W J Munro et al 2005 New J. Phys. 7 137 doi:10.1088/1367-2630/7/1/137
Weak nonlinearities: a new route to optical quantum computation
W J Munro1,2,3, K Nemoto1 and T P Spiller2
Show affiliationsQuantum information processing (QIP) offers the promise of being able to do things that we cannot do with conventional technology. Here we present a new route for distributed optical QIP, based on generalized quantum non-demolition measurements, providing a unified approach for quantum communication and computing. Interactions between photons are generated using weak nonlinearities and intense laser fields—the use of such fields provides for robust distribution of quantum information. Our approach only requires a practical set of resources, and it uses these very efficiently. Thus it promises to be extremely useful for the first quantum technologies, based on scarce resources. Furthermore, in the longer term this approach provides both options and scalability for efficient many-qubit QIP.
- PACS
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03.67.Lx Quantum computation architectures and implementations
- Subjects
- Dates
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Issue 1 (May 2005)
Received 9 May 2005
Published 27 May 2005
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Weak nonlinearities: a new route to optical quantum computation
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