| EPSRC Reference: |
EP/D500354/1 |
| Title: |
Continuous-variable entanglement, phase spaces and marginals of multipartite quantum systems |
| Principal Investigator: |
Braunstein, Professor SL |
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| Department: |
Computer Science |
| Organisation: |
University of York |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
26 September 2005 |
Ends: |
25 September 2006 |
Value (£): |
84,208
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| EPSRC Research Topic Classifications: |
| Algebra & Geometry |
Fundamentals of Computing |
| New & Emerging Comp. Paradigms |
Quantum Optics & Information |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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In the world of the very small, nothing quite makes sense. Small objects made up of electrons, photons or atoms, which obey the laws of quantum mechanics, present us with puzzles like the puzzle of fully describing an everyday three-dimensional object, given outlines of it seen from three different directions. We get outlines of a quantum object by making different measurements on the object, when we cannot make all the measurements simultaneously. Sometimes there is no way in which these outlines will fit together to give a single description of the object. This is a well-known peculiarity of quantum objects (pointed out by Einstein, Podolsky and Rosen, and by Bell) and forces us to use an unfamiliar mathematical description of such objects. In this description it is still possible to think about the different outlines of an object, and to ask if a set of outlines will fit together (but now, if the outlines do not fit together, we believe that an object with those outlines cannot exist). Investigating just which quantum outlines will fit together has only just started; we want to continue this investigation. This will enable us to devise tests to check whether small objects in the real world do actually have the kinds of properties that the mathematical theory requires, to find where they most depart from making sense according to our usual ideas, and to look for ways of using these departures from common sense in quantum computing and quantum communication.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.york.ac.uk |