Deterministic quantum teleportation of atomic qubits

Abstract

Quantum teleportation1 provides a means to transport quantum information efficiently from one location to another, without the physical transfer of the associated quantum-information carrier. This is achieved by using the non-local correlations of previously distributed, entangled quantum bits (qubits). Teleportation is expected to play an integral role in quantum communication2 and quantum computation3. Previous experimental demonstrations have been implemented with optical systems that used both discrete and continuous variables4,5,6,7,8,9, and with liquid-state nuclear magnetic resonance10. Here we report unconditional teleportation5 of massive particle qubits using atomic (9Be+) ions confined in a segmented ion trap, which aids individual qubit addressing. We achieve an average fidelity of 78 per cent, which exceeds the fidelity of any protocol that does not use entanglement11. This demonstration is also important because it incorporates most of the techniques necessary for scalable quantum information processing in an ion-trap system12,13.

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

Figure 1: Schematic representation of the teleportation protocol.
Figure 2: Ramsey fringes demonstrating the teleportation protocol.

References

  1. 1

    Bennett, C. H. et al. Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels. Phys. Rev. Lett. 70, 1895–1899 (1993)

  2. 2

    Briegel, H.-J., Dür, W., Cirac, J. I. & Zoller, P. Quantum repeaters: The role of imperfect local operations in quantum communication. Phys. Rev. Lett. 81, 5932–5935 (1998)

  3. 3

    Gottesman, D. & Chuang, I. L. Demonstrating the viability of universal quantum computation using teleportation and single-qubit operations. Nature 402, 390–393 (1999)

  4. 4

    Bouwmeester, D. et al. Experimental quantum teleportation. Nature 390, 575–579 (1997)

  5. 5

    Furusawa, A. et al. Unconditional quantum teleportation. Science 282, 706–709 (1998)

  6. 6

    Boschi, D., Branca, S., De Martini, F., Hardy, L. & Popescu, S. Experimental realization of teleporting an unknown pure quantum state via dual classical and Einstein-Podolsky-Rosen channels. Phys. Rev. Lett. 80, 1121–1125 (1998)

  7. 7

    Kim, Y.-H., Kulik, S. P. & Shih, Y. Quantum teleportation of a polarization state with a complete Bell state measurement. Phys. Rev. Lett. 86, 1370–1373 (2001)

  8. 8

    Bowen, W. P. et al. Experimental investigation of continuous-variable quantum teleportation. Phys. Rev. A. 67, 032302 (2003)

  9. 9

    Zhang, T. C., Goh, K. W., Chou, C. W., Lodahl, P. & Kimble, H. J. Quantum teleportation of light beams. Phys. Rev. A 67, 033802 (2003)

  10. 10

    Nielsen, M. A., Knill, E. & Laflamme, R. Complete quantum teleportation using nuclear magnetic resonance. Nature 396, 52–55 (1998)

  11. 11

    Massar, M. & Popescu, S. Optimal extraction of information from finite quantum ensembles. Phys. Rev. Lett. 74, 1259–1263 (1995)

  12. 12

    Wineland, D. J. et al. Experimental issues in coherent quantum-state manipulation of trapped atomic ions. J. Res. Natl Inst. Stand. Technol. 103, 259–358 (2003)

  13. 13

    Kielpinski, D., Monroe, C. & Wineland, D. J. Architecture for a large-scale ion-trap quantum computer. Nature 417, 709–711 (2002)

  14. 14

    Nielsen, M. A. & Chuang, I. L Quantum Computation and Quantum Information (Cambridge Univ. Press, Cambridge, 2000)

  15. 15

    Rowe, M. A. et al. Transport of quantum states and separation of ions in a dual rf ion trap. Quant. Inf. Comp. 2, 257–271 (2002)

  16. 16

    Wineland, D. J. et al. Quantum information processing with trapped ions. Phil. Trans. R. Soc. Lond. A 361, 1349–1361 (2003)

  17. 17

    Barrett, M. D. et al. Sympathetic cooling of 9Be+ and 24Mg+ for quantum logic. Phys. Rev. A 68, 042302 (2003)

  18. 18

    Leibfried, D. et al. Experimental demonstration of a robust, high-fidelity geometric two ion-qubit phase gate. Nature 422, 412–415 (2003)

  19. 19

    Rowe, M. A. et al. Experimental violation of a Bell's inequality with efficient detection. Nature 409, 791–794 (2001)

  20. 20

    Riebe, M. et al. Deterministic quantum teleportation with atoms. Nature (this issue)

  21. 21

    King, B. E. et al. Cooling the collective motion of trapped ions to initialize a quantum register. Phys. Rev. Lett. 81, 1525–1528 (1998)

Download references

Acknowledgements

This work was supported by ARDA/NSA and NIST. We thank J. Bollinger and J. Martinis for helpful comments on the manuscript. T.S. acknowledges a Deutsche Forschungsgemeinschaft research grant. This paper is a contribution of the National Institute of Standards and Technology and is not subject to US copyright.

Author information

Correspondence to D. J. Wineland.

Ethics declarations

Competing interests

The authors declare that they have no competing financial interests.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Barrett, M., Chiaverini, J., Schaetz, T. et al. Deterministic quantum teleportation of atomic qubits. Nature 429, 737–739 (2004) doi:10.1038/nature02608

Download citation

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.