Navigation Links
A gentle touch for better control, a quantum mechanical con, and milestone PRL papers
Date:5/4/2008

only knows about classical physics. Prior quantum cons have typically been vulnerable to simple countermeasures.

A pair of physicists at Tel-Aviv University in Israel came up with the quantum cheat by imagining two people betting on the location of a particle hidden among a set of boxes. In the game, a quantum mechanical con artist named Alice turns away as her classical victim, Bob, is allowed to look inside one of two boxes sitting on a table to see if there is a particle inside. He then closes the box and Alice guesses whether or not Bob found anything in the box he chose. If she guesses correctly, she wins Bob's money, if not, she pays him.

Classically, there is a 50% chance of Alice getting it right. If instead she's adept at quantum mechanics, and has a third box hidden away, she can ensure that she always knows what Bob found in his box. All she has to do is prepare the particle in a state that essentially places it in all three boxes simultaneously, through a phenomenon known as quantum superposition. In effect, there is an equal chance of the particle turning up in any one of the boxes. After Bob looks in one of the two boxes on the table, Alice measures the state of the particle in her hidden box. If she finds it empty, she knows Bob saw the particle in the box he opened. If she finds that the particle is in a superposition between two boxes, she knows that Bob opened the third box but didn't see anything inside. In either case, she always knows what Bob found, even though she has no way of knowing in advance where the particle will turn up or which box Bob chose to look in.

The authors of the paper admit that the current state of technology isn't good enough for a con artist to make money with quantum mechanics. But they believe that this is the first time anyone has shown that it's theoretically possible for someone like Alice to use quantum mechanics to win every time in a game that classical physics would only give her a fif
'/>"/>

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

Page: 1 2 3 4

Related biology news :

1. bioMETRX Incorporates OKIs Fingerprint Engine in its smartTOUCH Product Line
2. Moderate prenatal exposure to alcohol and stress in monkeys can cause touch sensitivity
3. bioMETRX to Introduce New smartTOUCH(TM) Products in 2008
4. Master Lock(R) smartTOUCH(TM) Garage Door Opener to be Featured on Hispanic Network Radio Weekend Show
5. bioMETRX, Inc. Announces Integration of AuthenTec Fingerprint Sensor in smartTOUCH(TM) Product Line
6. bioMETRX Announces Availability of New smartTOUCH(TM) Product
7. Shell Provides Consumers Gasoline Industrys First Pay By Touch Technology at the Pump
8. Hyperviscous fluids: Better treatment for severe blood loss
9. Standard chemo works better against metastatic BRCA1/2 breast cancer than against sporadic tumors
10. How and where fat is stored predicts disease risk better than weight
11. Continuous oral contraceptives better at easing pain, bleeding
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)... NEW YORK , Dec. 15, 2014  HITLAB SM ... Practices (GCP) audit to confirm its adherence to current ... enables HITLAB to conduct regulated smart device and smart ... safety and research quality. "HITLAB is determined ...
(Date:12/17/2014)... 2014  Automation is fundamentally transforming the travel experience and ... Over the past decade, ePassports, biometric readers, and secure ... through border control via eGates and Automated Passport Control ... and land borders across the globe. ...
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced the addition of the ... offering. One major trend emerging in ... Multimodal biometric systems utilize more than one characteristic of ...
Breaking Biology News(10 mins):HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... in Spanish . , In future, climate change ... in the concentration of CO 2 in the atmosphere. However, ... physiology of barley plants and increases its tolerance to salinity. This ... defended at the University of the Basque Country (UPV/EHU). Barley ...
... Early laboratory research has shown that resveratrol, a common ... most types of breast cancer, suggesting a potential role for ... substance found in red wine and red grapes. It is ... major drug stores. "Resveratrol has the ability to ...
... Men who develop breast cancer are often not treated ... treatment becomes difficult, new results show. Although most ... 1% of cases, Dr. Marina Garassino from the Orion ... organized by the European Society for Medical Oncology. ...
Cached Biology News:CO2 increase in the atmosphere augments tolerance of barley to salinity 2CO2 increase in the atmosphere augments tolerance of barley to salinity 3CO2 increase in the atmosphere augments tolerance of barley to salinity 4Researchers identify cancer preventive properties in common vitamin supplement 2Treatment delays result in poor outcomes for men with breast cancer 2
(Date:12/24/2014)... , Dec. 24, 2014 PlasmaTech Biopharmaceuticals, Inc. (NASDAQ: PTBI, ... announced the closing of an underwritten public offering of 3,500,000 ... an aggregate 3,500,000 shares of common stock, at an offering ... warrants have a per share exercise price of $5.00, are ...
(Date:12/24/2014)... “Preparative & Process Chromatography Market by Instrument ... Buffers, Valves, Guages, Seals), Accessories, Services, End User ... 2019” provides a detailed overview of the major ... strategies impacting the preparative and process chromatography market ...
(Date:12/24/2014)... SoundConnect’s 2015 next generation ... communication technology, provide continued education and inform users ... demonstrates online communication features and benefits; empowering users ... innovative and powerful tools. , According to SoundConnect’s ...
(Date:12/24/2014)... Texas (PRWEB) December 23, 2014 ... such as its definition, classification, application and industry ... process, and product cost structure. Production is separated ... covers upstream raw materials, equipment, downstream client survey, ...
Breaking Biology Technology:PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2
... Inc. (Nasdaq:,MITI), a biopharmaceutical company focusing on the ... and autoimmune,diseases, today announced that Dr. Christian Itin, ... part of a panel discussion titled,"Delivering On The ... 2007,RBC Capital Markets Healthcare Conference in New York, ...
... Dec. 5 Nastech Pharmaceutical,Company Inc. (Nasdaq: NSTK ... study with an undisclosed global leader in the production ... Factor IX protein,which is currently administered by injection to ... "We look forward to working with our new global ...
... RICHMOND, Calif., Dec. 4 Sangamo BioSciences,Inc. (Nasdaq: ... the,financial community on its latest developments in several of ... annual,Investor and Analyst Briefing that will be held from ... The presentation will be webcast live and may ...
Cached Biology Technology:Micromet to Present at the 2007 RBC Capital Markets Healthcare Conference on December 12, 2007 2Nastech Enters Into Feasibility Study to Develop a Non-Injectable Dosage Form of Factor IX to Control Bleeding 2Sangamo BioSciences to Webcast Presentations at Investor and Analyst Briefing 2
... Corning single use spatulas have been ... samples. They are for those interested in ... reusable spatulas. Each spatula is individually packaged, ... CLS number is a new product number, ...
... The LV Series offers high performance ... 14, 17, 23, and 34 frame sizes. ... perfect for life science applications, including medical ... other miniature automation systems., Meets a ...
... kit for a single fragment based screening project: , ... , 96 shape-diverse mixtures of 4 (5 ... files for structure refinement , Individual compounds ... are at ca. 50 mM. Supplied in 5 96-well trays. ...
... the proven features of the pET, BacVector ... all of the benefits and versatility of ... The pTriEx vectors have been extensively tested ... all three expression systems. In each case, ...
Biology Products: