Chen, J., Altepeter, J.B., Medic, M., Lee, K.F., Gokden, B., Hadfield, R.H. , Nam, S.W. and Kumar, P. (2008) Demonstration of a quantum controlled-NOT gate in the telecommunications band. Physical Review Letters, 100(13), p. 133603. (doi: 10.1103/PhysRevLett.100.133603)
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Abstract
We present the first quantum controlled-not (cnot) gate realized using a fiber-based indistinguishable photon-pair source in the 1.55 μm telecommunications band. Using this free-space cnot gate, all four Bell states are produced and fully characterized by performing quantum-state tomography, demonstrating the gate’s unambiguous entangling capability and high fidelity. Telecom-band operation makes this cnot gate particularly suitable for quantum-information-processing tasks that are at the interface of quantum communication and linear optical quantum computing.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Hadfield, Professor Robert |
| Authors: | Chen, J., Altepeter, J.B., Medic, M., Lee, K.F., Gokden, B., Hadfield, R.H., Nam, S.W., and Kumar, P. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| Published Online: | 07 April 2008 |
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