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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

Decoherence of quantum superpositons through coupling to engineered reservoirs

Article Abstract:

The quantum mechanics theory applies to closed systems, where a single atom can exist simultaneously in a superposition of two different spatial locations. Real systems however, always interact with their environment and macroscopic quantum superpositions are not seen. Measurements of decoherence of superposed motional states of a single trapped atom are presented, revealing that the decoherence rate scales with the square of a quantity describing the amplitude of the superpositon state.

Author: Myatt, C.J., King, B.E., Turchette, Q.A., Sackett, C.A., Kielpinski, D., Itano, W.M., Monroe, C., Wineland, D.J.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000

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Experimental entanglement of four particles

Article Abstract:

It has been possible to realize a four-quantum-bit logic gate. This research involved implementing an entanglement technique proposed by K. Molmer and A. Sorensen to produce entangled states of two and four trapped ions. This technique can be understood by considering a pair of spin-half charged particles restricted together in a harmonic potential. The system developed through this research is relevant for the future development of quantum information technology. Such states could be used to instigate quantum error-detection schemes.

Author: Myatt, C.J., King, B.E., Turchette, Q.A., Sackett, C.A., Kielpinski, D., Itano, W.M., Monroe, C., Wineland, D.J., Langer, C., Meyer, V., Rowe, M.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
Ion exchange

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Realization of quantum error correction

Article Abstract:

The study experimentally demonstrates quantum error correction using three beryllium atomic-ion qubits confined to a linear, multi-zone trap. It concluded that this approach enables a quantum state to be maintained by means of repeated error correction, an important step towards scalable fault-tolerant quantum computation using trapped ions.

Author: Itano, W.M., Wineland, D.J., Knill, E., Langer, C., Leibfried, D., Britton, J., Chiaverni, J., Ozeri, R., Schaetz, T., Jost, J.D., Barrett, M.D., Blakestad, R.B.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
United States, Electronic computers, Electronic Computer Manufacturing, Science & research, Fault Tolerant Computer Systems, Fault tolerance (Computers), Fault tolerance, Quantum computing

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Subjects list: Research, Quantum theory, Quantum mechanics
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