model, according to results released ... Multimedia News Release, go to:, http://www.prnewswire.com/mnr/visicu/33159/ , Data from more ...
... AMES, Iowa, May 20 Advanced Analytical Technologies,Inc. ... newest instrument platform,the DNA PROfiler(TM) system, at BIO ... the time to identify infections which could help,clinicians ... Dr. Steven J Lasky, CEO of AATI, states, ...
... Turtle Island Soup has launched a,new ... ingredients shown to have,important health benefits, including ... The new Souper Food soups are powered ... http://www.ganedenlabs.com/ourScience.html ), a probiotic that has been,shown ...
Cached Biology Technology:Video: Data From 185,000 ICU Admissions Show Significant Reductions in Mortality: 2Video: Data From 185,000 ICU Admissions Show Significant Reductions in Mortality: 3Video: Data From 185,000 ICU Admissions Show Significant Reductions in Mortality: 4Advanced Analytical Unveils New Instrument for Rapid Microbial Identification at BIO 2008 2Turtle Island Soup Gets 'Souped Up' with New Probiotic, GandenBC30 2Turtle Island Soup Gets 'Souped Up' with New Probiotic, GandenBC30 3
(Date:7/28/2014)... Food and Drug Administration (FDA) for other purposes can ... human cells, including those that cause Legionnaires, disease, brucellosis, ... mBio , the online open-access journal of the American ... non-antibiotic drugs that could one day help curb bacterial ... list inhibit the growth of at least three of ...
(Date:7/28/2014)... United States have a circulatory problem of the legs ... may even require surgery in serious cases. This disease ... turn, limb amputation. , At The University of Texas ... tested a non-surgical preventative treatment in a mouse model ... blood circulation. Their proof-of-concept study appears in the ...
(Date:7/28/2014)... that the effects of a commonly used anesthetic drug ... The study, published in this week,s issue of the ... at the University of California, San Diego and Weill ... concerns, arising from multiple studies on humans over the ... increase their susceptibility to long-term cognitive and behavioral deficits, ...
Breaking Biology News(10 mins):New route to identify drugs that can fight bacterial infections 2Scientists discover genetic switch that can prevent peripheral vascular disease in mice 2Study suggests disruptive effects of anesthesia on brain cell connections are temporary 2Study suggests disruptive effects of anesthesia on brain cell connections are temporary 3
... the lineage of primates, according to scientific gospel, social ... as food, territory and reproduction. , That may well ... groundbreaking study researchers from the University of Wisconsin-Madison have ... from basic motivations to be with one another. What's ...
... damaged by ultraviolet (UV) light. , Ohio State University ... to watch strands of DNA in the laboratory sustain damage ... common chemical reaction among a family of reactions on the ... this key reaction happens with astounding speed -- in less ...
... are creating a technology that will allow doctors and ... humans and animals and watch their bones move in ... , This high-resolution, high-speed imaging system will contribute ... injuries and help scientists understand the evolution of complex ...
Cached Biology News:In young mice, gregariousness seems to reside in the genes 2In young mice, gregariousness seems to reside in the genes 3Scientists see DNA get 'sunburned' for the first time 2Scientists see DNA get 'sunburned' for the first time 3Bones in motion: Brown scientists to create new 3-D X-ray system 2Bones in motion: Brown scientists to create new 3-D X-ray system 3
Nuclear/Cytosol Fractionation Kit Research Focus: other Storage Temperature: 4C Shipping Temperature: 4C...
Peptide-affinity Purified Polyclonal Antibody to MTR...
Polyclonal Antibody to AGAP1 / Centaurin, gamma 2...
Polyclonal Antibody to PRG3...
Biology Products: